U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Publication year rev 7987-2013 Remove constraint Publication year rev: 7987-2013 Subject term adsorption Remove constraint Subject term: adsorption Subject term energy Remove constraint Subject term: energy
Start Over

Search

288  Search Results

« Previous | 1 - 50 of 288 |
Number of results to display per page

Search Results

1. A Theoretical Study of Water Adsorption and Decomposition on Low-Index Spinel ZnGa2O4 Surfaces: Correlation between Surface Structure and Photocatalytic Properties

Author:
Jia Chuanyi; Fan Weiliu; Yang Fei; Zhao Xian; Sun Honggang; Li Pan; Liu Li
Source:
Langmuir 2013 v.29 no.23 pp. 7025-7037
ISSN:
1520-5827
Subject:
adsorption; catalysts; dissociation; energy; hydrogen bonding; hydrogen production; methodology; oxygen; photocatalysis
Abstract:
... Water adsorption and decomposition on stoichiometrically perfect and oxygen vacancy containing ZnGa₂O₄ (100), (110), and (111) surfaces were investigated through periodic density functional theory (DFT) calculations. The results demonstrated that water adsorption and decomposition are surface-structure-sensitive processes. On a stoichiometrically perfect surface, the most stable molecular adsorpti ...
DOI:
10.1021/la4014812

2. A density functional theory study on the interaction mechanism between H₂S and the α-Fe₂O₃(0001) surface

Author:
Jiajia Song; Xiaoqi Niu; Lixia Ling; Baojun Wang
Source:
Fuel processing technology 2013 v.115 no. pp. 26-33
ISSN:
0378-3820
Subject:
adsorption; dehydrogenation; energy; hydrogen; hydrogen sulfide; iron; models; sulfur
Abstract:
... The interaction mechanism of H₂S and the α-Fe₂O₃(0001) surface during the desulfurization has been investigated by the density functional theory (DFT) method within a periodic slab model. Adsorptions of H₂S, SH, S and H on the α-Fe₂O₃(0001) surface have been initially examined. Our results show that H₂S, SH and atomic S favorably adsorb on the top of Fe site, and atomic H lies on the top of O site ...
DOI:
10.1016/j.fuproc.2013.04.003

3. A hybrid multi-effect distillation and adsorption cycle

Author:
Kyaw Thu; Young-Deuk Kim; Gary Amy; Won Gee Chun; Kim Choon Ng
Source:
Applied energy 2013 v.104 no. pp. 810-821
ISSN:
0306-2619
Subject:
adsorbents; adsorption; desalination; distillation; energy; equations; heat; models; silica gel; sorption isotherms; temperature; vapors
Abstract:
... This paper describes the development of a simple hybrid desalination system of a Multi-Effect Distillation (MED) and an adsorption (AD) cycle operating at sub-atmospheric pressures and temperatures. By hybridizing the conventional MED with an AD cycle, there is a symbiotic enhancement of performances of both cycles. The performance enhancement is attributed to (i) the cascade of adsorbent’s regene ...
DOI:
10.1016/j.apenergy.2012.12.007

4. A microbial fuel cell driven capacitive deionization technology for removal of low level dissolved ions

Author:
Cuijie Feng; Chia-Hung Hou; Shaohua Chen; Chang-Ping Yu
Source:
Chemosphere 2013 v.91 pp. 623-628
ISSN:
0045-6535
Subject:
electricity; energy recovery; aqueous solutions; energy; ions; organic matter; wastewater treatment; microorganisms; sodium chloride; microbial fuel cells; wastewater; adsorption
Abstract:
... The microbial fuel cell (MFC) is an emerging technology, which uses exoelectrogenic microorganisms to oxidize organic matter in the wastewater to produce electricity. However, the low energy output limits its application in practice. Capacitive deionization (CDI), an electrochemically controlled method for deionization by the adsorption of ions in the electrical double layer region at an electrode ...
DOI:
10.1016/j.chemosphere.2012.12.068
PubMed:
23375820

5. A new adsorbent for boron removal from aqueous solutions

Author:
Joanna Kluczka; Teofil Korolewicz; Maria Zołotajkin; Wojciech Simka; Malwina Raczek
Source:
Environmental technology 2013 v.34 no.11 pp. 1369-1376
ISSN:
1479-487X
Subject:
adsorbents; adsorption; aqueous solutions; batch systems; boron; energy; enthalpy; entropy; environmental technology; freshwater; heat production; models; pH; temperature; zirconium
Abstract:
... A new adsorbent based on natural clinoptilolite and amorphous zirconium dioxide (ZrO₂) was prepared for the uptake of boron from fresh water. The sorption behaviour of this adsorbent for boron was investigated using a batch system and found to obey Langmuir, Freundlich and Dubinin–Radushkevich (D–R) isotherm models. The ZrO₂ loading level, pH, temperature, contact time, initial boron concentration ...
DOI:
10.1080/09593330.2012.750380

6. A simple thermodynamic approach to predict responses from polymer-coated quartz crystal microbalance sensors exposed to organic vapors

Author:
P. Palmas; J. Klingenfus; B. Vedeau; E. Girard; P. Montmeat; L. Hairault; C.M. Pradier; C. Méthivier
Source:
Talanta 2013 v.115 no. pp. 616-623
ISSN:
0039-9140
Subject:
Gibbs free energy; adsorption; chemical structure; diffusivity; drugs; energy; enthalpy; entropy; explosives; mixing; nuclear magnetic resonance spectroscopy; quartz; siloxanes; solubility; van der Waals forces; vapors
Abstract:
... As of lately, the demand for developing artificial sensors with improved capabilities for the detection of explosives, toxics or drugs has increased. Ideally, sensor devices should provide high sensitivity and give a response that is specific to a given target molecule without being influenced by possible interfering molecules in the atmosphere. These properties strongly depend on the structure of ...
DOI:
10.1016/j.talanta.2013.06.017

