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1. (Co-)pyrolytic performances and by-products of textile dyeing sludge and spent mushroom substrate

Author:
Jianli Huang; Jingyong Liu; Kenlin Chang; Musa Buyukada; Fatih Evrendilek
Source:
Journal of cleaner production 2020 v.261 pp. 121195
ISSN:
0959-6526
Subject:
alkanes; aromatic compounds; biofuels; byproducts; catalytic cracking; dyeing; fabrics; inorganic matter; melting; nitrogen; nitrogen oxides; pyrolysis; sludge; spent mushroom compost; sulfates; sulfides; sulfur; temperature; thermal properties
Abstract:
... The (co-)pyrolysis of textile dyeing sludge and spent mushroom substrate was conducted to characterize their thermal behaviors and by-products. The devolatilization of textile dyeing sludge mainly occurred between 150 and 500 °C, while the decomposition of inorganic matter as well as the secondary cracking of coke and tar happened between 500 and 1000 °C. The addition of spent mushroom substrate i ...
DOI:
10.1016/j.jclepro.2020.121195

2. (S)-2,3-Dihydrofarnesoic Acid, a New Component in Cephalic Glands of Male European Beewolves Philanthus triangulum

Author:
Thomas Schmitt; Erhard Strohm; Gudrun Herzner; Carlo Bicchi; Gerhard Krammer; Frank Heckel; Peter Schreier
Source:
Journal of chemical ecology 2003 v.29 no.11 pp. 2469-2479
ISSN:
0098-0331
Subject:
Philanthus triangulum; Sphecidae; alkanes; alkenes; chemical composition; females; gas chromatography; males; odors; pheromones
Abstract:
... The chemical composition and functional significance of pheromones of solitary Hymenoptera is much less well known compared to social species. Males of the genus Philanthus (Sphecidae) are territorial and scent mark their territories to attract females. Because of inconsistent results of earlier studies, we reanalyzed the content of the cephalic glands of male European beewolves, Philanthus triang ...
DOI:
10.1023/A:1026305901049
PubMed:
14682528

3. 1,7-Diazaspiro[5.5]undecane – A Neglected Heterocycle

Author:
Cordes Jens; Murray Philip R. D.; White Andrew J. P.; Barrett Anthony G. M.
Source:
Organic letters 2013 v.15 no.19 pp. 4992-4995
ISSN:
1523-7052
Subject:
Lewis acids; alkanes; catalytic activity; chemical structure; condensation reactions; copper; decarboxylation; ligands; organic halogen compounds; ruthenium
Abstract:
... A convenient and simple three step synthesis of 1,7-diazaspiro[5.5]undecane via Claisen condensation and acid catalyzed decarboxylation and spirocyclization of N-Boc-δ-valerolactam is described. Reactions of this spiroaminal with electrophiles including alkyl halides, alkane dihalides, acid chlorides, and sulfonyl chlorides gave either spirocyclic adducts or tetrahydropyridine derivatives. Additio ...
DOI:
10.1021/ol402301g

4. 1-substituted cyclopropenes: effective blocking agents for ethylene action in plants

Author:
Sisler, E.C.; Alwan, T.; Goren, R.; Serek, M.; Apelbaum, A.
Source:
Plant growth regulation 2003 v.40 no.3 pp. 223-228
ISSN:
0167-6903
Subject:
Musa paradisiaca; chemical concentration; plantains (fruit); antagonists; ethylene production; alkanes; cyclopropenoic acid; receptors; bananas; chemical structure
Abstract:
... A series of 1-alkane substituted cyclopropenes has been prepared and tested as ethylene antagonists using banana fruits as an assay system. 1-Methyl-, 1-ethyl-, 1-propyl-, 1-butyl-, 1-pentyl-, 1-hexyl-, 1-heptyl-, 1-octyl-, 1-nonyl-, and 1-decylcyclopropene were all very active compounds. 1-Methylcyclopropene protected bananas from ethylene with a minimum concentration of 0.7 nl.l-1 after a 24 h e ...

5. A 100-year record of changes in organic matter characteristics and productivity in Lake Bhimtal in the Kumaon Himalaya, NW India

Author:
Preetam Choudhary; Joyanto Routh; Govind J. Chakrapani
Source:
Journal of paleolimnology 2013 v.49 no.2 pp. 129-143
ISSN:
0921-2728
Subject:
sediments; carbon dioxide; phytoplankton; sulfur; nitrogen content; lakes; organic matter; biomarkers; sewage; watersheds; carbon; alkanes; burning; stable isotopes; fossil fuels; pigments; India
Abstract:
... Sediment variables total organic carbon (TOC), total nitrogen (TN), total sulfur (TS), as well as their accumulation rates and atomic ratios (C/N and C/S), were studied along with stable isotopes (δ¹³C, δ¹⁵N, and δ³⁴S), and specific biomarkers (n-alkanes and pigments) in a 35-cm-long sediment core from Lake Bhimtal, NW India. The average sedimentation rate is 3.6 mm year⁻¹, and the core represents ...
DOI:
10.1007/s10933-012-9647-9

6. 110th Anniversary: Mixed Matrix Membranes with Fillers of Intrinsic Nanopores for Gas Separation

Author:
Yanan Wang; Xiaoyao Wang; Jingyuan Guan; Leixin Yang; Yanxiong Ren; Nayab Nasir; Hong Wu; Zan Chen; Zhongyi Jiang
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.19 pp. 7706-7724
ISSN:
1520-5045
Subject:
alkanes; alkenes; carbon dioxide; coordination polymers; nanopores; zeolites
Abstract:
... Mixed matrix membranes (MMMs), which are fabricated by incorporating dispersed fillers into a continuous polymeric matrix, have been broadly utilized in gas separation due to their unique hierarchical structures and enhanced separation performance. Fillers of intrinsic nanopores (FINs) have drawn considerable attention because they not only can provide additional molecular transport channels but a ...
DOI:
10.1021/acs.iecr.9b01568

7. 110th Anniversary: Reversible Solubilization of Polar Polymers and Polymeric Catalysts in Nonpolar Solvents

Author:
Ying-Hua Fu; Camila Perales; Todd Eliason; David E. Bergbreiter
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.31 pp. 14579-14587
ISSN:
1520-5045
Subject:
alkanes; catalysts; hydrogen bonding; hydrogenation; liquids; moieties; molecular weight; oleic acid; polymers; process design; rhodium; solubility; solubilization; solvents; toluene
Abstract:
... Polar polymers like poly(N-isopropylacrylamide) are insoluble in nonpolar solvents. This work shows how hydrogen-bond solubilization can be used to generate chemically reversible responsive solubility of a polar polymer like PNIPAM in nonpolar solvents. This was accomplished by adding hydrogen-bonding carboxylic acids like acetic, pentanoic, octanoic, and oleic acids to a suspension of PNIPAM in s ...
DOI:
10.1021/acs.iecr.9b02373

8. 13C-dating, the first method to calculate the relative age of molecular substance homologues in soil

Author:
Eric Lichtfouse
Source:
Environmental chemistry letters 2012 v.10 no.1 pp. 97-103
ISSN:
1610-3653
Subject:
alkanes; carbon; carbon dioxide; carbon sequestration; carbon sinks; climate; corn; drugs; encapsulation; food science; isotopes; medicine; nutrients; organic matter; particle size; pollutants; soil
Abstract:
... This article reports the design of 13C-dating, the first method to calculate the relative age of molecular substance homologues occurring in fractions from the same soil sample. Soil is a major carbon pool impacting modern climate by CO2 release and uptake. Molecular substances that sequester carbon in soils are poorly known due to the absence of methods to study molecular-level C dynamics over ag ...
DOI:
10.1007/s10311-011-0334-2

9. 14C analysis of aliphatic hydrocarbon fractions from the hypersaline Lake Tyrrell, southeast Australia

Author:
P. Sargent Bray; Jochen J. Brocks; Simon C. George
Source:
Organic geochemistry 2014 v.73 pp. 29-34
ISSN:
0146-6380
Subject:
alkanes; biomarkers; organic carbon; playas; polar compounds; radiocarbon dating; radionuclides; salt lakes; sediments; stable isotopes; Australia
Abstract:
... Conventional biomarker studies typically interpret the distribution, structure and stable isotopic (e.g. ¹³C, D) composition of sedimentary hydrocarbons and polar compounds. However, compound and compound class specific ¹⁴C analysis (CSRA) is becoming increasingly relevant for characterising millennial scale residence and mobilisation of sedimentary organic carbon (OC). Here, the ¹⁴C content of th ...
DOI:
10.1016/j.orggeochem.2014.05.005

10. A 15ka lake water δD record from Genggahai Lake, northeastern Tibetan Plateau, and its paleoclimatic significance

Author:
Zhiguo Rao; Mingrui Qiang; Guodong Jia; Yunxia Li; Dan Dan; Fahu Chen
Source:
Organic geochemistry 2016 v.97 pp. 5-16
ISSN:
0146-6380
Subject:
alkanes; aquatic plants; evaporation; hydrogen; lakes; monsoon season; oxygen; rain; sediments; China
Abstract:
... The mid-chain and long chain n-alkanes in sediments of Genggahai Lake, on the northeastern Tibetan Plateau, have been assigned as being predominantly from aquatic plants. Thus, at the lake, compound specific hydrogen isotopic data for mid- and long chain n-alkanes (δDn-alkanes) are indicators of the variation in lake water δD (δDLW). Genggahai δDLW is determined by the local meteoric water δD (δDM ...
DOI:
10.1016/j.orggeochem.2016.03.007

11. A 1700-year n-alkanes hydrogen isotope record of moisture changes in sediments from Lake Sugan in the Qaidam Basin, northeastern Tibetan Plateau

Author:
Zheng Wang; Weiguo Liu; Zhonghui Liu; Huanye Wang; Yuxin He; Fan Zhang
Source:
Holocene v.23 no.9 pp. 1350-1354
ISSN:
1477-0911
Subject:
alkanes; basins; drought; grasses; humid zones; hydrogen; isotopes; lakes; sediments; shrubs; vegetation types; China
Abstract:
... We present a hydrogen isotopic record of long-chain n-alkanes in Lake Sugan to reconstruct regional moisture changes in the last 1700 years at a sampling resolution of 25 years. The δD values decreased by over 30‰ from the ‘Medieval Warm Period’ (MWP; c. ad 600–1500) to the ‘Little Ice Age’ (LIA; c. ad 1500–1850), and indicated that the moisture pattern included a relatively humid climate before t ...
DOI:
10.1177/0959683613486941

12. An 18th century medication “Mumia vera aegyptica” – Fake or authentic?

Author:
Barbara M. Scholz-Böttcher; Arie Nissenbaum; Jürgen Rullkötter
Source:
Organic geochemistry 2013 v.65 no. pp. 1-18
ISSN:
0146-6380
Subject:
alkanes; bandages; beeswax; bitumen; cannibalism; conifers; death; drug therapy; drugs; fatty acids; gas chromatography; humans; ingredients; mass spectrometry; medicine; plant fats and oils; sebum; trade; triterpenoids; turpentine; wax esters; wood fibers; Egypt
Abstract:
... The drug “mumia vera” has a long tradition in ancient medicine. It was considered an omnipotent panacea for a broad spectrum of diseases based on virtue associated with asphalt and other bituminous substances combined with the belief in the magic healing power of death. This made it a precious ingredient of medication and it represents a particular facet of medicinal cannibalism. “Mumia” was a com ...
DOI:
10.1016/j.orggeochem.2013.09.011

13. 1D-2D-3D Transformation Synthesis of Hierarchical Metal–Organic Framework Adsorbent for Multicomponent Alkane Separation

