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1. Insight into the mechanisms of trichloronitromethane formation by vacuum ultraviolet: QSAR model and FTICR-MS analysis

Author:
Xiaojun Chen; Yangtao Wu; Weiqiu Zhang; Lingjun Bu; Shumin Zhu; Da Sheng; Shiqing Zhou; John C. Crittenden
Source:
Journal of environmental sciences (China) 2023 v.125 pp. 215-222
ISSN:
1001-0742
Subject:
byproducts,   etc   ; bicarbonates; chlorides; chlorination; chloropicrin; disinfection; models; nitrates; organic matter; pH; photolysis; quantitative structure-activity relationships; reactive nitrogen species; risk; toxicity; China;     Show all 16 Subjects
Abstract:
... Vacuum ultraviolet (VUV) photolysis is recognized as an environmental-friendly treatment process. Nitrate (NO₃⁻) and natural organic matter (NOM) are widely present in water source. We investigated trichloronitromethane (TCNM) formation during chlorination after VUV photolysis, because TCNM is an unregulated highly toxic disinfection byproduct. In this study: (1) we found reactive nitrogen species ...
DOI:
10.1016/j.jes.2021.11.023

2. Quantitation study on VOC emissions and their reduction potential for coking industry in China: Based on in-situ measurements on treated and untreated plants

Author:
Long Cheng; Wei Wei; Chengzhou Zhang; Xiuli Xu; Kechang Sha; Qingbo Meng; Yu Jiang; Shuiyuan Cheng
Source:
Science of the total environment 2022 v.836 pp. 155466
ISSN:
0048-9697
Subject:
byproducts,   etc   ; environment; ovens; wastewater treatment;     Show all 4 Subjects
Abstract:
... Currently, the characteristics of volatile organic compounds (VOC) released from coking industry are still vague, and the widely used VOC emission factors (EFs) were still from the measurements of 1990s. Hence, focusing on coking industry, we conducted an in-situ measurement campaign in several typical plants, developed a set of VOC EFs for various release units, and estimated the current emission ...
DOI:
10.1016/j.scitotenv.2022.155466

3. Selective Oxidation of Alkylarenes to the Aromatic Ketones or Benzaldehydes with Water

Author:
Jin Zhang; Jihong Du; Chenyang Zhang; Kun Liu; Feifei Yu; Yongkun Yuan; Baogen Duan; Renhua Liu
Source:
Organic letters 2022 v.24 no.5 pp. 1152-1157
ISSN:
1523-7052
Subject:
byproducts,   etc   ; benzaldehyde; hydrogen; oxidation; oxygen;     Show all 5 Subjects
Abstract:
... Here a palladium-catalyzed oxidation method for converting alkylarenes into the aromatic ketones or benzaldehydes with water as the only oxygen donor is reported. This C–H bond oxidation functionalization does not require other oxidants and hydrogen acceptors, and H₂ is the only byproduct. The oxygen atom introduced into the products is confirmed to be from water by the MS analysis on the product ...
DOI:
10.1021/acs.orglett.1c04154

4. Two Steps to Bicyclo[4.2.0]octadienes from Cyclooctatetraene: Total Synthesis of Kingianic Acid A

Author:
Harshal D. Patel; Thomas Fallon
Source:
Organic letters 2022 v.24 no.12 pp. 2276-2281
ISSN:
1523-7052
Subject:
byproducts,   etc   ; biosynthesis; density functional theory;     Show all 3 Subjects
Abstract:
... Synthetic approaches to bicyclo[4.2.0]octadiene natural products frequently employ the synthesis of linear tetraenes to initiate a biosynthetic 8π/6π-electrocyclization cascade. This work forges a functionalized bicyclo[4.2.0]octadiene in two steps from cyclooctatetraene. The versatility of this method is demonstrated through natural product synthesis, including the first total synthesis of kingia ...
DOI:
10.1021/acs.orglett.2c00325

5. Behavior of Long-Chain Hydrocarbons at High Pressures and Temperatures

Author:
Abhisek Basu; Mainak Mookherjee; Ericka McMahan; Bianca Haberl; Reinhard Boehler
Source:
Journal of physical chemistry 2022 v.126 no.13 pp. 2530-2537
ISSN:
1520-5207
Subject:
byproducts,   etc   ; alkanes; physical chemistry; spectroscopy; temperature;     Show all 5 Subjects
Abstract:
... Although long-chain aliphatic hydrocarbons are documented in meteorites, their origin is poorly understood. A key question is whether they are pristine or a byproduct of terrestrial alteration? To understand if these long-chain hydrocarbons are indigenous, it will be important to explore their thermodynamic and mechanical stability at conditions experienced by extraterrestrial objects during atmos ...
DOI:
10.1021/acs.jpcb.1c10786