7. Ackee apple (Blighia sapida) seeds: a novel adsorbent for the removal of Congo Red dye from aqueous solutions

Author:
Olugbenga S. Bello; Manase Auta; Olumide B. Ayodele
Source:
Chemistry in ecology 2013 v.29 no.1 pp. 58-71
ISSN:
1029-0370
Subject:
Blighia sapida; adsorbents; adsorption; apples; aqueous solutions; energy; enthalpy; entropy; hydrochloric acid; models; pH; scanning electron microscopy; seeds; sorption isotherms; titration
Abstract:
... The ability of ackee apple (AA) seeds to remove Congo Red (CR) dye from aqueous solution was investigated. AA was characterised using thermo gravimetric analyser, scanning electron microscopy, Braunauer Emmett Teller, pHₚzc, elemental analysis and Boehm titration. The effects of operational parameters such as adsorbent dosage, contact time, initial dye concentration and solution pH were studied in ...
DOI:
10.1080/02757540.2012.686606

8. Adhesion of quantum dots-induced membrane damage of Escherichia coli

Author:
Lu Lai; Chen Lin; Chang-Qing Xiao; Zi-Qiang Xu; Xiao-Le Han; Li Fu; Dong-Wei Li; Ping Mei; Feng-Lei Jiang; Qing-Lian Guo; Yi Liu
Source:
Journal of colloid and interface science 2013 v.389 no.1 pp. 61-70
ISSN:
0021-9797
Subject:
Escherichia coli; absorbance; acetylcysteine; adsorption; atomic absorption spectrometry; bacterial adhesion; cadmium; calorimetry; cell suspension culture; energy; glutathione; hydrodynamics; hydrophobicity; ligands; membrane fluidity; permeability; toxicity; transmission electron microscopy
Abstract:
... The toxicity of CdTe QDs modified with three different ligands, namely mercaptopropionic acid (MPA), N-acetyl-l-cysteine (NAC), and glutathione (GSH), were investigated via microcalorimetric, spectroscopic, and microscopic methods. The three ligand-modified QDs have nearly identical hydrodynamic size. The results of the calorimetric experiments and optical density measurements indicate that the QD ...
DOI:
10.1016/j.jcis.2012.09.002

9. Adsorption behavior of non-conventional eco-friendly tyrosine glycerol ether surfactants

Author:
C.D. Ampatzidis; E-M.A. Varka; T.D. Karapantsios
Source:
Colloids and Surfaces A: Physicochemical and Engineering Aspects 2013 v.438 pp. 104-111
ISSN:
0927-7757
Subject:
adsorption; aqueous solutions; carbon; colloids; diffusivity; energy; glycerol; hydrophobicity; loss modulus; micelles; models; storage modulus; surface tension; surfactants; tyrosine
Abstract:
... Due to the increasing demand for environmentally friendly surfactants, a novel non-conventional glycerol ether surfactant with 12 carbon atoms in the hydrophobic alkyl chain and the amino acid tyrosine in the hydrophilic head (TyrGE12) is synthesized. Measurements of dynamic surface tension by maximum bubble pressure tensiometry and drop profile tensiometry are carried out for alkali aqueous solut ...
DOI:
10.1016/j.colsurfa.2012.12.039

10. Adsorption characteristic of copper ions and its application in electroless nickel plating on a hydrogel-functionalized poly(vinyl chloride) plastic

Author:
Ming-Qiu Wang; Jun Yan; Shi-Guo Du; Jian-Wei Zeng; Wen-Ping Chang; Yi Guo; Hong-Guang Li
Source:
Journal of materials science 2013 v.48 no.20 pp. 7224-7237
ISSN:
0022-2461
Subject:
X-radiation; X-ray diffraction; X-ray photoelectron spectroscopy; adhesion; adsorption; catalysts; chitosan; copper; crosslinking; energy; glutaraldehyde; hydrocolloids; mixing; nanoparticles; nickel; pH; plastics; poly(vinyl chloride); polyethylene glycol; scanning electron microscopy; temperature
Abstract:
... A facile and palladium-free process for the electroless plating on poly(vinyl chloride) (PVC) plastic has been demonstrated. The process is based on the Cu adsorption capacity of semi-interpenetrating polymer network (semi-IPN) hydrogel chemically bonded to PVC surface via a simple and one-step approach that applying a chitosan/polyethylene glycol/glutaraldehyde system under mild stirring at room ...
DOI:
10.1007/s10853-013-7539-7

11. Adsorption isotherm, thermodynamics and kinetics studies of polyphenols separation from kiwifruit juice using adsorbent resin

Author:
Zhen Peng Gao; Zhi Fang Yu; Tian Li Yue; Siew Young Quek
Source:
Journal of food engineering 2013 v.116 no.1 pp. 195-201
ISSN:
0260-8774
Subject:
adsorption; astringency; energy; entropy; juices; kiwifruit; models; polyphenols; resins; sorption isotherms; temperature
Abstract:
... In this study, the adsorption characteristics of polyphenols in kiwifruit juice were investigated using AB-8 resin, with the aim to separate the polyphenols from kiwifruit juice to prevent astringency and browning during processing and storage. Results showed that the adsorption ability (qe) of the resin increased with an increase in temperature. The adsorption equilibrium was best described by th ...
DOI:
10.1016/j.jfoodeng.2012.10.037

12. Adsorption kinetic and equilibrium study for removal of mercuric chloride by CuCl2-impregnated activated carbon sorbent

Author:
Xin Li; Zhouyang Liu; Joo-Youp Lee
Source:
Journal of hazardous materials 2013 v.252-253 pp. 419-427
ISSN:
0304-3894
Subject:
activated carbon; adsorbents; adsorption; desorption; energy; mass transfer; mercuric chloride; models; sorption isotherms
Abstract:
... The intrinsic adsorption kinetics of mercuric chloride (HgCl2) was studied for raw, 4% and 10% CuCl2-impregnated activated carbon (CuCl2-AC) sorbents in a fixed-bed system. An HgCl2 adsorption kinetic model was developed for the AC sorbents by taking into account the adsorption kinetics, equilibrium, and internal and external mass transfer. The adsorption kinetic constants determined from the comp ...
DOI:
10.1016/j.jhazmat.2013.02.049