Author:
Wee Lik H.; Meledina Maria; Turner Stuart; Van Tendeloo Gustaaf; Zhang Kang; Rodriguez-Albelo L. Marleny; Masala Alessio; Bordiga Silvia; Jiang Jianwen; Navarro Jorge A. R.; Kirschhock Christine E. A.; Martens Johan A.
Source:
Journal of the American Chemical Society 2017 v.139 no.2 pp. 819-828
ISSN:
1520-5126
Subject:
adsorbents; adsorption; alkanes; copper; energy; enthalpy; entropy; porous media
Abstract:
... A new hierarchical MOF consisting of Cu(II) centers connected by benzene-tricarboxylates (BTC) is prepared by thermoinduced solid transformation of a dense CuBTC precursor phase. The mechanism of the material formation has been thoroughly elucidated and revealed a transformation of a ribbon-like 1D building unit into 2D layers and finally a 3D network. The new phase contains excess copper, charge ...
DOI:
10.1021/jacs.6b10768

14. 1H and 13C NMR Analysis of Gas Turbine Fuels As Applied to the Advanced Distillation Curve Method

Author:
Burger Jessica L.; Widegren Jason A.; Lovestead Tara M.; Bruno Thomas J.
Source:
Energy & Fuels 2015 v.29 no.8 pp. 4874-4885
ISSN:
1520-5029
Subject:
alkanes; aromatic compounds; distillation; fuels; gas chromatography-mass spectrometry; models; nuclear magnetic resonance spectroscopy; stable isotopes
Abstract:
... The analysis of gas turbine fuels by ¹H and ¹³C nuclear magnetic resonance (NMR) spectroscopy as applied to the composition-explicit advanced distillation curve method is reported. To demonstrate the general applicability for such fuels, eight independent fuel samples were characterized: one sample of JP-5, one sample of JP-8, and six samples of Jet-A. Distillate fractions were obtained for each f ...
DOI:
10.1021/acs.energyfuels.5b01035

15. 2-O-Methylated β-Cyclodextrin as an Effective Building Block to Construct Supramolecular Assemblies with Various Morphologies and Molecular Arrangements

Author:
Justine M. Kalaw; Hajime Shigemitsu; Toshiyuki Kida
Source:
Langmuir 2022 v.38 no.27 pp. 8407-8415
ISSN:
1520-5827
Subject:
alkanes; carbonates; evaporation; graphene; methanol; organogels; polyethylene terephthalates; solvents
Abstract:
... The preparation of supramolecular cyclodextrin (CD) assemblies and control of their assembly mode through guest inclusion in CD cavities have been actively studied. Contrarily, there are limited reports on the control of the assembly mode of guest-free CD molecules by external stimuli. Herein, we report the use of 2-O-methylated β-cyclodextrin (2-Me-β-CD) as an effective building block in fabricat ...
DOI:
10.1021/acs.langmuir.2c00980

16. A 220 ka palaeoenvironmental reconstruction of the Fuentillejo maar lake record (Central Spain) using biomarker analysis

Author:
José E. Ortiz; Laura Moreno; Trinidad Torres; Juana Vegas; Blanca Ruiz-Zapata; Ángel García-Cortés; Luis Galán; Alfredo Pérez-González
Source:
Organic geochemistry 2013 v.55 no. pp. 85-97
ISSN:
0146-6380
Subject:
macrophytes; grasses; sulfur; solar radiation; lakes; organic matter; biomarkers; evolution; trees; alkanes; latitude; spectral analysis; vegetation; paleoclimatology; Antarctica; Iberian Peninsula; Greenland; Spain
Abstract:
... The sedimentary record of the volcanic lake known as the Fuentillejo maar (central Spain) offers the opportunity to determine the palaeoenvironmental evolution of the central-southern part of the Iberian Peninsula during the Middle and Upper Pleistocene. A total of 439 samples from the upper 88m of a ca. 142m long core (spanning the last ca. 355ka) were examined. The interval corresponds to the la ...
DOI:
10.1016/j.orggeochem.2012.11.012

17. 2D autocovariance function for comprehensive analysis of two-way GC–MS data matrix: Application to environmental samples

Author:
Maria Chiara Pietrogrande; Dimitri Bacco; Nicola Marchetti; Mattia Mercuriali; Gaetano Zanghirati
Source:
Talanta 2011 v.83 no.4 pp. 1225-1232
ISSN:
0039-9140
Subject:
acids; aerosols; alkanes; data collection; gas chromatography-mass spectrometry; ions; tracer techniques
Abstract:
... This paper describes a signal processing method for comprehensive analysis of the large data set generated by hyphenated GC–MS technique. It is based on the study of the 2D autocovariance function (2D-EACVF) computed on the raw GC–MS data matrix, extending the procedure previously developed for 1D to 2D signals. It appears specifically promising for GC–MS investigation, in particular to single out ...
DOI:
10.1016/j.talanta.2010.07.056

18. 2H-enrichment of cellulose and n-alkanes in heterotrophic plants

Author:
M.-A. Cormier; R. A. Werner; M. C. Leuenberger; A. Kahmen
Source:
Oecologia 2019 v.189 no.2 pp. 365-373
ISSN:
0029-8549
Subject:
NADP (coenzyme); alkanes; biosynthesis; carboxylic acids; cellulose; deuterium; isotope fractionation; leaves; lipids; recycling; stable isotopes
Abstract:
... Hydrogen (H) isotopes of plant organic compounds are rarely employed in ecological studies. If so, these values are interpreted as being indicative of the plant source and/or leaf water. Recent observations suggest, however, that variations in hydrogen isotope fractionation that occur during the biosynthesis of plant compounds (²H-εbᵢₒ) imprint valuable metabolic information into the hydrogen isot ...
DOI:
10.1007/s00442-019-04338-8

19. 3D Chiral Nanoporous Metal–Organic Framework for Chromatographic Separation in GC

Author:
Sheng-ming Xie; Xin-huan Zhang; Bang-jin Wang; Mei Zhang; Jun-hui Zhang; Li-ming Yuan
Source:
Chromatographia 2014 v.77 no.19-20 pp. 1359-1365
ISSN:
0009-5893
Subject:
alcohols; alkanes; cadmium; citronellal; gas chromatography; isomers; nanotubes; thermal stability
Abstract:
... Metal–organic frameworks (MOFs) have received great attention as stationary phases in chromatographic separation technology because of their unusual properties such as high surface areas, fascinating structures, and excellent chemical and thermal stability. A chiral MOF, [(CH₃)₂NH₂][Cd(bpdc)₁.₅]·2DMA, possesses a unique chiral nanotube motif built from the covalent linkage of homochiral nanotubes ...
DOI:
10.1007/s10337-014-2719-4

20. 3D Nanoporous FeAl-KIT-5 with a cage type pore structure: a highly efficient and stable catalyst for hydroarylation of styrene and arylacetylenes

Author:
Shaji Varghese; Samuthira Nagarajan; Mercy R. Benzigar; Ajayan Mano; Zeid A. ALOthman; George Allen Gnana Raj; Ajayan Vinu
Source:
Tetrahedron letters 2012 v.53 no.12 pp. 1485-1489
ISSN:
0040-4039
Subject:
alkanes; alkenes; catalysts; chemical reactions; chemical structure; styrene; surface area
Abstract:
... A novel bimetallic nanoporous FeAl-KIT-5 catalyst with a cage type porous structure and a high surface area has been prepared for the hydroarylation of styrene and arylacetylenes to afford 1,1-diarylalkanes and 1,1-diarylalkenes, respectively. The catalyst was found to be highly active, and selective, affording a high yield of substituted alkanes and alkenes. The catalyst also showed much higher a ...
DOI:
10.1016/j.tetlet.2012.01.040

21. 5-HT3 receptor blocking activity of arylalkanes isolated from the rhizome of Zingiber officinale

Author:
Abdel-Aziz, H.; Nahrstedt, A.; Petereit, F.; Windeck, T.; Ploch, M.; Verspohl, E.J.
Source:
Planta medica 2005 v.71 no.7 pp. 609-616
ISSN:
0032-0943
Subject:
Zingiber officinale; ginger; rhizomes; plant extracts; phytochemicals; alkanes; mice; cultured cells; receptors; antagonists
DOI:
10.1055/s-2005-871265
PubMed:
16041645

22. 6:2 Fluorotelomer alcohol (6:2 FTOH) biodegradation by multiple microbial species under different physiological conditions

Author:
Myung Hee Kim; Ning Wang; Kung Hui Chu
Source:
Applied microbiology and biotechnology 2014 v.98 no.4 pp. 1831-1840
ISSN:
0175-7598
Subject:
Mycobacterium vaccae; Pseudomonas butanovora; Pseudomonas fluorescens; Pseudomonas oleovorans; alcohols; alkanes; bacteria; biodegradation; energy
Abstract:
... Factors affecting microbial aerobic biodegradation of 6:2 fluorotelomer alcohol [6:2 FTOH, F(CF₂)₆CH₂CH₂OH] were investigated using three alkane-degrading bacteria (Mycobacterium vaccae JOB5, Pseudomonas oleovorans, and Pseudomonas butanovora) and one fluoroacetate-degrading bacterium (Pseudomonas fluorescens DSM 8341). In the presence of formate (an external reducing energy source), P. fluorescen ...
DOI:
10.1007/s00253-013-5131-3
PubMed:
23907259

23. 9-(Diphenylphosphino)anthracene-based phosphapalladacycle catalyzed conjugate addition of arylboronic acids to electron-deficient alkenes

Author:
Minori Shimizu; Tetsuya Yamamoto
Source:
Tetrahedron letters 2020 v.61 no.35 pp. 152257
ISSN:
0040-4039
Subject:
acids; alkanes; alkenes; catalytic activity; esters; ketones; nitroalkenes
Abstract:
... 9-(Diphenylphosphino)anthracene-based phosphapalladacycle catalyzed conjugate addition of arylboronic acids to electron-deficient alkenes such asα,β-unsaturated ketones, esters, nitrile and nitroalkenes gave corresponding β-arylated alkanes in good yields and achieved TON up to 700. ...
DOI:
10.1016/j.tetlet.2020.152257

24. AF2400/polyketone composite organic solvent reverse osmosis membrane for organic liquid separation

Author:
Cuijing Liu; Liang Cheng; Takuji Shintani; Hideto Matsuyama
Source:
Journal of membrane science 2021 v.628 pp. 119270
ISSN:
0376-7388
Subject:
alkanes; energy efficiency; ethanol; feed composition; filtration; liquids; models; molecular weight; permeability; polytetrafluoroethylene; reverse osmosis; solvents; toluene; transportation
Abstract:
... Organic liquid separation is frequently encountered in chemically relevant industries. Herein, an organic solvent reverse osmosis (OSRO) membrane fabricated by spin coating a Teflon polymer, AF2400, onto a solvent-resistant polyketone support is proposed for organic liquid separation. Nonpolar AF2400 promotes the permeation of nonpolar liquids while inhibiting the transportation of polar liquids, ...
DOI:
10.1016/j.memsci.2021.119270

25. ALGLIQOL: A two stage integrated process towards synthesis of renewable transportation fuel via catalytic hydrothermal liquefaction of lipid enriched microalgae biomass and distillation

Author:
Gargi Goswami; Ratan Kumar; Ankan Sinha; Boudhnath Birazee; Babul Chandra Dutta; Sanjay Bhutani; Debasish Das
Source:
Energy conversion and management 2022 v.263 pp. 115696
ISSN:
0196-8904
Subject:
administrative management; alkanes; aromatic compounds; biodiesel; biomass; catalysts; diesel fuel; distillation; energy conversion; feedstocks; formic acid; gasoline; hydrothermal liquefaction; lipids; liquids; microalgae; oils; temperature; viscosity
Abstract:
... Present study demonstrates a two-stage integrated process for production of hydrocarbon oil designated as ALGLIQOL, with potential to be utilized as liquid transportation fuel. Stage-I involves in-situ catalytic hydrothermal liquefaction (HTL) of microalgae biomass to produce biocrude oil and stage-II involves distillation of biocrude to hydrocarbon oil. A strategic attempt has been implemented to ...
DOI:
10.1016/j.enconman.2022.115696