6. Characterization of humic substances recovered from the sewage sludge and validity of their removal from this waste

Author:
Justyna Michalska; Jolanta Turek-Szytow; Agnieszka Dudło; Joanna Surmacz-Górska
Source:
EFB bioeconomy journal 2022 v.2 pp. 100026
ISSN:
2667-0410
Subject:
byproducts,   etc   ; bioeconomics; sewage sludge; wastewater treatment;     Show all 4 Subjects
Abstract:
... Being an inevitable byproduct of the operation of wastewater treatment plants (WWTPs), sewage sludge may cause serious environmental problems. Thus, the proper treatment and management of such waste is currently a challenge of great importance. Due to the significant concentration of various contaminants, the direct application of sewage sludge in agriculture is often limited. Nevertheless, this w ...
DOI:
10.1016/j.bioeco.2022.100026

7. Recycling of silicon scraps by electron beam melting coupled with directional solidification and its mechanism of impurity removal

Author:
Pengting Li; Lian Dong; Zhiqiang Hu; Shiqiang Ren; Yi Tan; Dachuan Jiang; Xiaogang You
Source:
Journal of cleaner production 2022 v.355 pp. 131716
ISSN:
0959-6526
Subject:
byproducts,   etc   ; condensates; convection; silicon; solidification; temperature;     Show all 6 Subjects
Abstract:
... Silicon scraps, as the by-product of solar cells, have received more and more attention for its recycling with the continuing development of the cleaner production. However, hard particles and metal impurities in the silicon scraps are always difficult to remove deeply in industry. In this paper, electron beam melting coupled with directional solidification was used to purify silicon scraps and a ...
DOI:
10.1016/j.jclepro.2022.131716

8. Release characteristics of polycyclic aromatic hydrocarbons (PAHs) leaching from oil-based drilling cuttings

Author:
Bingxin Xie; Jihong Qin; Hui Sun; Shu Wang; Xin Li
Source:
Chemosphere 2022 v.291 pp. 132711
ISSN:
0045-6535
Subject:
byproducts,   etc   ; models; particle size; shale gas;     Show all 4 Subjects
Abstract:
... Drilling cuttings, the primary byproduct from the exploration and mining of shale gas, are potentially hazardous wastes that are associated with the serious depletion of land resources and environmental safety problems. In this work, the distribution of polycyclic aromatic hydrocarbons (PAHs) in oil-based residues of shale gas drilling cuttings was studied. Furthermore, a column leaching test was ...
DOI:
10.1016/j.chemosphere.2021.132711

9. A pyruvate-centered metabolic regulation mechanism for the enhanced expression of exogenous genes in Escherichia coli

Author:
Hongchen Zheng; Wenju Shu; Xiaoping Fu; Jiahan Wang; Yifan Yang; Jianyong Xu; Hui Song; Yanhe Ma
Source:
International journal of biological macromolecules 2022 v.203 pp. 58-66
ISSN:
0141-8130
Subject:
byproducts,   etc   ; Escherichia coli; acetates; energy; metabolism; transcriptomics;     Show all 6 Subjects
Abstract:
... A novel Escherichia coli efficient expression system had been constructed in our previous study. The system was based on the overexpression of endogenous genes prpD and malK to enhance the expression of exogenous genes. In this study, a general regulatory mechanism of prpD and malK was first revealed through transcriptome analysis and many experimental verifications. We surprisingly proved that ov ...
DOI:
10.1016/j.ijbiomac.2022.01.141

10. Rhodium(III)-Catalyzed Asymmetric 1,2-Carboamidation of Alkenes Enables Access to Chiral 2,3-Dihydro-3-benzofuranmethanamides

Author:
Wenwen Yu; Chao Chen; Lei Feng; Tianqi Xia; Chen Shi; Yaxi Yang; Bing Zhou
Source:
Organic letters 2022 v.24 no.9 pp. 1762-1767
ISSN:
1523-7052
Subject:
byproducts,   etc   ; alkenes; carbon dioxide; enantioselectivity; ligands; rhodium;     Show all 6 Subjects
Abstract:
... Through the initial screening and further rational design of chiral cyclopentadienyl ligands, a chiral rhodium-catalyzed enantioselective 1,2-carboamidation of aromatic tethered alkenes was developed, enabling the asymmetric preparation of various chiral 2,3-dihydro-3-benzofuranmethanamides with an enantioenriched all-carbon quaternary center at the β position of amide. This robust transformation ...
DOI:
10.1021/acs.orglett.2c00029