13. Adsorption of Biopolymers on SWCNT: Ordered Poly(rC) and Disordered Poly(rI)

Author:
Karachevtsev Maksym V.; Gladchenko Galina O.; Plokhotnichenko Alexander M.; Leontiev Victor S.; Karachevtsev Victor A.
Source:
Journal of physical chemistry 2013 v.117 no.9 pp. 2636-2644
ISSN:
1520-5207
Subject:
absorption; adsorption; biopolymers; carbon nanotubes; energy; hydrogen bonding; molecular dynamics; nitrogen; spectroscopy
Abstract:
... Polymer adsorption onto single-walled carbon nanotubes (SWCNTs) depends on its rigidity/flexibility. The adsorption properties of two related homopolynucleotides poly(rI) and poly(rC) but of different rigidities were compared, employing absorption spectroscopy and molecular dynamics simulation. It was shown that adsorption of the poor base stacked poly(rI) onto the nanotube is less effective than ...
DOI:
10.1021/jp311005y

14. Adsorption of Carbon Dioxide on 3-Aminopropyl-Triethoxysilane Modified Graphite Oxide

Author:
Hong Seok-Min; Kim Sung Hyun; Lee Ki Bong
Source:
Energy & Fuels 2013 v.27 no.6 pp. 3358-3363
ISSN:
1520-5029
Subject:
absorption; adsorbents; adsorption; carbon dioxide; desorption; energy; global warming; graphene; greenhouse gas emissions
Abstract:
... An awareness of the seriousness and symptoms of global warming is encouraging the development of technologies designed to reduce the emissions of CO₂, a representative greenhouse gas, which contributes to global warming. The reduction of CO₂ emissions has become a major environmental concern, and various methods such as absorption, adsorption, and membrane separation have been employed in CO₂ capt ...
DOI:
10.1021/ef400467w

15. Adsorption of H₂S molecules by cucurbit[7]uril: an ab initio vdW-DF study

Author:
Masoud Darvish Ganji; Nasim Danesh
Source:
RSC advances 2013 v.3 no.44 pp. 22031-22038
ISSN:
2046-2069
Subject:
Cucurbitaceae; adsorption; binding properties; encapsulation; energy; geometry; hydrogen sulfide; macrocyclic compounds; nanomaterials; van der Waals forces
Abstract:
... Among the cucurbit[n]urils, much attention has been devoted to CB[7] for its intermediary cavity size as well as the significant negative charge density of carbonyl-fringed portals which assists the binding of other species. Adsorption of hydrogen sulfide by CB[7] was studied using ab initio van der Waals density functional (vdW-DF) calculations, involving a full geometry optimization. The encapsu ...
DOI:
10.1039/c3ra41946k

16. Adsorption of Pb(II) from aqueous solution by silica-gel supported hyperbranched polyamidoamine dendrimers

Author:
Yuzhong Niu; Rongjun Qu; Changmei Sun; Chunhua Wang; Hou Chen; Chunnuan Ji; Ying Zhang; Xia Shao; Fanling Bu
Source:
Journal of hazardous materials 2013 v.244-245 pp. 276-286
ISSN:
0304-3894
Subject:
manganese; temperature; cobalt; aqueous solutions; energy; copper; lead; ion exchange; models; adsorbents; Fourier transform infrared spectroscopy; nickel; pH; silica gel; sorption isotherms; metal ions; adsorption
Abstract:
... The adsorption properties of silica-gel supported hyperbranched polyamidoamine dendrimers (SiO2-G0–SiO2-G4.0) have been investigated by batch method. The effect of pH of the solution, contact time, initial Pb(II) ion concentration, temperature and coexisting metal ions have been demonstrated. The results indicated that the optimum pH value was 5. Adsorption kinetics was found to follow the pseudo- ...
DOI:
10.1016/j.jhazmat.2012.11.042

17. Adsorption of Small Organic Molecules on Graphene

Author:
Lazar Petr; Karlický František; Jurečka Petr; Kocman Mikuláš; Otyepková Eva; Šafářová Klára; Otyepka Michal
Source:
Journal of the American Chemical Society 2013 v.135 no.16 pp. 6372-6377
ISSN:
1520-5126
Subject:
acetone; acetonitrile; adsorption; energy; enthalpy; ethanol; ethyl acetate; gas chromatography; graphene; hexane; mathematical theory; methylene chloride; models; molecular dynamics; physical phenomena; toluene
Abstract:
... We present a combined experimental and theoretical quantification of the adsorption enthalpies of seven organic molecules (acetone, acetonitrile, dichloromethane, ethanol, ethyl acetate, hexane, and toluene) on graphene. Adsorption enthalpies were measured by inverse gas chromatography and ranged from −5.9 kcal/mol for dichloromethane to −13.5 kcal/mol for toluene. The strength of interaction betw ...
DOI:
10.1021/ja403162r

18. Adsorption of TCDD with 1-butyl-3-methylimidazolium dicyanamide ionic liquid: A combined molecular dynamics simulation and quantum chemistry study

Author:
Wenxiao Pan; Yuanyuan Qi; Ruoxi Wang; Zhe Han; Dongju Zhang; Jinhua Zhan
Source:
Chemosphere 2013 v.91 pp. 157-164
ISSN:
0045-6535
Subject:
adsorption; energy; environmental science; gas emissions; hydrogen bonding; ionic liquids; molecular dynamics; polychlorinated dibenzofurans; tetrachlorodibenzo-p-dioxin; toxicity
Abstract:
... The effective abatement of flue gas emissions, especially polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), is one of the challenging issues in the field of environmental science currently. Imidazolium-based dicyanamide ionic liquids (ILs) were proposed to have potential in controlling the emissions of PCDD/Fs. However, the relevant mechanism at the molecular lev ...
DOI:
10.1016/j.chemosphere.2012.12.021
PubMed:
23336926