26. AMBER-ii: New Combining Rules and Force Field for Perfluoroalkanes

Author:
Nikitin Alexei; Milchevskiy Yury; Lyubartsev Alexander
Source:
Journal of physical chemistry 2015 v.119 no.46 pp. 14563-14573
ISSN:
1520-5207
Subject:
alkanes; fluorine; hydrogen; mechanics; noble gases; physical chemistry
Abstract:
... A molecular mechanics force field of the AMBER/OPLS family for perfluoroalkanes, noble gases, and their mixtures with alkanes has been proposed. We had to abandon the traditional Lorentz–Berthelot combining rules for the Lennard-Jones potential to be able to uniformly describe these substance classes and their mixtures. Instead, the Waldman-Hagler rules developed for noble gases were used for all ...
DOI:
10.1021/acs.jpcb.5b07233

27. AOPs-based remediation of petroleum hydrocarbons-contaminated soils: Efficiency, influencing factors and environmental impacts

Author:
Tong Zhang; Yuanyuan Liu; Shan Zhong; Lishan Zhang
Source:
Chemosphere 2020 v.246 pp. 125726
ISSN:
0045-6535
Subject:
alkanes; asphaltenes; catalytic activity; cement; cost effectiveness; cyclodextrins; environmental impact; free radicals; glucose; oxidation; petroleum; polluted soils; remediation; resins; soil organic matter; soil pollution; transition elements
Abstract:
... Petroleum hydrocarbons are a class of anthropogenic compounds including alkanes, aromatic hydrocarbons, resins, asphaltenes and other organic matters, and soil pollution caused by petroleum hydrocarbons has drawn increasing interest in recent years. Multiple advanced oxidation processes (AOPs) are emerging to remediate petroleum hydrocarbons-contaminated soils, while very few studies have focused ...
DOI:
10.1016/j.chemosphere.2019.125726

28. ATR FTIR Spectroscopic Study on Insect Body Surface Lipids Rich in Methylene-Interrupted Diene

Author:
Fumitoshi Kaneko; Chihiro Katagiri; Gen Sazaki; Ken Nagashima
Source:
Journal of physical chemistry 2018 v.122 no.51 pp. 12322-12330
ISSN:
1520-5207
Subject:
Fourier transform infrared spectroscopy; Orthoptera; Periplaneta americana; alkanes; chemical structure; insects; lipid content; lipids; liquids; males; physicochemical properties; sampling; spectral analysis; temperature; wings
Abstract:
... To protect themselves, insects cover their bodies with what is called cuticular lipid. The cuticular lipid of an American cockroach has a unique lipid content; the most abundant is a cis-alkadiene, cis,cis-6,9-heptacosadiene, amounting to about 70%, which is followed by a branched alkane 3-methylpentacosane. In order to clarify the structural features of the unique lipid composition below the crit ...
DOI:
10.1021/acs.jpcb.8b10026

29. Ab Initio Crystallization of Alkanes: Structure and Kinetics of Nuclei Formation

Author:
Zerze Hasan; Mittal Jeetain; McHugh Anthony J.
Source:
Macromolecules 2013 v.46 no.22 pp. 9151-9157
ISSN:
1520-5835
Subject:
alkanes; crystallization; molecular dynamics; molecular weight; polyethylene; simulation models; supercooling
Abstract:
... Molecular dynamics simulations of the crystallization of eicosane have been carried out as an example of a low molecular weight n-alkane system and for a high molecular weight alkane as an analogue of a semicrystalline polyethylene. An alternative method for determining crystal domains and growing nuclei has been developed based on the eicosane system behavior. In the former case, density and crys ...
DOI:
10.1021/ma401836b

30. Ab Initio Simulations Reveal that Reaction Dynamics Strongly Affect Product Selectivity for the Cracking of Alkanes over H-MFI

Author:
Zimmerman Paul M.; Tranca Diana C.; Gomes Joseph; Lambrecht Daniel S.; Head-Gordon Martin; Bell Alexis T.
Source:
Journal of the American Chemical Society 2012 v.134 no.47 pp. 19468-19476
ISSN:
1520-5126
Subject:
alkanes; catalytic activity; cracking; energy; gases; quantum mechanics; temperature; zeolites
Abstract:
... Product selectivity of alkane cracking catalysis in the H-MFI zeolite is investigated using both static and dynamic first-principles quantum mechanics/molecular mechanics simulations. These simulations account for the electrostatic- and shape-selective interactions in the zeolite and provide enthalpic barriers that are closely comparable to experiment. Cracking transition states for n-pentane lead ...
DOI:
10.1021/ja3089372

31. Ability of surfactant hydrophobic tail group size to alter lipid oxidation in oil-in-water emulsions

Author:
Chaiyasit, W.; Silvestre, M.P.C.; McClements, D.J.; Decker, E.A.
Source:
Journal of agricultural and food chemistry 2000 v.48 no.8 pp. 3077-3080
ISSN:
0021-8561
Subject:
fish oils; salmon; linoleic acid; oxidation; nonionic surfactants; water; emulsions; alkanes; hydrophobicity; structure-activity relationships; aldehydes
Abstract:
... Oxidation of oil-in-water emulsion droplets is influenced by the properties of the interfacial membrane surrounding the lipid core. Previous work has shown that an important factor in the oxidation of oil-in-water emulsions is surfactant properties that impact interactions between water-soluble prooxidants and lipids in the emulsion droplet. The purpose of this research was to study the impact of ...
DOI:
10.1021/jf000323e
PubMed:
10956071

32. About the nanostructure of the ternary system water – [BMIm]PF6 – TX-100

Author:
Harun Bilgili; Matthias Bürger; Cosima Stubenrauch; Jan H. Porada
Source:
Journal of Colloid And Interface Science 2016 v.484 pp. 237-248
ISSN:
0021-9797
Subject:
alkanes; hydrophilicity; hydrophobicity; micelles; mixing; nanomaterials; nuclear magnetic resonance spectroscopy; octoxynol; oxides; solvents; surfactants; toluene
Abstract:
... Many efforts have been made to formulate water-IL microemulsions. One of the most intensely studied systems is H2O – 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIm]PF6) – 4-octylphenol polyethoxylate (TX-100) and it is not questioned that this system forms microemulsions. The nanostructures observed for traditional microemulsions are postulated with the surfactant being adsorbed at the int ...
DOI:
10.1016/j.jcis.2016.08.083

33. Abscisic acid mediates wound-healing in harvested tomato fruit

Author:
Xiaoya Tao; Linchun Mao; Jiayin Li; Jingxin Chen; Wenjing Lu; Si Huang
Source:
Postharvest biology and technology 2016 v.118 pp. 128-133
ISSN:
0925-5214
Subject:
abscisic acid; alkanes; biosynthesis; enzyme activity; fluridone; pathogens; peroxidase; phenylalanine ammonia-lyase; staining; suberin; suberization; tomatoes; unsaturated fatty acids; water vapor; weight loss; wound periderm
Abstract:
... The development of wound periderm is vital to prevent water vapor loss and pathogen invasion in wounded fruit. The effect of abscisic acid (ABA) on wound-healing in harvested tomato fruit was evaluated in this study. Wounded tomato fruit were treated with ABA or fluridone (FLD, an inhibitor of ABA biosynthesis), respectively, and allowed to wound-heal at 20°C in darkness for 4days. Weight loss of ...
DOI:
10.1016/j.postharvbio.2016.04.002

34. Absence of cuticular alkenes allows lycaenid larvae to avoid predation by Formica japonica ants

Author:
Yutaro Morozumi; Tomotoshi Murakami; Michihito Watanabe; Shinji Ohta; Hisashi Ômura
Source:
Entomological science 2019 v.22 no.2 pp. 126-136
ISSN:
1343-8786
Subject:
Formica; Lycaeides argyrognomon; Lycaena; Papilio; Pieris rapae; aggression; alkanes; alkenes; bioassays; butterflies; foraging; insect cuticle; larvae; mimicry (behavior); predation; worker ants
Abstract:
... Chemical mimicry and camouflage based on cuticular hydrocarbons (CHCs) are adaptive strategies that are frequently observed in myrmecophilous insects. The larvae of several lycaenid butterfly species that exhibit obligate associations with specific ant species have been reported to use chemical mimicry. However, little is known about the strategies used by the larvae of species that have facultati ...
DOI:
10.1111/ens.12342

35. Absolute Configuration of trans-Perhydroazulene

Author:
Fumito Saito; Dennis Gerbig; Jonathan Becker; Peter R. Schreiner
Source:
Organic letters 2020 v.22 no.10 pp. 3895-3899
ISSN:
1523-7052
Subject:
alkanes; circular dichroism spectroscopy; enantiomers
Abstract:
... We present the absolute configuration (AC) determination of an alkane, trans-perhydroazulene (1), that displays the naturally very common trans fused [5,7] ring system. We outline the first synthesis yielding enantiopure 1 and the application of optical rotatory dispersion (ORD) and vibrational circular dichroism (VCD) techniques. The spectroscopic results are in excellent agreement with the compu ...
DOI:
10.1021/acs.orglett.0c01184

36. Absolute configuration of lippifoliane and africanane derivatives

Author:
Cerda-Garcia-Rojas, C.M.; Coronel, A. del C.; Lampasona, M.E.P. de; Catalan, C.A.N.; Joseph-Nathan, P.
Source:
Journal of natural products 2005 v.68 no.5 pp. 659-665
ISSN:
0163-3864
Subject:
Lippia; secondary metabolites; plant extracts; phytochemicals; alkanes; chemical structure; spectral analysis; stereochemistry; Argentina
DOI:
10.1021/np050004n
PubMed:
15921405

37. Abundance and Diversity of n-Alkane-Degrading Bacteria in a Forest Soil Co-Contaminated with Hydrocarbons and Metals: A Molecular Study on alkB Homologous Genes

Author:
Alfredo Pérez-de-Mora; Marion Engel; Michael Schloter
Source:
Microbial ecology 2011 v.62 no.4 pp. 959-972
ISSN:
0095-3628
Subject:
Acinetobacter; Gram-negative bacteria; Gram-positive bacteria; Mycobacterium; Nocardia; alkanes; biodegradation; bioremediation; cell respiration; clones; enzymes; forest soils; forests; genes; genetic variation; genotype; metals; microbial biomass; mineral oil; petroleum; phylogeny; pollution load; polymerase chain reaction; population size; population structure; soil bacteria; soil pollution; species diversity
Abstract:
... Unraveling functional genes related to biodegradation of organic compounds has profoundly improved our understanding of biological remediation processes, yet the ecology of such genes is only poorly understood. We used a culture-independent approach to assess the abundance and diversity of bacteria catalyzing the degradation of n-alkanes with a chain length between C₅ and C₁₆ at a forest site co-c ...
DOI:
10.1007/s00248-011-9858-z
PubMed:
21567188

38. Abundance and distribution of leaf wax n-alkanes in leaves of Acacia and Eucalyptus trees along a strong humidity gradient in northern Australia

Author:
Bernd Hoffmann; Ansgar Kahmen; Lucas A. Cernusak; Stefan K. Arndt; Dirk Sachse
Source:
Organic geochemistry 2013 v.62 no. pp. 62-67
ISSN:
0146-6380
Subject:
Acacia; Eucalyptus; alkanes; biomarkers; climate change; dry environmental conditions; hydrology; leaves; rain; relative humidity; temperature; trees; vegetation; Australia
Abstract:
... Environmental parameters such as rainfall, temperature and relative humidity can affect the composition of higher plant leaf wax. The abundance and distribution of leaf wax biomarkers, such as long chain n-alkanes, in sedimentary archives have therefore been proposed as proxies reflecting climate change. However, a robust palaeoclimatic interpretation requires a thorough understanding of how envir ...
DOI:
10.1016/j.orggeochem.2013.07.003

39. Abundance and diversity of n-alkane and PAH-degrading bacteria and their functional genes – Potential for use in detection of marine oil pollution

Author:
Andrea Bagi; Kamila Knapik; Thierry Baussant
Source:
Science of the total environment 2022 v.810 pp. 152238
ISSN:
0048-9697
Subject:
Cycloclasticus; alkanes; automation; environmental monitoring; marine environment; metagenomics; microbial communities; oils; oxygenases; pollution; seawater; species diversity
Abstract:
... Monitoring environmental status through molecular investigation of microorganisms in the marine environment is suggested as a potentially very effective method for biomonitoring, with great potential for automation. There are several hurdles to that approach with regards to primer design, variability across geographical locations, seasons, and type of environmental pollution. Here, qPCR analysis o ...
DOI:
10.1016/j.scitotenv.2021.152238