11. Dark septate endophytes: mutualism from by-products?

Author:
Anna L. Ruotsalainen; Miia Kauppinen; Piippa R. Wäli; Kari Saikkonen; Marjo Helander; Juha Tuomi
Source:
Trends in plant science 2022 v.27 no.3 pp. 247-254
ISSN:
1360-1385
Subject:
byproducts,   etc   ; endophytes; evolution; host plants; mutualism; saprotrophs; symbionts;     Show all 7 Subjects
Abstract:
... Plant roots are abundantly colonized by dark septate endophytic (DSE) fungi in virtually all ecosystems. DSE fungi are functionally heterogeneous and their relationships with plants range from antagonistic to mutualistic. Here, we consider the role of by-product benefits in DSE and other root–fungal symbioses. We compared host investments against symbiont-derived benefits for the host plant and ca ...
DOI:
10.1016/j.tplants.2021.10.001

12. Development and characterization of a controlled low-strength material produced using a ternary mixture of Portland cement, fly ash, and waste water treatment sludge

Author:
Lanh Si Ho; Bo-Jyun Jhang; Chao-Lung Hwang; Trong-Phuoc Huynh
Source:
Journal of cleaner production 2022 v.356 pp. 131899
ISSN:
0959-6526
Subject:
byproducts,   etc   ; cement; fly ash; sludge; toxicity; wastewater treatment;     Show all 6 Subjects
Abstract:
... Controlled low-strength material (CLSM), a widely used replacement for conventional compacted filling material, is self-leveling and self-compacting, currently used in many structural applications. The properties of a CLSM mixture made from cement, fly ash, and waste water treatment sludge (WTS) were examined in this study. The CLSM mixtures were prepared using several water-to-binder (w/b) ratios ...
DOI:
10.1016/j.jclepro.2022.131899

13. Individual variation in marine larval‐fish swimming speed and the emergence of dispersal kernels

Author:
Scott C. Burgess; Michael Bode; Jeffrey M. Leis; Luciano B. Mason
Source:
Oikos 2022 v.2022 no.3 pp. e08896
ISSN:
0030-1299
Subject:
byproducts,   etc   ; locomotion; models; ontogeny; parentage; phenotype; probability; wind;     Show all 8 Subjects
Abstract:
... Dispersal emerges as a consequence of how an individual's phenotype interacts with the environment. Not all dispersing individuals have the same phenotype, and variation among individuals can generate complex variation in the distribution of dispersal distances and directions. While active locomotion performance is an obvious candidate for a dispersal phenotype, its effects on dispersal are diffic ...
DOI:
10.1111/oik.08896

14. Photo-generated hydroxyl radicals contribute to the formation of halogen radicals leading to ozone depletion on and within polar stratospheric clouds surface

Author:
Xiaoyu Jiao; Congcong He; Huan Yu; Jun He; Chengjun Wang
Source:
Chemosphere 2022 v.291 pp. 132816
ISSN:
0045-6535
Subject:
byproducts,   etc   ; liquids; ozone; ozone depletion; solar radiation; stratosphere;     Show all 6 Subjects
Abstract:
... Polar stratospheric clouds (PSCs), of which the surface is a dynamic liquid water layer and might consist of aqueous HNO₃ and H₂O₂, is a well-known key meteorological condition contributing to the ozone hole in the polar stratosphere. PSCs has been considered to provide abundant surface for the heterogeneous reactions causing the formation of the Cl₂ and HOCl, which are further photolyzed into Cl ...
DOI:
10.1016/j.chemosphere.2021.132816

15. CO2-responsive membranes prepared by selective swelling of block copolymers and their behaviors in protein ultrafiltration

Author:
Chenxu Zhang; Jiemei Zhou; Xiangyue Ye; Zhuo Li; Yong Wang
Source:
Journal of membrane science 2022 v.641 pp. 119928
ISSN:
0376-7388
Subject:
byproducts,   etc   ; carbon dioxide; composite polymers; hydrophilicity; nanopores; porosity; ultrafiltration;     Show all 7 Subjects
Abstract:
... Due to the predominance of CO₂ as a new trigger with source abundance, non-toxicity, good reversibility and no byproduct accumulation compared to other triggers, CO₂-responsive membranes recently attract wide interest in stimuli-switchable separation. Here we report on the development of CO₂-responsive nanoporous membranes with poly(2-dimethylaminoethyl methacrylate)-block-polystyrene (PDMAEMA-b-P ...
DOI:
10.1016/j.memsci.2021.119928