19. Adsorption of alcohol from water by poly(ionic liquid)s

Author:
Wentao Bi; Baokun Tang; Kyung Ho Row
Source:
Bioprocess and biosystems engineering 2013 v.36 no.6 pp. 651-658
ISSN:
1615-7591
Subject:
adsorption; anions; bioethanol; biomass; cations; distillation; energy; ethanol; fermentation; hydrophobicity; ionic liquids; polymers
Abstract:
... Bioethanol is used widely as a solvent and is considered a potential liquid fuel. Ethanol can be produced from biomass by fermentation, which results in low concentrations of alcohol in water. Conventional distillation is normally used to separate ethanol from water, but it required high energy consumption. Therefore, alternative approaches to this separation are being pursued. This study examined ...
DOI:
10.1007/s00449-012-0828-8

20. Adsorption of cysteine clusters on Au(110)−(1 × 1) surface: a DFT study

Author:
Luiza Buimaga-Iarinca; Cristian Morari
Source:
RSC advances 2013 v.3 no.15 pp. 5036-5044
ISSN:
2046-2069
Subject:
adsorption; cysteine; density functional theory; energy; gold; thiols
Abstract:
... Cysteine clusters of various sizes are investigated, as free structures and adsorbed on the Au(110)−(1 × 1) surface, by using density-functional theory. We analyse the adsorption of clusters in protonized and deprotonized forms. The presence of a trend for the values of bonding energy per adsorbed cysteine molecule as a function of cluster size is pointed out. To explain these findings we analyse ...
DOI:
10.1039/c3ra23214j

21. Adsorption of hydrogen sulphide on Metal-Organic Frameworks

Author:
Juan José Gutiérrez-Sevillano; Ana Martín-Calvo; David Dubbeldam; Sofía Calero; Said Hamad
Source:
RSC advances 2013 v.3 no.34 pp. 14737-14749
ISSN:
2046-2069
Subject:
adsorption; coordination compounds; copper; energy; hydrogen sulfide; models; vapor pressure
Abstract:
... Three new sets of interatomic potentials to model hydrogen sulphide (H₂S) have been fitted. One of them is a 3-sites potential (which we named 3S) and the other two are 5-sites potentials (which we named 5S and 5Sd). The molecular dipole of the 3S and 5S potentials is 1.43 D, which is the value usually employed for H₂S potentials, while the dipole of the 5Sd is the dipole measured experimentally f ...
DOI:
10.1039/c3ra41682h

22. Adsorption of lead ions from aqueous solution using porous carbon derived from rubber tires: Experimental and computational study

Author:
Tawfik A. Saleh; Vinod K. Gupta; Abdulaziz A. Al-Saadi
Source:
Journal of colloid and interface science 2013 v.396 no. pp. 264-269
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; alcohols; aqueous solutions; carbon; energy; heat treatment; hydrogen peroxide; ions; lead; models; nitric acid; oxidants; pH; rubber; tires; waste treatment
Abstract:
... Effective activated porous carbon (AC) was prepared by thermal treatment of waste rubber tires and was further activated using oxidizing agents like nitric acid and hydrogen peroxide. The tire-derived porous carbon was characterized by means of FTIR and X-ray diffraction. Careful analysis of the IR spectra of the synthesized AC reveals a number of bands centered at about 3400, 2350, 1710, 1650, an ...
DOI:
10.1016/j.jcis.2013.01.037

23. Adsorption of lead on multi-walled carbon nanotubes with different outer diameters and oxygen contents: Kinetics, isotherms and thermodynamics

Author:
Fei Yu; Yanqing Wu; Jie Ma; Chi Zhang
Source:
Journal of Environmental Sciences 2013 v.25 pp. 195-203
ISSN:
1001-0742
Subject:
adsorption; aqueous solutions; carbon nanotubes; correlation; energy; enthalpy; heavy metals; lead; oxygen; surface area
Abstract:
... The effects of different outer diameters and surface oxygen contents on the adsorption of heavy metals onto six types of multi-walled carbon nanotubes (MWCNTs) were investigated in an aqueous solution and lead was chosen as a model metal ion. The results indicated that the percentage removal and adsorption capacity of lead remarkably increased with decreasing outer diameter due to larger specific ...
DOI:
10.1016/S1001-0742(12)60023-0

24. Adsorption of nitrogen-heterocyclic compounds on bamboo charcoal: Kinetics, thermodynamics, and microwave regeneration

Author:
Peng Liao; Songhu Yuan; Wenjing Xie; Wenbiao Zhang; Man Tong; Kun Wang
Source:
Journal of colloid and interface science 2013 v.390 no.1 pp. 189-195
ISSN:
0021-9797
Subject:
Phyllostachys edulis; adsorbents; adsorption; aqueous solutions; bamboos; charcoal; combustion; energy; microwave radiation; models; nitrogen; pyridines; quinoline; sorption isotherms; temperature; thermodynamics; wastewater
Abstract:
... The adsorption kinetics and thermodynamics of nitrogen-heterocyclic compounds (NHCs), pyridine, indole and quinoline, in aqueous solutions on bamboo charcoal (BC), as well as the regeneration of spent BC by microwave radiation, are investigated. BC is produced by incomplete combustion of moso bamboo at high temperature and nitrogen atmosphere. Adsorption kinetics is analyzed using pseudo-first-ord ...
DOI:
10.1016/j.jcis.2012.09.037

25. Adsorption of sulfur dioxide using nickel oxide/carbon adsorbents produced by one-step pyrolysis method

Author:
Changzi Wu; Min Song; Baosheng Jin; Yimin Wu; Zhaoping Zhong; Yaji Huang
Source:
Journal of analytical and applied pyrolysis 2013 v.99 no. pp. 137-142
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; carbon; energy; energy-dispersive X-ray analysis; nickel; nitrates; pyrolysis; scanning electron microscopy; sewage sludge; sulfur dioxide; surface area; thermogravimetry
Abstract:
... In this study, we present the preparation of nickel oxide/carbon using sewage sludge as precursor and nickel nitrate as activating agent by one-step pyrolysis method. The nickel oxide could be self-assembled on the surface of sewage sludge based carbon materials. The surface modified carbon adsorbent was characterized by Brunauer–Emmett–Teller (BET) surface area, scanning electron microscopy (SEM) ...
DOI:
10.1016/j.jaap.2012.10.011