40. Abundance and diversity of soil petroleum hydrocarbon-degrading microbial communities in oil exploring areas

Author:
Yuyin Yang; Jie Wang; Jingqiu Liao; Shuguang Xie; Yi Huang
Source:
Applied microbiology and biotechnology 2015 v.99 no.4 pp. 1935-1946
ISSN:
0175-7598
Subject:
Mycobacterium; Pedobacter; alkanes; bacterial communities; biodegradation; bioremediation; biotechnology; environmental factors; genes; microorganisms; oils; petroleum; polycyclic aromatic hydrocarbons; soil; soil ecology; soil sampling
Abstract:
... Alkanes and polycyclic aromatic hydrocarbons (PAHs) are the commonly detected petroleum hydrocarbon contaminants in soils in oil exploring areas. Hydrocarbon-degrading genes are useful biomarks for estimation of the bioremediation potential of contaminated sites. However, the links between environmental factors and the distribution of alkane and PAH metabolic genes still remain largely unclear. Th ...
DOI:
10.1007/s00253-014-6074-z

41. Abundant tetracyclic terpenoids in a Middle Devonian foliated cuticular liptobiolite coal from northwestern China

Author:
Daofu Song; Bernd R.T. Simoneit; Dengfa He
Source:
Organic geochemistry 2017 pp. -
ISSN:
0146-6380
Subject:
alkanes; basins; biomarkers; coal; coatings; embryophytes; evaporation; resins; terpenoids; vascular tissues; weathering; China
Abstract:
... Cuticular liptobiolite coal, defined by its dominant cutinite, is rare and only known in a few regions of the world. An occurrence of this type of coal, found in the Devonian of the Hefeng Basin, Xinjiang (northwestern China), is described for the first time by organic petrography and biomarker analysis. The cuticular liptobiolite has distinct sheet-like layers and thus splits easily into leafy la ...
DOI:
10.1016/j.orggeochem.2017.02.010

42. Accelerated Dissipation of the Herbicide Cycloxydim on Wax Films in the Presence of the Fungicide Chlorothalonil and under the Action of Solar Light

Author:
Shirin Mondajemi; Alexandra ter Halle; Claire Richard
Source:
Journal of agricultural and food chemistry 2014 v.62 no.21 pp. 4846-4851
ISSN:
0021-8561
Subject:
alkanes; chlorothalonil; herbicides; leaves; oxidation; photolysis; spraying
Abstract:
... Photolysis is a known dissipation pathway of pesticides on leaves just after their spraying. This pathway may be affected by the residues of other pesticides. To illustrate this idea, this study investigated the mutual effect of two pesticides (chlorothalonil and cycloxydim) under simulated solar light. Cycloxydim was added at the agricultural rate (200 g ha–1) and chlorothalonil at 1.3–10% of ...
DOI:
10.1021/jf500771s

43. Accumulation and depuration of sediment-sorbed C12- and C16-polychlorinated alkanes by oligochaetes (Lumbriculus variegatus)

Author:
Fisk, A.T.; Wiens, S.C.; Webster, G.R.B.; Bergman, A.; Muir, D.C.G.
Source:
Environmental toxicology and chemistry 1998 v.17 no.10 pp. 2019-2026
ISSN:
0730-7268
Subject:
Lumbriculus variegatus; alkanes; bioaccumulation; bioavailability; biotransformation; carbon; chlorine; half life; hydrophobicity; invertebrates; octanol-water partition coefficients; sediments
Abstract:
... Oligochaetes (Lumbriculus variegatus) were exposed to sediment spiked with four 14C-polychlorinated alkanes (PCAs) (C12H20Cl6 [56% Cl by weight], C12H16,Cl10[69% Cl],C16H31Cl3[35%Cl], and C16H21Cl13 69% Cl]) to measure bioaccumulation parameters and biotransformation. Chlorinated paraffins are industrial products that consist of thousands of different PCAs. Chlorinated paraffins arc hydrophobic (l ...
DOI:
10.1897/1551-5028(1998)017<2019:AADOSS>2.3.CO;2

44. Accumulation and persistence of sewage and fish cannery pollution in coastal sediments (northern Adriatic Sea)

Author:
Paolo Paliaga; Igor Felja; Ugo Ušić; Ingrid Ivančić; Mirjana Najdek
Source:
Journal of soils and sediments 2017 v.17 no.6 pp. 1751-1766
ISSN:
1439-0108
Subject:
Streptococcus; alkanes; anaerobic conditions; beta-sitosterol; boats; cholesterol; coliform bacteria; coprostanol; diagnostic techniques; effluents; electrodes; fish; indicator species; most probable number technique; municipal wastewater; organic matter; polycyclic aromatic hydrocarbons; redox potential; sand fraction; sediments; sewage; sewage treatment; sieves; traffic; waste disposal; Adriatic Sea
Abstract:
... PURPOSE: The study was carried out in sediments exposed to three different types of sewage pollution: primary treated sewage waters, urban/fish cannery untreated effluents, and discharges from boats (harbors) to evaluate the level and sources of pollution and the relationships between organic contaminants and chemical-physical factors that affect their accumulation and persistence in sediments. Fo ...
DOI:
10.1007/s11368-016-1649-1

45. Accumulation of Short-, Medium-, and Long-Chain Chlorinated Paraffins in Marine and Terrestrial Animals from Scandinavia

Author:
Bo Yuan; Katrin Vorkamp; Anna Maria Roos; Suzanne Faxneld; Christian Sonne; Svend Erik Garbus; Ylva Lind; Igor Eulaers; Peter Hellström; Rune Dietz; Sara Persson; Rossana Bossi; Cynthia A. de Wit
Source:
Environmental science & technology 2019 v.53 no.7 pp. 3526-3537
ISSN:
1520-5851
Subject:
alkanes; bioaccumulation; birds of prey; falcons; fish; food chain; lipids; marine mammals; physicochemical properties; seabirds; terrestrial ecosystems; trophic levels; wildlife; Scandinavia
Abstract:
... Short-, medium-, and long-chain chlorinated paraffins (SCCPs, MCCPs, and LCCPs) have a wide range of physical-chemical properties, indicating their varying bioaccumulation tendencies in marine and terrestrial ecosystems. However, there are few empirical data to reveal such bioaccumulation tendencies. In this study, we analyzed SCCPs, MCCPs, and LCCPs in samples from 18 species at both low and high ...
DOI:
10.1021/acs.est.8b06518

46. Accumulation of coal humic acids by wheat seedlings: Direct evidence using tritium autoradiography and occurrence in lipid fraction

Author:
Natalia A. Kulikova; Gennadii A. Badun; Viktor I. Korobkov; Maria G. Chernysheva; Eugenia A. Tsvetkova; Dmitry P. Abroskin; Andrey I. Konstantinov; Boris T. Zaitchik; Alexander O. Ruzhitsky; Irina V. Perminova
Source:
Zeitschrift für Pflanzenernährung und Bodenkunde 2014 v.177 no.6 pp. 875-883
ISSN:
1436-8730
Subject:
Triticum aestivum; alkanes; alkenes; autoradiography; biosynthesis; coal; gas chromatography-mass spectrometry; humic acids; plant tissues; roots; seedlings; shoots; suberization; temperature; thin layer chromatography; tritium; waxes; wheat
Abstract:
... Humic acids (HA) are natural organic compounds that are important components of organic matter. The accumulation, distribution, and fate of tritium‐labeled HA prepared from coal were analyzed using wheat (Triticum aestivum L.) seedlings. There was a period of rapid accumulation of HA followed by a slower one in the period from 1 to 24 h. There was a significant decrease in HA accumulation at low t ...
DOI:
10.1002/jpln.201300648

47. Accumulation of mineral oil saturated hydrocarbons (MOSH) in female Fischer 344 rats: Comparison with human data and consequences for risk assessment

Author:
Laura Barp; Maurus Biedermann; Koni Grob; Florence Blas-Y-Estrada; Unni C Nygaard; Jan Alexander; Jean-Pierre Cravedi
Source:
Science of the total environment 2017 v.575 pp. 1263-1278
ISSN:
0048-9697
Subject:
adipose tissue; alkanes; animal experimentation; comprehensive two-dimensional gas chromatography; distillation; females; granuloma; humans; liver; mineral oil; molecular weight; rats; risk assessment; spleen
Abstract:
... Female Fischer 344 rats were orally exposed to a mixture of mineral oil saturated hydrocarbons (MOSH) of broad molecular mass range at doses of 40, 400 and 4000mg/kg feed. Amounts and compositions of the MOSH were analyzed in liver, spleen, adipose tissue and the carcass after exposure during 30, 60, 90 and 120d as well as after 90d exposure followed by 30d depuration. At 40mg/kg in the feed, afte ...
DOI:
10.1016/j.scitotenv.2016.09.203

48. Accumulation of n-alkanes and carboxylic acids in peat mounds

Author:
D. N. Gabov; V. A. Beznosikov; I. V. Gruzdev; E. V. Yakovleva
Source:
Eurasian soil science 2017 v.50 no.10 pp. 1138-1153
ISSN:
1064-2293
Subject:
alkanes; carboxylic acids; organic matter; peat; permafrost; thawing; Russia
Abstract:
... The quantitative and qualitative compositions of n-alkanes and carboxylic acids have been identified, and the features of their vertical stratification in peat mound profiles of the forest-tundra zone of Komi Republic have been revealed. The composition of n-alkanes (structures with C₂₃, C₂₅, C₂₇, C₂₉, and C₃₁) and carboxylic acids (C₂₄, C₂₆, and C₂₈) and their proportions make it possible to dete ...
DOI:
10.1134/S1064229317100027

49. Accumulation of petroleum hydrocarbons in intracellular lipid bodies of the freshwater diatom Synedra acus subsp. radians

Author:
Sergey M. Shishlyannikov; Alyona A. Nikonova; Igor V. Klimenkov; Alexander G. Gorshkov
Source:
Environmental science and pollution research international 2017 v.24 no.1 pp. 275-283
ISSN:
0944-1344
Subject:
Synedra; alkanes; aquatic environment; fatty acids; gas chromatography-mass spectrometry; hydrophobicity; lipid bilayers; lipid bodies; oils; persistent organic pollutants; petroleum; phytoplankton; polycyclic aromatic hydrocarbons
Abstract:
... The accumulation of hydrophobic compounds by phytoplankton plays a crucial role in the biogeochemical cycle of persistent organic pollutants (POPs) in aquatic environments. We studied the accumulation of polycyclic aromatic hydrocarbons (PAHs) in the freshwater diatom Synedra acus subsp. radians during its cultivation with crude oil hydrocarbons, using epifluorescent and laser confocal microscopy ...
DOI:
10.1007/s11356-016-7782-y

50. Accuracy of the n-alkane technique for intake estimates in beef cattle using different sampling procedures and feeding levels

Author:
Oliván, M.; Ferreira, L.M.M.; Celaya, R.; Osoro, K.
Source:
Livestock science 2007 v.106 no.1 pp. 28-40
ISSN:
1878-0490
Subject:
beef cattle; cattle feeding; ruminant nutrition; feeding level; feed intake; analytical methods; biomarkers; alkanes; excretion; feces; sampling; feeds; hay; alfalfa; estimation; accuracy; reliability; digestive physiology; kinetics; excretory system physiology; forage
DOI:
10.1016/j.livsci.2006.06.015

51. Accurate determination of volatile-flavor components in bos grunniens milk by high-throughput dynamic headspace gas chromatographic-mass spectrometry