16. Electrosynthesis of S-thiocarbamates with disulfides as a sulfur source

Author:
Xiaoying Liu; Tian-Cheng Cai; Dingyi Guo; Zhibin Nong; Yujie Yang; Qiang Li; Hongmei Jiang; Xingru Liu; Qing-Wen Gui
Source:
Chemical communications 2022 v.58 no.5 pp. 657-660
ISSN:
1364-548X
Subject:
byproducts,   etc   ; ambient temperature; disulfides; electrochemistry; electrolytes; electrosynthesis; hydrogen; sulfur;     Show all 8 Subjects
Abstract:
... An electrochemical oxidative synthesis of S-thiocarbamates by a carbamothioation reaction via a three-component coupling reaction (disulfide, water and isocyanide) is developed, which avoids the use of external oxidants and generates only hydrogen gas as the by-product. With NH₄I as the mediator and electrolyte, the desired S-thiocarbamates were obtained in good yields in an undivided cell at room ...
DOI:
10.1039/d1cc05399j

17. Synthesis of Glycerol Carbonate via Alcoholysis of Urea with Glycerol: Current Status and Future Prospects

Author:
Yuqiao Li; Huimin Liu; Ze Zheng; Zhu Fu; Dehua He; Qijian Zhang
Source:
Industrial & engineering chemistry process design and development 2022 v.61 no.17 pp. 5698-5711
ISSN:
1520-5045
Subject:
byproducts,   etc   ; alcoholysis; biodiesel; carbonates; glycerol; hydrotalcite; process design; urea;     Show all 8 Subjects
Abstract:
... Glycerol carbonate is an important chemical in industrial chemistry. It could be synthesized from glycerol, which is a byproduct in the biodiesel production process. Alcoholysis of urea with glycerol is a promising approach for the synthesis of glycerol carbonate. Catalysts are indispensable for the reaction of alcoholysis of urea with glycerol. Summarizing the developed catalysts and unraveling t ...
DOI:
10.1021/acs.iecr.2c00667

18. Variability of Constitutive Stilbenoid Levels and Profiles in Grape Cane (Vitis vinifera L.) Depending upon Variety and Clone, Location in the Vineyard, Pruning Time, and Vintage

Author:
Paul Besrukow; Jan Irmler; Joachim Schmid; Manfred Stoll; Peter Winterhalter; Ralf Schweiggert; Frank Will
Source:
Journal of agricultural and food chemistry 2022 v.70 no.14 pp. 4342-4352
ISSN:
1520-5118
Subject:
byproducts,   etc   ; Vitis vinifera; cultivars; food chemistry; grapes; stilbenoids; vineyards;     Show all 7 Subjects
Abstract:
... Stilbenoids in grape cane (Vitis vinifera L.) are bioactive compounds relevant for plant defense and the potential valorization of this byproduct. Our screening of grape cane from 102 varieties showed constitutive stilbenoid levels in a wide range (557–7748 mg/kg of dry weight). Analyses of genetically distinct clones of selected cultivars unraveled that intravarietal variability (e.g., cv. Riesli ...
DOI:
10.1021/acs.jafc.2c00276

19. Advancements in carbon fibre reinforced ultra-refractory ceramic composites: Effect of rare earth oxides addition

Author:
Antonio Vinci; Laura Silvestroni; Nicola Gilli; Luca Zoli; Diletta Sciti
Source:
Composites 2022 v.156 pp. 106858
ISSN:
1359-835X
Subject:
byproducts,   etc   ; ambient temperature; carbon; carbon fibers; ceramics; humidity; microstructure; slurries;     Show all 8 Subjects
Abstract:
... Continuous carbon fibre ceramic matrix composites capable of tolerating multiple thermal-shock cycles and resisting ablation are needed for aerospace and hypersonic systems. Carbon fibre around 50 vol% and ultra-refractory matrices are fundamental parameters. The influence of rare earth (RE) oxides on the microstructure and mechanical properties of carbon fibre-ZrB₂/SiC composites was investigated ...
DOI:
10.1016/j.compositesa.2022.106858

20. Comparison of separated and combined photodegradation and biofiltration technology for the treatment of volatile organic compounds: A critical review

Author:
Meng-Fei Han; Xu-Rui Hu; Yong-Chao Wang; Zhen Tong; Can Wang; Zhuo-Wei Cheng; Ke Feng; Miao-Miao Qu; Jian-Meng Chen; Ji-Guang Deng; Hsing-Cheng Hsi
Source:
Critical reviews in environmental science and technology 2022 v.52 no.8 pp. 1325-1355
ISSN:
1547-6537
Subject:
byproducts,   etc   ; biofiltration; biomass production; environmental science; human health; photolysis; toxicity;     Show all 7 Subjects
Abstract:
... The continuous emissions of volatile organic compounds (VOCs) from the industrial process cause serious environmental problems and pose a threat to human health. Photodegradation technology and biofiltration technology are efficient to control VOCs emissions. Recently, the researches on combined photodegradation and biofiltration technology have been attractive, since it could overcome the challen ...
DOI:
10.1080/10643389.2020.1854566