26. Adsorption performance of MCM-41 impregnated with amine for CO₂ removal

Author:
K.S.N. Kamarudin; N. Alias
Source:
Fuel processing technology 2013 v.106 no. pp. 332-337
ISSN:
0378-3820
Subject:
absorption; adsorbents; adsorption; carbon dioxide; ceramics; climate change; corrosion; cost effectiveness; energy; heat; polymers; secondary amines; solidification; solvents; temperature
Abstract:
... Carbon dioxide (CO₂) removal is increasingly important because a high CO₂ concentration in the atmosphere leads to global climate changes. In addition, the removal of CO₂ is also required in cryogenic plants to prevent CO₂ solidification. The removal can be achieved by using methods such as liquid absorption, solid adsorption cryogenic techniques, and selective diffusion through polymer, ceramic, ...
DOI:
10.1016/j.fuproc.2012.08.017

27. Adsorption studies of methylene blue and gentian violet on sugarcane bagasse modified with EDTA dianhydride (EDTAD) in aqueous solutions: Kinetic and equilibrium aspects

Author:
Karla Aparecida Guimarães Gusmão; Leandro Vinícius Alves Gurgel; Tânia Márcia Sacramento Melo; Laurent Frédéric Gil
Source:
Journal of environmental management 2013 v.118 pp. 135-143
ISSN:
0301-4797
Subject:
EDTA (chelating agent); Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; energy; gentian violet; methylene blue; models; pH; sorption isotherms; sugarcane bagasse
Abstract:
... In this study the adsorption of cationic dyes by modified sugarcane bagasse with EDTA dianhydride (EB) was examined using methylene blue (MB) and gentian violet (GV) as model compounds in aqueous single solutions. The synthesized adsorbent (EB) was characterized by FTIR, elemental analysis, and BET. The capacity of EB to adsorb dyes was evaluated at different contact times, pH values, and initial ...
DOI:
10.1016/j.jenvman.2013.01.017
PubMed:
23428463

28. Adsorption–desorption of metolachlor and atrazine in Indian soils: effect of fly ash amendment

Author:
Rakesh K. Ghosh; Neera Singh
Source:
Environmental monitoring and assessment 2013 v.185 no.2 pp. 1833-1845
ISSN:
0167-6369
Subject:
adsorption; alluvial soils; ash content; atrazine; desorption; energy; equations; fly ash; hysteresis; metolachlor; soil amendments
Abstract:
... The effect of two fly ashes as soil amendment on the adsorption–desorption of metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylphenyl)] and atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine) was studied in alluvial and laterite soils. The adsorption data for both the herbicides fitted well the Freundlich equation, and Freundlich adsorption coefficient (K f) incre ...
DOI:
10.1007/s10661-012-2671-4
PubMed:
22572800

29. Adsorptive removal of Cu(II) from aqueous solution and industrial effluent using natural/agricultural wastes

Author:
Biswajit Singha; Sudip Kumar Das
Source:
Colloids and Surfaces B: Biointerfaces 2013 v.107 pp. 97-106
ISSN:
0927-7765
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; agricultural wastes; aqueous solutions; batch systems; colloids; copper; diffusivity; energy; industrial effluents; industrial wastes; models; pH; temperature; thermodynamics; wastewater
Abstract:
... The potentiality of low cost natural/agricultural waste biomasses for the removal of Cu(II) ion from aqueous solution has been investigated in batch experiments. The effect of various physico-chemical parameters such as initial pH, initial Cu(II) concentration, adsorbent dosage, contact time and temperature has been studied. The optimum pH for adsorption was found to be 6 for all adsorbents used. ...
DOI:
10.1016/j.colsurfb.2013.01.060

30. Adsorptive separation studies of ethane–methane and methane–nitrogen systems using mesoporous carbon

Author:
Bin Yuan; Xiaofei Wu; Yingxi Chen; Jianhan Huang; Hongmei Luo; Shuguang Deng
Source:
Journal of colloid and interface science 2013 v.394 no. pp. 445-450
ISSN:
0021-9797
Subject:
adsorbents; adsorption; carbon; desorption; energy; gases; methane; nitrogen; transmission electron microscopy
Abstract:
... Adsorptive separations of C₂H₆/CH₄ and CH₄/N₂ binary mixtures are of paramount importance from the energy and environmental points of view. A mesoporous carbon adsorbent was synthesized using a soft template method and characterized with TEM, TGA, and nitrogen adsorption/desorption. Adsorption equilibrium and kinetics of C₂H₆, CH₄, and N₂ on the mesoporous carbon adsorbent were determined at 278, ...
DOI:
10.1016/j.jcis.2012.12.025

31. Aerobic biodegradation of the sulfonamide antibiotic sulfamethoxazole by activated sludge applied as co-substrate and sole carbon and nitrogen source

Author:
Elisabeth Müller; Walter Schüssler; Harald Horn; Hilde Lemmer
Source:
Chemosphere 2013 v.92 pp. 969-978
ISSN:
0045-6535
Subject:
activated sludge; mineralization; sulfamethoxazole; acetates; energy; antibiotics; nitrogen; dissolved organic carbon; biodegradation; ammonium nitrate; metabolites; adsorption
Abstract:
... Potential aerobic biodegradation mechanisms of the widely used polar, low-adsorptive sulfonamide antibiotic sulfamethoxazole (SMX) were investigated in activated sludge at bench scale. The study focused on (i) SMX co-metabolism with acetate and ammonium nitrate and (ii) SMX utilization when present as the sole carbon and nitrogen source. With SMX adsorption being negligible, elimination was primar ...
DOI:
10.1016/j.chemosphere.2013.02.070
PubMed:
23611245

32. An alkaline one-pot metathesis reaction to give a [Cu₃(BTC)₂] MOF at r.t., with free Cu coordination sites and enhanced hydrogen uptake properties