Author:
Wei Jia; Rong Zhang; Lin Shi; Feng Zhang; James Chang; Xiaogang Chu
Source:
Journal of chromatography 2019 v.1603 pp. 67-82
ISSN:
0021-9673
Subject:
acids; aldehydes; alkanes; aromatic compounds; desorption; detection limit; gas chromatography-mass spectrometry; headspace analysis; ketones; milk; odors; principal component analysis; response surface methodology; sodium chloride; standard deviation; temperature; volatile compounds; yaks
Abstract:
... A dynamic headspace (DHS) with DVB/CAR/PDMS trapping materials was coupled to a gas chromatography-mass spectrometry for the separation and identification of volatile-flavor compounds in bos grunniens (yak) milk. The principal components analysis coupled with response surface methodology optimized the main variables of the device (10 g sample quality, 5 min desorption time, 3.0 g adding sodium chl ...
DOI:
10.1016/j.chroma.2019.06.058

52. Achieving reversible thermochromism of bisdiynamide polydiacetylene via self-assembling in selected solvents

Author:
Chanita Khanantong; Nipaphat Charoenthai; Sumrit Wacharasindhu; Mongkol Sukwattanasinitt; Watsapon Yimkaew; Nisanart Traiphol; Rakchart Traiphol
Source:
Colloids and surfaces 2020 v.603 pp. 125225
ISSN:
0927-7757
Subject:
X-ray diffraction; alkanes; colorimetry; infrared spectroscopy; particle size; solvents
Abstract:
... This contribution demonstrates a new approach for achieving reversible thermochromism of bisdiynamide polydiacetylene(bis-PDA). The use of specific solvent as a medium can promote molecular organization and crystal growth of bis-PDA assemblies, which in turn results in reversible thermochromism. In this study, bis-PDAs constituting symmetric alkyl tails were prepared by self-assembling in water or ...
DOI:
10.1016/j.colsurfa.2020.125225

53. Acid pretreatment increased lipid biomarker extractability: a case study to reveal soil organic matter input from rubber trees after long‐term cultivation

Author:
F. F. Li; P. C. Zhang; D. P. Wu; Y. Xu; F. Y. Chen; Z. F. Chang; G. Chu; L. Wang; B. Pan; B. S. Xing
Source:
European journal of soil science 2018 v.69 no.2 pp. 315-324
ISSN:
1351-0754
Subject:
Hevea brasiliensis; acid treatment; acids; alkanes; bamboos; biomarkers; case studies; chemical structure; ecosystems; humans; leaching; lipids; minerals; soil; soil minerals; soil organic matter; solvents; tissues; vegetation
Abstract:
... The lipids extractable by organic solvents are important components of soil organic matter (SOM) and were used to trace the sources and degradation of SOM. Previous studies have suggested soil mineral protection of lipids, which might decrease the efficiency of extraction of some lipid compounds by organic solvents. Therefore, in this study we applied a mild acid treatment to remove most of the re ...
DOI:
10.1111/ejss.12501

54. Acid-Free Conversion of Cellulose to 5-(Hydroxymethyl)furfural Catalyzed by Hot Seawater

Author:
Xiangcheng Li; Yayun Zhang; Qineng Xia; Xiaohui Liu; Kaihao Peng; Sihai Yang; Yanqin Wang
Source:
Industrial & engineering chemistry process design and development 2018 v.57 no.10 pp. 3545-3553
ISSN:
1520-5045
Subject:
alkanes; biofuels; biomass; catalysts; cellulose; fructose; furfural; glucose; hydroxymethylfurfural; isomerization; lignin; lignocellulose; process design; seawater; tetrahydrofuran
Abstract:
... The conversion of cellulose from renewable biomass into the key platform chemical, 5-hydroxymethylfurfural (HMF), is of fundamental importance to the production of numerous bioproducts and biofuels. Various acidic catalysts have been developed for this process; however, most systems suffer from low efficiency and poor sustainability. Here, we report an acid-free conversion of cellulose into HMF in ...
DOI:
10.1021/acs.iecr.8b00443

55. Acidic phospholipid‐independent interaction of Yas3p, an Opi1‐family transcriptional repressor of Yarrowia lipolytica, with the endoplasmic reticulum

Author:
Satoshi Kobayashi; Satoshi Tezaki; Hiroyuki Horiuchi; Ryouichi Fukuda; Akinori Ohta
Source:
Yeast 2015 v.32 no.12 pp. 691-701
ISSN:
0749-503X
Subject:
Yarrowia lipolytica; alkanes; cytochrome P-450; endoplasmic reticulum; hydroxylation; mutants; phospholipids; promoter regions; repressor proteins; transcriptional activation; yeasts
Abstract:
... In the n‐alkane‐assimilating yeast Yarrowia lipolytica, the transcription of ALK1, encoding cytochrome P450, that catalyses n‐alkane hydroxylation is activated by a complex composed of Yas1p and Yas2p via a promoter element, ARE1, in response to n‐alkanes. An Opi1‐family transcription factor, Yas3p, represses the transcription by binding to Yas2p in the nucleus when cultured in glucose‐containing ...
DOI:
10.1002/yea.3096

56. Acinetobacter mesopotamicus sp. nov., Petroleum-degrading Bacterium, Isolated from Petroleum-Contaminated Soil in Diyarbakir, in the Southeast of Turkey

Author:
Ömer Acer; Kemal Güven; Annarita Poli; Paola Di Donato; Luigi Leone; Lorena Buono; Reyhan Gül Güven; Barbara Nicolaus; Ilaria Finore
Source:
Current microbiology 2020 v.77 no.10 pp. 3192-3200
ISSN:
0343-8651
Subject:
Acinetobacter lwoffii; alkanes; bacteria; cardiolipins; chemotaxonomy; computer simulation; genome; new species; nucleic acid hybridization; nucleotide sequences; petroleum; phenotype; phosphatidic acids; phosphorylcholine; phylogeny; sequence analysis; ubiquinones
Abstract:
... A new petroleum-degrading bacterium, designated strain GC2ᵀ, was isolated from Bozkuş 1 petroleum station in Diyarbakir, located in the southeast of Turkey. Cells were Gram-negative staining, aerobic, coccoid-rods, non-motile, non-spore-forming. The bacterium was found to degrade 100% of n-alkanes ranging from C11 to C34 presented in the 1% crude oil after incubation of 7 days. The membrane phosph ...
DOI:
10.1007/s00284-020-02134-9

57. Acinetobacter sp. Ud-4 Efficiently Degrades Both Edible and Mineral Oils: Isolation and Characterization

Author:
Tanaka, Daisuke; Takashima, Miyuki; Mizuta, Asako; Tanaka, Shunsuke; Sakatoku, Akihiro; Nishikawa, Atsushi; Osawa, Tsutomu; Noguchi, Munenori; Aizawa, Shin-Ichi; Nakamura, Shogo
Source:
Current microbiology 2010 v.60 no.3 pp. 203-209
ISSN:
0343-8651
Subject:
Acinetobacter; DNA primers; alkanes; bacteria; canola oil; carbon; genes; lard; olive oil; ribosomal DNA; seawater; sesame oil; soybean oil; Japan
Abstract:
... A novel Acinetobacter strain, Ud-4, possessing a strong capacity to degrade edible, lubricating, and heavy oil was isolated from seawater in a fishing port located in Toyama, Japan. It was identified by morphological and physiological analyses and 16S rDNA sequencing. This strain could utilize five types of edible oils (canola oil, olive oil, sesame oil, soybean oil, and lard), lubricating oil, an ...
DOI:
10.1007/s00284-009-9525-5
PubMed:
19847483

58. Acridone-based derivatives exhibit excellent third-order NLO properties by extending the π system

Author:
Jianhong Jia; Guanqiu Liang; Ziqiang Zhu; Jian Wang; Yuanbin She
Source:
Tetrahedron 2021 v.87 pp. 132084
ISSN:
0040-4020
Subject:
acetylene; alkanes; electrochemistry; fluorescence emission spectroscopy; optics; spectrophotometers; urea; voltammetry
Abstract:
... Acridone derivatives have much attracted attention due to their objective photoelectric properties. However, their applications in nonlinear optical (NLO) materials are rarely studied. In this work, we designed and synthesized four D-π-A-π-D acridone derivatives and one D-A-D type derivative as comparison. The effects of the structure on photophysics, electrochemistry and the third-order nonlinear ...
DOI:
10.1016/j.tet.2021.132084

59. Actions of Mycobacterium sp. Strain AP1 on the Saturated- and Aromatic-Hydrocarbon Fractions of Fuel Oil in a Marine Medium

Author:
Vila, Joaquim; Grifoll, Magdalena
Source:
Applied and environmental microbiology 2009 v.75 no.19 pp. 6232-6239
ISSN:
0099-2240
Subject:
phenanthrenes; phthalic acid; carbon; fuel oils; alkanes; seawater; oxidation; Mycobacterium; metabolites
Abstract:
... The pyrene-degrading Mycobacterium sp. strain AP1 grew in nutrient-supplemented artificial seawater with a heavy fuel oil as the sole carbon source, causing the complete removal of all linear (C₁₂ to C₄₀) and branched alkanes from the aliphatic fraction, as well as an extensive degradation of the three- and four-ring polycyclic aromatic hydrocarbons (PAHs) phenanthrene (95%), anthracene (80%), flu ...
DOI:
10.1128/AEM.02726-08

60. Activation of B–H, Si–H, and C–F Bonds with Tp′Rh(PMe3) Complexes: Kinetics, Mechanism, and Selectivity

Author:
Procacci Barbara; Jiao Yunzhe; Evans Meagan E.; Jones William D.; Perutz Robin N.; Whitwood Adrian C.
Source:
Journal of the American Chemical Society 2015 v.137 no.3 pp. 1258-1272
ISSN:
1520-5126
Subject:
alkanes; benzene; borates; chemical bonding; crystal structure; hydrogen; nuclear magnetic resonance spectroscopy; photolysis
Abstract:
... The photochemical reactions of Tp′Rh(PMe₃)H₂ (1) and thermal reactions of Tp′Rh(PMe₃)(CH₃)H (1a, Tp′ = tris(3,5-dimethylpyrazolyl)borate) with substrates containing B–H, Si–H, C–F, and C–H bonds are reported. Complexes 1 and 1a are known activators of C–H bonds, including those of alkanes. Kinetic studies of reactions with HBpin and PhSiH₃ show that photodissociation of H₂ from 1 occurs prior to s ...
DOI:
10.1021/ja5113172

61. Activation of persulfate and removal of ethyl-parathion from soil: Effect of microwave irradiation

Author:
Duo Miao; Song Zhao; Kecheng Zhu; Peng Zhang; Tiecheng Wang; Hanzhong Jia; Hongwen Sun
Source:
Chemosphere 2020 v.253 pp. 126679
ISSN:
0045-6535
Subject:
alkanes; electron paramagnetic resonance spectroscopy; gas chromatography-mass spectrometry; microwave radiation; microwave treatment; oxidation; p-nitrophenol; paraoxon; phosphates; polluted soils; remediation; temperature; water pollution
Abstract:
... Advanced persulfate oxidation technology is widely used in organic pollution control of super fund sites. In recent years, microwave radiation has been proven a promising method for persulfate activation. However, most of the prior works were focused on the treatment of polluted water, but there are few reports aiming at contaminated sites, especially the knowledge of using microwave activated per ...
DOI:
10.1016/j.chemosphere.2020.126679

62. Active Mineral Fillers Arrest Migrations of Alkane Acids to the Interface of Bitumen and Siliceous Surfaces

Author:
Elham H. Fini; Albert M. Hung; Anirban Roy
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.12 pp. 10340-10348
ISSN:
2168-0485
Subject:
acids; adhesion; alkanes; aluminum oxide; atomic force microscopy; bitumen; calcium carbonate; crystallization; infrared spectroscopy; pavements; powders; risk; silica; surface area
Abstract:
... Moisture damage is one of the most intractable and costly pavement damage problems. Acid compounds in bitumen are implicated in the increased risk of moisture damage at the bitumen–aggregate interface, especially in cases where siliceous aggregates are used in pavement structure. This paper examines the efficacy of using active mineral powders as dopants in bitumen to control the migration of alka ...
DOI:
10.1021/acssuschemeng.9b00352