Author:
Sandra Loera-Serna; Lourdes López Núñez; Jorge Flores; Roxana López-Simeon; Hiram I. Beltrán
Source:
RSC advances 2013 v.3 no.27 pp. 10962-10972
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; ambient temperature; copper; cupric nitrate; desorption; differential scanning calorimetry; energy; ethanol; gas chromatography-mass spectrometry; hydrogen; methanol; nitrogen; physicochemical properties; sodium; solvents; thermogravimetry; ultrasonics
Abstract:
... A one-pot metathesis reaction between trimesic acid sodium salt and Cu(NO₃)₂ to yield [Cu₃(BTC)₂] (HKUST-1) in moderate to good yields, even at room temperature (r.t.) is presented, herein, for the first time. To determine if the basic nature of the metathesis reaction afforded any new physicochemical properties to HKUST-1, three variables were monitored: a) the energy source either from i) ultras ...
DOI:
10.1039/c3ra40726h

33. An overview of developments in adsorption refrigeration systems towards a sustainable way of cooling

Author:
Biplab Choudhury; Bidyut Baran Saha; Pradip K. Chatterjee; Jyoti Prakas Sarkar
Source:
Applied energy 2013 v.104 no. pp. 554-567
ISSN:
0306-2619
Subject:
adsorbents; adsorption; air conditioning; climate change; commercialization; cooling; cooling systems; electricity; energy; heat; markets; nanotechnology; refrigeration; renewable energy sources; vapors; waste utilization
Abstract:
... Growing energy demand and global climate change are compelling reasons to look for effective utilisation of waste thermal energy and renewable energy resources. Fifteen percent of the electricity produced in the whole world is employed for refrigeration and air-conditioning processes of various kinds. Low-temperature heat operated environment-friendly adsorption cooling systems are emerging as via ...
DOI:
10.1016/j.apenergy.2012.11.042

34. Analysis of factors affecting visible and UV enhanced oxidation of dibenzothiophenes on sulfur-doped activated carbons

Author:
Mykola Seredych; Lucia Messali; Teresa J. Bandosz
Source:
Carbon 2013 v.62 no. pp. 356-364
ISSN:
0008-6223
Subject:
absorption; activated carbon; adsorption; diesel fuel; energy; free radicals; hydrogen sulfide; oxidation; oxygen; sulfur; temperature
Abstract:
... Commercial wood-based activated carbon was treated with hydrogen sulfide at 650 and 800°C to introduce sulfur to the carbon matrix. On the initial and S-doped samples adsorption of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel with equal molar concentrations of these species was measured at room temperature. The amount adsorbed increased with an increase in ...
DOI:
10.1016/j.carbon.2013.05.073

35. Antagonistic Effects of Humic Acid and Iron Oxyhydroxide Grain-Coating on Biochar Nanoparticle Transport in Saturated Sand

Author:
Wang Dengjun; Zhang Wei; Zhou Dongmei
Source:
Environmental Science & Technology 2013 v.47 no.10 pp. 5154-5161
ISSN:
1520-5851
Subject:
adsorption; biochar; carbon sequestration; coatings; ecosystem services; electrostatic interactions; energy; environmental factors; environmental impact; humic acids; iron oxyhydroxides; land application; models; nanoparticles; oxides; pollution; pyrolysis; sand; soil quality; temperature; wheat straw
Abstract:
... Biochar land application may result in multiple agronomic and environmental benefits (e.g., carbon sequestration, improving soil quality, and immobilizing environmental contaminants). However, our understanding of biochar particle transport is largely unknown in natural environments with significant heterogeneity in solid (e.g., patches of iron oxyhydroxide coating) and solution chemistry (e.g., t ...
DOI:
10.1021/es305337r

36. Anticancer loading and controlled release of novel water-compatible magnetic nanomaterials as drug delivery agents, coupled to a computational modeling approach

Author:
Pierre Dramou; Pengli Zuo; Hua He; Lien Ai Pham-Huy; Wenyue Zou; Deli Xiao; Chuong Pham-Huy; Theophilus Ndorbor
Source:
Journal of materials chemistry B 2013 v.1 no.33 pp. 4099-4109
ISSN:
2050-7518
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; ambient temperature; antibodies; biomimetics; drug delivery systems; energy; epirubicin; magnetic properties; magnetism; models; molecular imprinting; nanomaterials; polymers; scanning electron microscopy; solvents; synthesis; transmission electron microscopy
Abstract:
... The preparation, characterization and application of novel anticancer “epirubicin” (EPI) water-compatible magnetic molecularly imprinted polymers (M-MIPs) like artificial antibodies by computational design and chemical synthesis as a carrier for drug delivery is described herein. Two monomers: methacrylic acid (MAA) and methacrylamide (MAM) were selected by computational simulation from the four c ...
DOI:
10.1039/c3tb20502a

37. Application of Bacillus subtilis for reducing ash and sulfur in coal

Author:
M. A. Abdel-Khalek; A. A. El-Midany
Source:
Environmental earth sciences 2013 v.70 no.2 pp. 753-760
ISSN:
1866-6280
Subject:
Bacillus subtilis; adsorption; ash content; burning; coal; emissions; energy; gases; heavy metals; human health; researchers; respiratory tract diseases; sulfur; sulfur dioxide; toxicity
Abstract:
... The replacement of coal with other energy sources is due to the presence of harmful impurities such as sulfur that can lead to emission of harmful and corrosive gases such as H₂S and SO₂. These gases can affect the human health due to its toxicity. Also, the mineral matter (ash) can cause several types of respiratory system diseases due to the presence of heavy metals and formation of hazardous co ...
DOI:
10.1007/s12665-012-2163-4

38. Application of refuse fuels in a direct carbon fuel cell system

Author:
Seong Yool Ahn; Seong Yong Eom; Young Hoon Rhie; Yon Mo Sung; Cheor Eon Moon; Gyung Min Choi; Duck Jool Kim
Source:
Energy 2013 v.51 no. pp. 447-456
ISSN:
0360-5442
Subject:
X-ray photoelectron spectroscopy; adsorption; carbon; coal; electrochemistry; electrolytes; energy; fuel cells; gasification; mixing; nitrogen; oxygen; paper; plastics; solid wastes; surface area; temperature; thermal properties; thermogravimetry; viscosity
Abstract:
... Refuse derive fuel and refuse plastic/paper fuel were evaluated in a direct carbon fuel cell (DCFC) system as energy sources, and two different grades of coals were also employed for comparison. The maximum power density of refuse fuels was reached up to 43–62% level comparing to that of coals, despite their significantly low carbon content. Significant properties such as thermal reactivity, nitro ...
DOI:
10.1016/j.energy.2012.12.025