63. Active Paraffin-Based Paper Packaging for Extending the Shelf Life of Cherry Tomatoes

Author:
Rodriguez-Lafuente, Angel; Nerin, Cristina; Batlle, Ramon
Source:
Journal of agricultural and food chemistry 2010 v.58 no.11 pp. 6780-6786
ISSN:
0021-8561
Subject:
in vivo studies; shelf life; essential oils; food packaging; carvacrol; tomatoes; food storage; Alternaria alternata; cinnamon; leaves; antifungal properties; weight; packaging materials; coatings; packaging materials migration; storage time; kraft paper; in vitro studies; cloves; oregano; alkanes; pH; color; bark; water activity
Abstract:
... A new active paraffin coating for paper and board was evaluated for antimicrobial protection and decay retardation for cherry tomatoes. Different active agents were evaluated against Alternaria alternata fungus both in vitro and in vivo using artificially inoculated cherry tomatoes. Bark cinnamon and oregano essential oil showed the best performance (versus clove and leaf cinnamon essential oils) ...
DOI:
10.1021/jf100728n
PubMed:
20476770

64. Active iron bound to SOM catalyzes the oxidization of alkanes in soil by H₂O₂

Author:
Jinlan Xu; Qianqian Cao; Miaojia Zhang; Chengwei Yang
Source:
Environmental science 2018 v.20 no.9 pp. 1273-1284
ISSN:
2050-7895
Subject:
alkanes; catalytic activity; energy; environmental science; hydrogen peroxide; hydrophobicity; hydroxyl radicals; iron; moieties; oxidation; petroleum; polluted soils; soil organic matter
Abstract:
... To explore the oxidation effects and mechanisms for the oxidation of alkanes by H₂O₂ in a Fenton system catalyzed by two types of iron bound to soil organic matter (Fe-SOM) in crude oil-contaminated soil, an oxidation experiment was performed in active Fe-SOM and Fe-SOM systems. The results showed that the TPH removal ability of active Fe-SOM (average 0.36 g TPH/g Fe-SOM) was 2.25-fold higher than ...
DOI:
10.1039/c8em00129d

65. Active, selective, and stable Pt/Na-[Fe]ZSM5 catalyst for the dehydrogenation of light alkanes

Author:
Toshio Waku; Joseph A. Biscardi; Enrique Iglesia
Source:
Chemical communications 2003 v. no.14 pp. 1764-1765
ISSN:
1364-548X
Subject:
alkanes; catalysts; catalytic activity; dehydrogenation; iron; platinum; sodium
Abstract:
... Small Pt clusters in Na-[Fe]ZSM5 give high alkene selectivities, near-equilibrium alkene yields, and unprecedented stability in the catalytic dehydrogenation of light alkanes. ...
DOI:
10.1039/b303506a

66. Acute episodes of black carbon and aerosol contamination in a museum environment: Results of integrated real-time and off-line measurements

Author:
L. Cartechini; S. Castellini; B. Moroni; M. Palmieri; F. Scardazza; B. Sebastiani; R. Selvaggi; M. Vagnini; G.L. Delogu; B.G. Brunetti; D. Cappelletti
Source:
Atmospheric environment 2015 v.116 pp. 130-137
ISSN:
1352-2310
Subject:
aerosols; alkanes; atmospheric chemistry; biomass; carbon; case studies; chemical analysis; chromatography; combustion; ozone; polycyclic aromatic hydrocarbons; restaurants; wood
Abstract:
... Aerosol size distributions together with black carbon and ozone concentrations have been recorded simultaneously at high temporal resolution (1 min) for three seasonal campaigns in a museum environment. The aerosol measurements were essential to individuate acute episodes of black carbon intrusions, generated every day at meal times from a wood-burning oven located in an adjacent restaurant. This ...
DOI:
10.1016/j.atmosenv.2015.06.033

67. Adaptation of Rhodococcus erythropolis DCL14 to growth on n-alkanes, alcohols and terpenes

Author:
Carla C. C. R. de Carvalho; Beatriz Parreño-Marchante; Grit Neumann; M. Manuela R. da Fonseca; Hermann J. Heipieper
Source:
Applied microbiology and biotechnology 2005 v.67 no.3 pp. 383-388
ISSN:
0175-7598
Subject:
Rhodococcus erythropolis; alkanes; carbon; cell membranes; energy; ethanol; fatty acid composition; fatty acids; flavor; methanol; phospholipids; terpenoids
Abstract:
... Rhodococcus erythropolis DCL14 has the ability to convert the terpene (−)-carveol to the valuable flavour compound (−)-carvone when growing on a wide range of carbon sources. To study the effect of carbon and energy sources such as alkanes, alkanols and terpenes on the biotechnological process, the cellular adaptation at the level of fatty acid composition of the membrane phospholipids and the (−) ...
DOI:
10.1007/s00253-004-1750-z
PubMed:
15856218

68. Adaptation of Rhodococcus erythropolis cells for growth and bioremediation under extreme conditions

Author:
Carla C.C.R. de Carvalho
Source:
Research in microbiology 2012 v.163 no.2 pp. 125-136
ISSN:
0923-2508
Subject:
Rhodococcus erythropolis; alcohols; alkanes; bacteria; bioremediation; cell growth; cell membranes; copper sulfate; extremophiles; fatty acid composition; ionic strength; pH; polyunsaturated fatty acids; sodium chloride; temperature
Abstract:
... Bioremediation of contaminated sites is rarely performed in nature under ideal growth conditions for bacteria. Extremophiles can grow at extreme values of temperature, pH, ionic strength and metal concentrations, but it may be difficult to find and isolate those possessing the required metabolic activities. In the present work, Rhodococcus erythropolis, a bacterium known to possess a large number ...
DOI:
10.1016/j.resmic.2011.11.003

69. Added Alkane Allows Thermal Thinning of Supramolecular Columns by Forming SuperlatticeAn X-ray and Neutron Study

Author:
Yen Ming-Huei; Chaiprapa Jitrin; Zeng Xiangbing; Liu Yongsong; Cseh Liliana; Mehl Georg H.; Ungar Goran
Source:
Journal of the American Chemical Society 2016 v.138 no.18 pp. 5757-5760
ISSN:
1520-5126
Subject:
X-radiation; active ingredients; alkanes; benzoates; liquid crystals; periodicity; thermal expansion
Abstract:
... We report a columnar superlattice formed by blends of dendron-like Li 3,4,5-tris(n-alkoxy)benzoates with n-alkanes. Without the alkane, the wedge-shaped molecules form liquid crystal columns with 3 dendrons in a supramolecular disk. The same structure exists in the blend, but on heating one dendron is expelled from the disks in every third column and is replaced by the alkane. This superlattice of ...
DOI:
10.1021/jacs.6b01172

70. Adhesion Energies of Liquid Hydrocarbon Solvents onto Pt(111), MgO(100), Graphene, and TiO₂(110) from Temperature-Programmed Desorption Energies

Author:
John R. Rumptz; Charles T. Campbell
Source:
Journal of physical chemistry 2021 v.125 no.51 pp. 27931-27937
ISSN:
1932-7455
Subject:
adhesion; adsorption; alkanes; desorption; energy; graphene; liquids; solvents
Abstract:
... Knowledge of the adhesion energy between a liquid solvent and a clean solid surface allows for a straightforward estimation of the decrease in the adsorption energy of reactant molecules on that surface due to the presence of that liquid solvent relative to gas-phase adsorption energies. Such estimations in turn can be used to aid the design of liquid-phase catalysts, electrocatalysts, and chemica ...
DOI:
10.1021/acs.jpcc.1c08949

71. Adhesion of Alkane as a Functional Group on Muscovite and Quartz: Dependence on pH and Contact Time

Author:
Juhl K. M. S.; Pedersen C. S.; Bovet N.; Dalby K. N.; Hassenkam T.; Andersson M. P.; Okhrimenko D.; Stipp S. L. S.
Source:
Langmuir 2014 v.30 no.48 pp. 14476-14485
ISSN:
1520-5827
Subject:
adhesion; air; alkanes; aqueous solutions; atomic force microscopy; carbon; cations; energy; hydrophobicity; models; moieties; muscovite; pH; quartz
Abstract:
... The interactions between mineral surfaces and organic molecules in water control many processes in nature and in the production of modern materials. To improve the understanding of fluid–surface interactions, we investigated the interface behavior of quartz and muscovite, a model for clay minerals, in aqueous solutions where the pH and composition were controlled. We used atomic force microscopy ( ...
DOI:
10.1021/la5024967

72. Adsorbed Organic Material and Its Control on Wettability

Author:
Matthiesen J.; Hassenkam T.; Bovet N.; Dalby K. N.; Stipp S. L. S.
Source:
Energy & Fuels 2017 v.31 no.1 pp. 55-64
ISSN:
1520-5029
Subject:
adhesion; alkanes; atomic force microscopy; carbon; cations; droplets; ethanol; kerosene; minerals; oil fields; oils; ozonation; ozone; salinity; sand; sandstone; seawater; solvents; wettability
Abstract:
... Laboratory core flood and field scale tests have demonstrated that 5–40% more oil can be released from sandstone reservoirs by injecting low salinity water, rather than high salinity fluids, such as seawater or formation water. The effect has been explained by a change in wettability of the minerals that form the pore surfaces, as a result of the decrease in divalent cation concentration. We have ...
DOI:
10.1021/acs.energyfuels.6b00627

73. Adsorption Behaviors of Mixed Monolayers of n-Alkanes at the Liquid–Solid Interface

Author:
Hibino Masahiro
Source:
Langmuir 2016 v.32 no.19 pp. 4705-4709
ISSN:
1520-5827
Subject:
Gibbs free energy; adsorption; alkanes; chemical interactions; graphene; interface phenomena; models; scanning tunneling microscopy
Abstract:
... To understand the self-assembly of monolayers at the liquid–solid interface, a thermodynamic model, which describes the contributions of the molecular interactions, is essential. We present an adapted Zimm–Bragg model of the cooperativity transitions for determining the Gibbs free energy for self-assembly at the liquid–solid interface. Scanning tunneling microscopy was used to observe the monolaye ...
DOI:
10.1021/acs.langmuir.5b04021

74. Adsorption Isotherms of Liquid Isomeric Mixtures

Author:
Thomas Goetsch; Patrick Zimmermann; Bettina Scharzec; Sabine Enders; Tim Zeiner
Source:
Industrial & engineering chemistry process design and development 2018 v.57 no.32 pp. 11210-11218
ISSN:
1520-5045
Subject:
adsorbents; adsorption; alkanes; coal; density functional theory; liquids; model validation; models; prediction; process design; silica gel; sorption isotherms; zeolites
Abstract:
... To separate linear and branched molecules in a liquid state, adsorption on porous materials is a promising separation method. To calculate the adsorption isotherms, a combination of lattice cluster theory and density functional theory was introduced recently, allowing the prediction of branched molecules’ adsorption isotherms based on the knowledge of the adsorption isotherms of the pure linear su ...
DOI:
10.1021/acs.iecr.8b02296

75. Adsorption Thicknesses of Confined Pure and Mixing Fluids in Nanopores

Author:
Kaiqiang Zhang; Na Jia; Lirong Liu
Source:
Langmuir 2018 v.34 no.43 pp. 12815-12826
ISSN:
1520-5827
Subject:
adsorption; alkanes; carbon; carbon dioxide; equations; mixing; models; nanopores; sorption isotherms; temperature; thermodynamics
Abstract:
... In this paper, adsorption thicknesses of confined pure and mixing fluids in nanopores are quantitatively determined and their influential factors are specifically evaluated. First, a new analytical formulation is developed thermodynamically to calculate the adsorption thicknesses. Second, a new generalized equation of state (EOS), which considers the confinement effect-induced phenomena, is develo ...
DOI:
10.1021/acs.langmuir.8b02925

76. Adsorption and Desorption of Mixtures of Organic Vapors on Beaded Activated Carbon

Author:
Wang Haiyan; Jahandar Lashaki Masoud; Fayaz Mohammadreza; Hashisho Zaher; Philips John H.; Anderson James E.; Nichols Mark
Source:
Environmental Science & Technology 2012 v.46 no.15 pp. 8341-8350
ISSN:
1520-5851
Subject:
activated carbon; adsorption; alkanes; boiling point; desorption; gas chromatography-mass spectrometry; nitrogen; solvents; vapors
Abstract:
... In this study, adsorption and desorption of mixtures of organic compounds commonly emitted from automotive painting operations were experimentally studied. A mixture of two alkanes and a mixture of eight organic compounds were adsorbed onto beaded activated carbon (BAC) and then thermally desorbed under nitrogen. Following both adsorption and regeneration, samples of the BAC were chemically extrac ...
DOI:
10.1021/es3013062