39. Application of zeolite-activated carbon macrocomposite for the adsorption of Acid Orange 7: isotherm, kinetic and thermodynamic studies

Author:
Chi Kim Lim; Hui Han Bay; Chin Hong Neoh; Azmi Aris; Zaiton Abdul Majid; Zaharah Ibrahim
Source:
Environmental science and pollution research international 2013 v.20 no.10 pp. 7243-7255
ISSN:
0944-1344
Subject:
Fourier transform infrared spectroscopy; X-radiation; activated carbon; adsorption; dyes; energy; high performance liquid chromatography; models; pH; phytotoxicity; scanning electron microscopy; sorption isotherms; surface area
Abstract:
... In this study, the adsorption behavior of azo dye Acid Orange 7 (AO7) from aqueous solution onto macrocomposite (MC) was investigated under various experimental conditions. The adsorbent, MC, which consists of a mixture of zeolite and activated carbon, was found to be effective in removing AO7. The MC were characterized by scanning electron microscopy (SEM), energy dispersive X-ray, point of zero ...
DOI:
10.1007/s11356-013-1725-7
PubMed:
23653315

40. Aqueous Dispersions of Exfoliated Molybdenum Disulfide for Use in Visible-Light Photocatalysis

Author:
Quinn Matthew D. J.; Ho Ngoc Han; Notley Shannon M.
Source:
ACS Applied Materials & Interfaces 2013 v.5 no.23 pp. 12751-12756
ISSN:
1944-8252
Subject:
adsorption; dispersions; energy; models; molybdenum disulfide; photocatalysis; photoluminescence; polymers
Abstract:
... Single and few layer molybdenum disulfide (MoS₂) was exfoliated from the bulk form through a liquid phase exfoliation procedure. Highly concentrated suspensions were prepared that were stabilized against reaggregation through adsorption of nonionic polymers to the sheet surface. These exfoliated particles showed strong photoluminescence at an energy of 1.97 eV which is in the visible-light region. ...
DOI:
10.1021/am404161k

41. Asphaltene Adsorption onto Acidic/Basic Metal Oxide Nanoparticles toward in Situ Upgrading of Reservoir Oils by Nanotechnology

Author:
Hosseinpour Negahdar; Khodadadi Abbas Ali; Bahramian Alireza; Mortazavi Yadollah
Source:
Langmuir 2013 v.29 no.46 pp. 14135-14146
ISSN:
1520-5827
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acidity; adsorption; calcium carbonate; centrifugation; electrostatic interactions; energy; enthalpy; ferric oxide; heat production; liquids; magnesium oxide; nanoparticles; nickel oxide; oils; oxidation; potassium hydroxide; sorption isotherms; transmission electron microscopy; tungsten oxide; ultraviolet-visible spectroscopy
Abstract:
... The effects of surface acidity and basicity of metal oxide nanoparticles on the thermodynamics of asphaltene adsorption were studied. Three different categories of metal oxides/salts with acidic (WO₃ and NiO), amphoteric (Fe₂O₃ and ZrO₂), and basic (MgO and CaCO₃) surfaces were synthesized, and their textural, structural, and acid–base properties were characterized. Asphaltenes were extracted from ...
DOI:
10.1021/la402979h

42. Assembly of Ag₃PO₄ nanocrystals on graphene-based nanosheets with enhanced photocatalytic performance

Author:
Song Bai; Xiaoping Shen; Hongwei Lv; Guoxing Zhu; Chunlin Bao; Yuexia Shan
Source:
Journal of colloid and interface science 2013 v.405 no. pp. 1-9
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; energy; graphene; graphene oxide; irradiation; methylene blue; nanocomposites; nanocrystals; nanosheets; photocatalysis; photocatalysts; transmission electron microscopy
Abstract:
... A facile fabrication of graphene oxide (GO)–Ag₃PO₄ nanocomposites has been achieved through a two-phase self-assembly process. The well anchoring of Ag₃PO₄ nanocrystals (NCs) on the GO nanosheets was confirmed by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), and Raman spectra. The significantly enhanced photocatalytic activity of the co ...
DOI:
10.1016/j.jcis.2013.05.023

43. Atom Economical Green Synthesis of Chloromethyl-1,3-dioxolanes from Epichlorohydrin Using Supported Heteropolyacids

Author:
Yadav Ganapati D.; Surve Prasad S.
Source:
Industrial & Engineering Chemistry Research 2013 v.52 no.18 pp. 6129-6137
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acetone; adrenergic receptors; adsorption; antagonists; catalysts; clay; cycloaddition reactions; energy; engineering; epichlorohydrins; glycerol; industry; kinetics; plasticizers; polymerization; reaction mechanisms; scanning electron microscopy; temperature; tranquilizers
Abstract:
... Bioglycerol can be valorized to different products, among which epichlorohydrin is an important intermediate used in a variety of industries. Chloromethyl-1,3-dioxolane is one of the important pharmaceutical intermediates, which is obtained by cycloaddition reactions of epichlorohydrin with ketones. Chloromethyldioxolane derivatives are used as tranquilizers, as plasticizers, as a new class of adr ...
DOI:
10.1021/ie400307v

44. Atomic-scale interactions of the interface between chitosan and Fe₃O₄

Author:
Linhui Qiang; Zhanfeng Li; Tianqi Zhao; Shuangling Zhong; Hongyan Wang; Xuejun Cui
Source:
Colloids and surfaces 2013 v.419 no. pp. 125-132
ISSN:
0927-7757
Subject:
adsorption; chitosan; colloids; energy; hydrogen; hydrogen bonding; iron oxides; molecular dynamics; nitrogen; oxygen; polymers; probability
Abstract:
... Molecular dynamics (MD) simulation was employed to study chitosan adsorption on different Fe₃O₄ crystallographic planes at the atomic level. The interaction energy between chitosan and different Fe₃O₄ surfaces indicates that the interaction of chitosan and Fe₃O₄ (111) surfaces is stronger than that of (110) and (001) surfaces. The concentration profiles show that hydrogen and amino groups of chito ...
DOI:
10.1016/j.colsurfa.2012.11.055