77. Adsorption efficiency of poly(ethylene glycol)/chitosan/CNT blends for maltene fraction separation

Author:
Z. Abdeen
Source:
Environmental science and pollution research international 2016 v.23 no.11 pp. 11240-11246
ISSN:
0944-1344
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; alkanes; aromatic compounds; carbon nanotubes; ethylene glycol; hydrocolloids; mixing; polyethylene glycol; resins; scanning electron microscopy; water uptake
Abstract:
... Poly(ethylene glycol)/chitosan (PEG/CH) hydrogel and its composite containing carbon nanotubes (PEG/CH/CNTs) were prepared using a simple blending method. The effect of the PEG/CH ratio on the water uptake was studied and optimized. And the prepared hydrogels were characterized by XRD, SEM, and FTIR. Also, the ability of each of the prepared hydrogels to adsorb and separate maltene fractions was c ...
DOI:
10.1007/s11356-016-6225-0

78. Adsorption of 4-n-Nonylphenol, Carvacrol, and Ethanol onto Iron Oxide from Nonaqueous Hydrocarbon Solvents

Author:
Richard M. Alloway; Jennings Mong; Izaak W. Jephson; Mary H. Wood; Michael T. L. Casford; Peter Grice; Sorin V. Filip; Ibrahim E. Salama; Colm Durkan; Stuart M. Clarke
Source:
Langmuir 2019 v.35 no.36 pp. 11662-11669
ISSN:
1520-5827
Subject:
adsorption; alkanes; carvacrol; enthalpy; entropy; ethanol; heat production; iron oxides; nuclear magnetic resonance spectroscopy; separation; solubility; solvents; sorption isotherms
Abstract:
... The adsorption of 4-n-nonylphenol (4NP), carvacrol, and ethanol onto the surface of iron oxide from nonaqueous solutions is presented. It is found that adsorption of 4NP from alkanes is strong and proceeds to monolayer formation, where the molecules are essentially “upright”. However, at high relative concentrations, ethanol successfully out-competes 4NP for the iron oxide surface. Estimates of th ...
DOI:
10.1021/acs.langmuir.9b01863

79. Adsorption of Alkyltrimethylammonium Bromides at Water/Alkane Interfaces: Competitive Adsorption of Alkanes and Surfactants

Author:
Fainerman V. B.; Mucic N.; Pradines V.; Aksenenko E. V.; Miller R.
Source:
Langmuir 2013 v.29 no.45 pp. 13783-13789
ISSN:
1520-5827
Subject:
adsorption; air; alkanes; aqueous solutions; bromides; models; oils; surfactants; thermodynamics
Abstract:
... The adsorption of members of the homologous series of alkyl trimethylammonium bromides (CₙTAB) is studied at water/alkane interfaces by drop profile analysis tensiometry. The results are discussed in terms of a competitive adsorption process of alkane and surfactant molecules. A thermodynamic model, derived originally for the adsorption of surfactant mixtures, is adapted such that it describes a c ...
DOI:
10.1021/la402782e

80. Adsorption of Hexacontane on Hexagonal Boron Nitride

Author:
Juan D. Albar; Vladimir V. Korolkov; Matteo Baldoni; Kenji Watanabe; Takashi Taniguchi; Elena Besley; Peter H. Beton
Source:
Journal of physical chemistry 2018 v.122 no.48 pp. 27575-27581
ISSN:
1932-7455
Subject:
X-radiation; adsorption; alkanes; atomic force microscopy; boron nitride; crystallization; energy; graphene; mechanics; periodicity; sublimation
Abstract:
... We have investigated the adsorption of hexacontane (C₆₀H₁₂₂) on hexagonal boron nitride (hBN) using atomic force microscopy (AFM). The molecules can be deposited either by sublimation or from solution and form lamellar rows with dimensions of the order of 0.1–1 μm in three different rotational domains. High-resolution AFM images reveal that, similar to alkanes on graphite, the molecules are adsorb ...
DOI:
10.1021/acs.jpcc.8b10167

81. Adsorption of dispersants at a polyester resin–alkane interface

Author:
Shannon M. Notley; Vincent S.J. Craig; Andrew Fogden; Drew R. Evans
Source:
Colloids and surfaces 2011 v.377 no.1-3 pp. 318-324
ISSN:
0927-7757
Subject:
adsorption; alkanes; colloids; dispersions; polyesters; printing inks
Abstract:
... Non-aqueous colloidal dispersions form the basis of many real-world applications, including electro-rheological fluids in automotive assemblies and inks in printing devices. The dispersion of particles within the non-aqueous liquid is typically stabilised by the use of dispersants, which adsorb to the particle/liquid interface and provide steric and/or electrical forces to prevent their aggregatio ...
DOI:
10.1016/j.colsurfa.2011.01.022

82. Adsorption of dissolved organic matter from landfill leachate using activated carbon prepared from sewage sludge and cabbage by ZnCl2

Author:
Fan Zeng; Xiaofeng Liao; Danping Pan; Huangang Shi
Source:
Environmental science and pollution research international 2020 v.27 no.5 pp. 4891-4904
ISSN:
0944-1344
Subject:
Brassica oleracea; activated carbon; adsorbents; adsorption; alkanes; cabbage; carbonization; chemical oxygen demand; dissolved organic matter; fluorescence emission spectroscopy; gas chromatography-mass spectrometry; iodine; landfill leachates; pH; porosity; porous media; sewage sludge; sorption isotherms; surface area; zinc chloride
Abstract:
... Sewage sludge and cabbage (Brassica oleracea) were used to prepare activated carbon by high-temperature inert carbonization with the activator ZnCl₂. The physicochemical characteristics of the sludge-based activated carbon (SAC) were analyzed, and the effects on the removal of chemical oxygen demand (COD) from the landfill leachate by the adsorbent dosage, adsorption time, and the solution pH were ...
DOI:
10.1007/s11356-019-07233-0

83. Adsorption of selected azo dyes from an aqueous solution by activated carbon derived from Monotheca buxifolia waste seeds

Author:
Ruqia Nazir; Muslim Khan; Riaz Ur Rehman; Shaukat Shujah; Mansoor Khan; Mohib Ullah; Amir Zada; Nasir Mahmood; Irshad Ahmad
Source:
Soil and Water Research v.15 no.3 pp. 166-172
ISSN:
1801-5395
Subject:
Fourier transform infrared spectroscopy; activated carbon; adsorbents; adsorption; alkanes; alkenes; aqueous solutions; electrostatic interactions; pH; research; soil; sorption isotherms; spectral analysis; temperature; water
Abstract:
... In this study, activated carbon derived from Monotheca buxifolia waste seeds was used for the adsorptive removal of a number of selected azo dyes such as Eriochrome Black T (EBT), Remazol brilliant blue (RBB), Remazol yellow (RY) and Remazol brilliant orange (RBO) from an aqueous solution by changing the initial dye concentration, adsorbent dosage, solution pH, contact time and temperature. A Four ...
DOI:
10.17221/59/2019-swr

84. Adsorption of sugar surfactants at the air/water interface

Author:
Imre Varga; Róbert Mészáros; Cosima Stubenrauch; Tibor Gilányi
Source:
Journal of colloid and interface science 2012 v.379 no.1 pp. 78-83
ISSN:
0021-9797
Subject:
adsorption; air; alkanes; bromides; energy; hydrophobicity; methodology; sorption isotherms; sugars; surface tension; surfactants
Abstract:
... The adsorption isotherms of n-decyl-β-d-glucoside (β-C₁₀G₁) as well as various n-alkyl-β-d-maltosides (β-CₙG₂) with n=8, 10, 12 and 14 were determined from surface tension measurements. Based on the analysis of the adsorption isotherms, the total free energy change of adsorption was determined and a novel method was proposed to determine the maximum adsorbed amount of surfactant. It can be conclud ...
DOI:
10.1016/j.jcis.2012.04.053

85. Adsorptive Characterization of the ZIF-68 Metal-Organic Framework: A Complex Structure with Amphiphilic Properties

Author:
Van der Perre Stijn; Van Assche Tom; Bozbiyik Belgin; Lannoeye Jeroen; De Vos Dirk. E.; Baron Gino V.; Denayer Joeri F. M.
Source:
Langmuir 2014 v.30 no.28 pp. 8416-8424
ISSN:
1520-5827
Subject:
acetone; acetonitrile; adsorption; alcohols; alkanes; benzene; coordination polymers; diffusivity; hydrophobicity; isomers; liquids; sorption isotherms; surfactants; toluene; vapors; xylene
Abstract:
... In this experimental study, the adsorption behavior of the ZIF-68 heterolinked zeolitic imidazolate framework has been explored. Vapor phase adsorption isotherms of linear C1–C6 alcohols, C6 alkane isomers, aromatics (benzene, toluene, xylene isomers, 1,3,5-trimethylbenzene, and 1,3,5-triisopropylbenzene), and polar adsorbates (water, acetonitrile, and acetone) are reported and discussed. The comp ...
DOI:
10.1021/la501594t

86. Adsorptive Removal of Pentachlorophenol by Anthracophyllum discolor in a Fixed-Bed Column Reactor

Author:
Olga Rubilar; Gonzalo R. Tortella; Raphael Cuevas; Mara Cea; Susana Rodríguez-Couto; María Cristina Diez
Source:
Water, air, and soil pollution 2012 v.223 no.5 pp. 2463-2472
ISSN:
0049-6979
Subject:
Fourier transform infrared spectroscopy; acid value; adsorption; alkanes; amines; binding sites; biomass; bioreactors; models; pH; pentachlorophenol; white-rot fungi
Abstract:
... This study investigates pentachlorophenol (PCP) adsorption by the white-rot fungus Anthracophyllum discolor in a fixed-bed column reactor. PCP adsorption at different concentrations (20, 30, and 50 mg L−1) and pH values (5.0, 5.5, and 6.0) was determined and modeled using the Thomas model. Fourier transform infrared spectroscopy (FTIR) was used to identify functional groups of biomass that may par ...
DOI:
10.1007/s11270-011-1039-7

87. Advanced Aspects of Crude Oils Correlating Data of Classical Biomarkers and Mass Spectrometry Petroleomics

Author:
Santos Jandyson Machado; Santos Flávia Micaella Lemos; Eberlin Marcos Nogueira; Wisniewski Alberto
Source:
Energy & Fuels 2017 v.31 no.2 pp. 1208-1217
ISSN:
1520-5029
Subject:
alkanes; biodegradation; biomarkers; carbon; data collection; gas chromatography-mass spectrometry; ionization; isoprenoids; oils; organic matter; oxygen; petroleum; superoxide anion; temperature; Brazil
Abstract:
... The complex geochemical characteristics of crude oils can provide important information on oil generation, such as the input of organic matter and their depositional environments, also supporting exploration, extraction, and production. This work reports the first organic geochemical evaluation of oils from the first commercial Brazilian onshore field (Carmópolis, Sergipe, Brazil) via both classi ...
DOI:
10.1021/acs.energyfuels.6b02362

88. Advanced scripting for the automated profiling of two-dimensional gas chromatography-time-of-flight mass spectrometry data from combustion aerosol

Author:
Benedikt A. Weggler; Thomas Gröger; Ralf Zimmermann
Source:
Journal of chromatography 2014 v.1364 pp. 241-248
ISSN:
0021-9673
Subject:
aerosols; algorithms; alkanes; automation; benzene; comprehensive two-dimensional gas chromatography; esters; ethers; fuel combustion; fuels; gas chromatography; mass spectrometry; particulate emissions; particulates; polycyclic aromatic hydrocarbons; screening; volatile organic compounds
Abstract:
... Multidimensional gas chromatography is an appropriate tool for the non-targeted and comprehensive characterisation of complex samples generated from combustion processes. Particulate matter (PM) emission is composed of a large number of compounds, including condensed semi-volatile organic compounds (SVOCs). However, the complex amount of information gained from such comprehensive techniques is ass ...
DOI:
10.1016/j.chroma.2014.08.091