45. Au core Pd/Pt shell in trimetallic Au/Pd/Pt colloidal nanocomposites – Physicochemical characterization study

Author:
B. Loganathan; B. Karthikeyan
Source:
Colloids and Surfaces A: Physicochemical and Engineering Aspects 2013 v.436 pp. 944-952
ISSN:
0927-7757
Subject:
Raman spectroscopy; X-radiation; X-ray photoelectron spectroscopy; adsorption; atomic force microscopy; colloids; cysteine; energy; energy-dispersive X-ray analysis; gold; irradiation; nanocomposites; polymers; scanning electron microscopy; transmission electron microscopy
Abstract:
... This work demonstrates for the first time of synthesizing Pt containing trimetallic Au/Pd/Pt colloidal nanocomposites using polymer capping through microwave (MW) irradiation method. The resulting trimetallic nanocomposite were characterized by high-resolution transmission electron microscopy (HR-TEM), high-resolution scanning electron microscopy (HR-SEM), energy dispersive X-ray spectroscopy (EDX ...
DOI:
10.1016/j.colsurfa.2013.08.035

46. Batch and continuous flow studies of adsorptive removal of Cr(VI) by adapted bacterial consortia immobilized in alginate beads

Author:
Jastin Samuel; Mrudula Pulimi; Madona L. Paul; Arun Maurya; Natarajan Chandrasekaran; Amitava Mukherjee
Source:
Bioresource technology 2013 v.128 pp. 423-430
ISSN:
0960-8524
Subject:
Acinetobacter junii; Bacillus subtilis; Escherichia coli; X-radiation; adsorption; bacteria; desorption; energy; groundwater; pH; spectroscopy; wastewater
Abstract:
... The adsorptive removal of Cr(VI) by alginate beads containing Cr(VI)-adapted Acinetobacter junii, Escherichia coli and Bacillus subtilis in batch and continuous packed bed column reactors was investigated. Under optimized conditions (pH 3.0; contact time, 180min; 30°C; initial Cr(VI) concentration of 100mg/L), 65.86mg/g adsorption capacity was recorded in the batch study. When an adsorbent dosage ...
DOI:
10.1016/j.biortech.2012.10.116
PubMed:
23201524

47. Batch removal of hazardous azo dye Bismark Brown R using waste material hen feather

Author:
Jyoti Mittal; Vijay Thakur; Alok Mittal
Source:
Ecological engineering 2013 v.60 pp. 249-253
ISSN:
0925-8574
Subject:
adsorbents; adsorption; azo dyes; energy; entropy; feathers; hens; models; pH; sorption isotherms; temperature
Abstract:
... The adsorption of dye Bismark Brown R has been investigated at 30, 40 and 50°C temperatures. Various essential factors affecting the extent of adsorption like, adsorbent dosage, dye concentration, pH and contact time have been analyzed. On the basis of Langmuir adsorption isotherms feasibility of the ongoing adsorption has been ascertained and thermodynamic parameters have been calculated. Attempt ...
DOI:
10.1016/j.ecoleng.2013.07.025

48. Behind adhesion of uranyl onto montmorillonite surface: A molecular dynamics study

Author:
W. Yang; A. Zaoui
Source:
Journal of hazardous materials 2013 v.261 pp. 224-234
ISSN:
0304-3894
Subject:
adhesion; adsorption; clay; energy; models; molecular dynamics; montmorillonite; oxygen; thermodynamics; uranium; water
Abstract:
... We have performed molecular dynamics simulations to investigate the adsorption of radionuclide elements species onto substituted Montmorillonite (001) surface in the presence of different counterions. The structure and the dynamics of uranyl ion as well as its aquo, chloride ion, and carbonate complexes are analyzed. In addition, we have studied the surface energy between layered Montmorillonite s ...
DOI:
10.1016/j.jhazmat.2013.07.021

49. Bioactive Cellulose Nanofibrils for Specific Human IgG Binding

Author:
Zhang Yanxia; Carbonell Ruben G.; Rojas Orlando J.
Source:
Biomacromolecules 2013 v.14 no.12 pp. 4161-4168
ISSN:
1526-4602
Subject:
adsorption; atomic force microscopy; cellulose microfibrils; composite polymers; electron microscopy; energy; humans; hydrophilicity; image analysis; immunoglobulin G; polymerization; quartz
Abstract:
... Bioactive films were produced by conjugation of a short peptide onto modified cellulose nanofibrils (CNF). Specifically, a hydrophilic copolymer, poly(2-aminoethyl methacrylate hydrochloride-co-2-hydroxyethylmethacrylate) (poly(AMA-co-HEMA)), was grafted via surface initiated polymerization from an initiator coupled to CNF. The poly(AMA-co-HEMA) was used as a spacer and support layer for immobiliz ...
DOI:
10.1021/bm4007979

50. Biodegradation of decabromodiphenyl ether (BDE-209) by a metal resistant strain, Bacillus cereus JP12

Author:
Mang Lu; Zhong-Zhi Zhang; Xue-Jiao Wu; Yu-Xin Xu; Xiao-Li Su; Min Zhang; Jing-Xiu Wang
Source:
Bioresource technology 2013 v.149 pp. 8-15
ISSN:
0960-8524
Subject:
Bacillus cereus; adsorption; biodegradation; biosorption; carbon; energy; heavy metals; inoculum; pH; salts; surfactants
Abstract:
... A metal resistant bacterial strain, Bacillus cereus JP12, could use decabromodiphenyl ether (BDE-209) as the sole carbon and energy source for growth in mineral salt medium. Under the conditions of pH 6.0, 30°C, 150rpm and an inoculum of OD600=0.6, more than 88% of the initial BDE-209 (1mg/L) was degraded after 12days. The addition of appropriate surfactants and additional carbon sources could enh ...
DOI:
10.1016/j.biortech.2013.09.040
PubMed:
24084199