89. Advanced treatment of acrylic fiber manufacturing wastewater with a combined microbubble-ozonation/ultraviolet irradiation process

Author:
Tianlong Zheng; Tao Zhang; Qunhui Wang; Yanli Tian; Zhining Shi; Nicholas Smale; Banghua Xu
Source:
RSC advances 2015 v.5 no.95 pp. 77601-77609
ISSN:
2046-2069
Subject:
alkanes; aromatic compounds; biochemical oxygen demand; biodegradability; hydroxyl radicals; irradiation; manufacturing; ozone; pH; ultraviolet radiation; wastewater
Abstract:
... This work investigated the effectiveness of a combination of microbubble-ozonation and ultraviolet (UV) irradiation for the treatment of secondary wastewater effluent of a wet-spun acrylic fiber manufacturing plant. Under reactor condition (ozone dosage of 48 mg L⁻¹, UV fluence rate of 90 mW cm⁻², initial pH of 8.0, and reaction time of 120 min), the biodegradability (represented as BOD₅/CODcᵣ) of ...
DOI:
10.1039/c5ra14575a

90. Advanced treatment of refractory organic pollutants in petrochemical industrial wastewater by bioactive enhanced ponds and wetland system

Author:
Shuo Liu; Qiusha Ma; Baozhen Wang; Jifu Wang; Ying Zhang
Source:
Ecotoxicology 2014 v.23 no.4 pp. 689-698
ISSN:
0963-9292
Subject:
alkanes; aromatic hydrocarbons; bacteria; biodiversity; chemical oxygen demand; denaturing gradient gel electrophoresis; pollutants; ponds; wastewater
Abstract:
... A large-scale combined ponds-wetland system was applied for advanced treatment of refractory pollutants in petrochemical industrial wastewater. The system was designed to enhance bioactivity and biological diversity, which consisted of anaerobic ponds (APs), facultative ponds (FPs), aerobic pond and wetland. The refractory pollutants in the petrochemical wastewater to be treated were identified as ...
DOI:
10.1007/s10646-014-1215-9
PubMed:
24578265

91. Advances in One-Pot Synthesis through Borrowing Hydrogen Catalysis

Author:
Avelino Corma; Javier Navas; Maria J. Sabater
Source:
Chemical reviews 2018 v.118 no.4 pp. 1410-1459
ISSN:
1520-6890
Subject:
Lewis acids; alcohols; alkanes; amines; carbon; catalytic activity; dehydrogenation; hydrogen; hydrogenation; synthesis
Abstract:
... The borrowing hydrogen (BH) principle, also called hydrogen auto-transfer, is a powerful approach which combines transfer hydrogenation (avoiding the direct use of molecular hydrogen) with one or more intermediate reactions to synthesize more complex molecules without the need for tedious separation or isolation processes. The strategy which usually relies on three steps, (i) dehydrogenation, (ii) ...
DOI:
10.1021/acs.chemrev.7b00340

92. Advances in Studies on Toxic Effects of Short-Chain Chlorinated Paraffins (SCCPs) and Characterization of Environmental Pollution in China

Author:
Xin Zheng; Qianhang Sun; Shuping Wang; Xiaoqian Li; Peiyuan Liu; Zhenguang Yan; Xianghui Kong; Juntao Fan
Source:
Archives of environmental contamination and toxicology 2020 v.78 no.4 pp. 501-512
ISSN:
0090-4341
Subject:
air; alkanes; aquatic ecosystems; aquatic organisms; bioaccumulation; carcinogenicity; exposure pathways; mammals; pollution; risk assessment; soil; toxicology; China
Abstract:
... Short-chain chlorinated paraffins (SCCPs) were included in the Stockholm Convention in 2017. SCCPs have persistence, bioaccumulation, long-range environmental mobility and biological toxicity, significant toxicity to aquatic organisms, and potential carcinogenicity. Little study was on the progress research on the current environmental pollution in China. We reviewed the pollution conditions of SC ...
DOI:
10.1007/s00244-020-00723-0

93. Advances in synthetic biology of oleaginous yeast Yarrowia lipolytica for producing non-native chemicals

Author:
Farshad Darvishi; Mehdi Ariana; Eko Roy Marella; Irina Borodina
Source:
Applied microbiology and biotechnology 2018 v.102 no.14 pp. 5925-5938
ISSN:
0175-7598
Subject:
Yarrowia lipolytica; alkanes; biodegradability; biofuels; campesterol; case studies; cosmetics; dicarboxylic acids; drugs; enzymes; fatty alcohols; gene editing; metabolites; odors; oils; pigments; plastics; polyhydroxyalkanoates; polyunsaturated fatty acids; surfactants; synthetic biology; yeasts
Abstract:
... Oleaginous yeast Yarrowia lipolytica is an important industrial host for the production of enzymes, oils, fragrances, surfactants, cosmetics, and pharmaceuticals. More recently, improved synthetic biology tools have allowed more extensive engineering of this yeast species, which lead to the production of non-native metabolites. In this review, we summarize the recent advances of genome editing too ...
DOI:
10.1007/s00253-018-9099-x

94. Advances in the Catalytic Production and Utilization of Sorbitol

Author:
Zhang Jun; Li Ji-biao; Wu Shu-Bin; Liu Ying
Source:
Industrial & Engineering Chemistry Research 2013 v.52 no.34 pp. 11799-11815
ISSN:
1520-5045
Subject:
alkanes; catalysts; catalytic activity; chemical industry; engineering; hydrogen; magnetism; microwave treatment; renewable energy sources; sorbitol; value added
Abstract:
... Recently, research on the production and transformation of sorbitol has become exciting in chemical industry and in catalysis studies for its broad applications. It opens up a new path for achieving sustainable energy supply and chemicals production. Here we mainly review the catalytic routes for the synthesis of sorbitol and conversion of sorbitol into high value-added compounds such as lower alc ...
DOI:
10.1021/ie4011854

95. Advances in the gas chromatographic determination of persistent organic pollutants in the aquatic environment

Author:
van Leeuwen, S.P.J.; de Boer, J.
Source:
Journal of chromatography 2008 v.1186 no.1-2 pp. 161-182
ISSN:
0021-9673
Subject:
alkanes; aquatic environment; chemists; detection limit; flame retardants; fractionation; furans; gas chromatography; infrastructure; lipids; mass spectrometry; persistent organic pollutants; polybrominated diphenyl ethers; polychlorinated biphenyls; polychlorinated dibenzodioxins; quality control; sulfur; temperature; toxaphene
Abstract:
... Environmental chemists have been challenged for over 30 years to analyse complex mixtures of halogenated organic pollutants like polychlorinated biphenyls (PCBs), polychlorinated alkanes (PCAs), polybrominated diphenyl ethers (PBDEs) and polychlorinated dibenzo-p-dioxins and polychlorinated furans (PCDD/Fs). Gas chromatography (GC) often proved to be the method of choice because of its high resolu ...
DOI:
10.1016/j.chroma.2008.01.044

96. Advances in the understanding of cuticular waxes in Arabidopsis thaliana and crop species

Author:
Saet Buyl Lee; Mi Chung Suh
Source:
Plant cell reports 2015 v.34 no.4 pp. 557-572
ISSN:
0721-7714
Subject:
Arabidopsis thaliana; Camelina sativa; Eutrema; Medicago sativa; Medicago truncatula; aerial parts; alcohols; aldehydes; alkanes; biosynthesis; corn; crops; cutin; epicuticular wax; gas exchange; genes; hydrophobicity; ketones; polyesters; rapeseed; rice; tomatoes; very long chain fatty acids; wheat
Abstract:
... The aerial parts of plants are covered with a cuticle, a hydrophobic layer consisting of cutin polyester and cuticular waxes that protects them from various environmental stresses. Cuticular waxes mainly comprise very long chain fatty acids and their derivatives such as aldehydes, alkanes, secondary alcohols, ketones, primary alcohols, and wax esters that are also important raw materials for the p ...
DOI:
10.1007/s00299-015-1772-2

97. Advancing Sustainable Manufacturing through a Heterogeneous Cobalt Catalyst for Selective C–H Oxidation

Author:
Collom Samuel L.; Bloomfield Aaron J.; Anastas Paul T.
Source:
Industrial & Engineering Chemistry Research 2016 v.55 no.12 pp. 3308-3312
ISSN:
1520-5045
Subject:
alcohols; alkanes; alkenes; aromatic hydrocarbons; catalysts; chemical bonding; cobalt; engineering; manufacturing; oxidants; oxidation; phosphine; sustainable manufacturing
Abstract:
... An increasingly important chemical transformation that will be necessary as we move toward sustainable manufacturing is the oxidation of C–H bonds. Our reported robust heterogeneous cobalt water oxidation catalyst, formed from a metal carbonyl phosphine complex as precursor, is now shown to be active for the selective oxidation of C–H bonds. Of 10 oxidants tested, only Oxone and its oxidatively ac ...
DOI:
10.1021/acs.iecr.5b03674

98. Aeolian transport and deposition of carbonaceous aerosols over the Northwest Pacific Ocean in spring

Author:
Zilan Wu; Limin Hu; Tianfeng Guo; Tian Lin; Zhigang Guo
Source:
Atmospheric environment 2020 v.223 pp. 117209
ISSN:
1352-2310
Subject:
aerosols; alkanes; atmospheric deposition; emissions; lipids; marine environment; organic carbon; seawater; spring; vapor pressure; East Asia; East China Sea; Pacific Ocean
Abstract:
... The present study provides insight into the long-range transport of carbonaceous aerosols over the Northwest Pacific Ocean (NWP) based on marine aerosol samples collected onboard a research vessel in the spring of 2015. Organic carbon (OC) and elemental carbon (EC) concentrations showed maxima in proximity to land, with high levels also observed in advective air masses. The decoupled spatial varia ...
DOI:
10.1016/j.atmosenv.2019.117209

99. Aerobic Biodegradation Kinetics and Mineralization of Six Petrodiesel/Soybean-Biodiesel Blends

Author:
Yassine Mohamad H.; Wu Shuyun; Suidan Makram T.; Venosa Albert D.
Source:
Environmental Science & Technology 2013 v.47 no.9 pp. 4619-4627
ISSN:
1520-5851
Subject:
alkanes; biodegradation; biodiesel; biomass; biomineralization; diesel fuel; fatty acid methyl esters; toluene; xylene
Abstract:
... The aerobic biodegradation kinetics and mineralization of six petrodiesel/soybean-biodiesel blends (B0, B20, B40, B60, B80, and B100), where B100 is 100% biodiesel, were investigated by acclimated cultures. The fatty acid methyl esters (FAMEs) of biodiesel were found to undergo rapid abiotic transformation in all experiments. The C10–C21 n-alkanes of petrodiesel were metabolized at significantly h ...
DOI:
10.1021/es400360v

100. Aerobic Biodegradation of Liquid Motor Fuels under Extreme Acidic Conditions

Author:
A. E. Ivanova; A. Yu. Kanat’eva; A. A. Kurganov
Source:
Microbiology 2019 v.88 no.3 pp. 300-308
ISSN:
0026-2617
Subject:
Mycobacterium; alkanes; aromatic compounds; aviation; bacteria; biodegradation; biodiesel; carbon; diesel fuel; energy; fatty acids; isoprenoids; kerosene; liquids; methyl ethers; oils; pH; petroleum; rapeseed; winter
Abstract:
... Biodegradation of liquid petroleum motor fuels and fuel mixtures containing biodiesel fuel (methyl ethers of rapeseed fatty acids) by aerobic acidophilic actinobacteria Mycobacterium sp. AGS₁₀ was studied. Strain AGS₁₀ was found to be able to grow on aviation kerosene Jet A-1 as the sole carbon and energy source under highly acidic conditions. After 21 days of cultivation at 30°C and pH 2.5, bacte ...
DOI:
10.1134/S0026261719030044