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1. The contribution of use -wear for stone tool identification at the Upper Paleolithic site Shuidonggou Locality 2, North China

Author:
Zhang, Peiqi; Zhang, Xiaoling; Zwyns, Nicolas; Peng, Fei; Guo, Jialong; Wang, Huiming; Gao, Xing
Source:
Quaternary international 2020 v.535 pp. 29-37
ISSN:
1040-6182
Subject:
byproducts,   etc   ; archaeology; models; China;     Show all 4 Subjects
Abstract:
... In North China, the archaeology of the Late Pleistocene is characterized by the persistence of flake-based lithic assemblages. Little is known about the use of stone tools and the reasons behind the success of a relatively simple core and flake technology are unclear. Most lithic studies in the region are traditionally based on a typological categorization of assemblages with the frequencies of co ...
DOI:
10.1016/j.quaint.2018.10.006

2. Formation kinetics of Maillard reaction intermediates from glycine–ribose system and improving Amadori rearrangement product through controlled thermal reaction and vacuum dehydration

Author:
Zhan, Huan; Tang, Wei; Cui, Heping; Hayat, Khizar; Hussain, Shahzad; Tahir, Muhammad Usman; Zhang, Songlin; Zhang, Xiaoming; Ho, Chi-Tang
Source:
Food chemistry 2020 v.311 pp. 125877
ISSN:
0308-8146
Subject:
byproducts,   etc   ; Maillard reaction; flavor; temperature;     Show all 4 Subjects
Abstract:
... Amadori rearrangement product (ARP) is an ideal flavor precursor. The formation kinetics of ARP from glycine–ribose system, 3-deoxyribosone (3-DR) and 1-deoxyribosone (1-DR) were evaluated, and then controlled thermal reaction (CTR) coupled with vacuum dehydration was proposed to improve the ARP yield. As key factors controlling the formation of byproducts, CTR temperature and time were optimized ...
DOI:
10.1016/j.foodchem.2019.125877

3. Analysis and optimization of reaction network based on the information flow diagram

Author:
Zhou, Leihao; Liu, Guilian; Hang, Peng; Li, Kaiyu
Source:
Journal of cleaner production 2020 v.258 pp. 120653
ISSN:
0959-6526
Subject:
byproducts,   etc   ; ethylene; space and time; temperature;     Show all 4 Subjects
Abstract:
... In the chemical reactor, there are a lot of uncertain reaction routes. A novel method is developed to analyze the effect of reactor parameters on reactions, identify the optimal one in terms of reducing the byproduct production based on the integration of the reaction network. The possible reaction paths are explored based on an algebraic analysis procedure. Information flow diagram (IFD) is const ...
DOI:
10.1016/j.jclepro.2020.120653

4. Advances in Food and Byproducts Processing towards a Sustainable Bioeconomy

Author:
Kopsahelis, Nikolaos; Kachrimanidou, Vasiliki
Source:
Foods 2019 v.8 no.9
ISSN:
2304-8158
Subject:
byproducts,   etc   ; bioeconomics; mineral resources;     Show all 3 Subjects
Abstract:
... The bioeconomy concept was initially focused on resource substitution, aiming to mitigate the depletion of fossil resources and confer an alternative approach for resource utilization [...] ...
DOI:
10.3390/foods8090425
PubMed:
31546953
PubMed Central:
PMC6769986

5. Peroxymonosulfate decomposition by homogeneous and heterogeneous Co: Kinetics and application for the degradation of acetaminophen

Author:
Rodríguez-Narvaez, Oscar M.; Rajapaksha, Ruwini D.; Ranasinghe, Mahinda I.; Bai, Xuelian; Peralta-Hernández, Juan Manuel; Bandala, Erick R.
Source:
Journal of environmental sciences (China) 2020 v.93 pp. 30-40
ISSN:
1001-0742
Subject:
byproducts,   etc   ; acetaminophen; cobalt; cobalt oxide; free radicals; hydroxyl radicals; kinetics;     Show all 7 Subjects
Abstract:
... Peroxymonosulfate (PMS) decomposition, hydroxyl radical (•OH) generation, and acetaminophen (ACT) degradation by the Co/PMS system using homogeneous (dissolved cobalt) and heterogeneous (suspended Co₃O₄) cobalt were assessed. For the homogeneous process, >99% PMS decomposition was observed and 10 mmol/L of •OH generation was produced using 5 mmol/L of PMS and different dissolved cobalt concentrati ...
DOI:
10.1016/j.jes.2020.03.002

6. Clopyralid degradation by AOPs enhanced with zero valent iron

Author:
Ferreira, M.B.; Barbosa Ferreira, M.; Souza, F.L.; Muñoz-Morales, M.; Sáez, C.; Cañizares, P.; Martínez-Huitle, C.A.; Rodrigo, M.A.
Source:
Journal of hazardous materials 2020 v.392 pp. 122282
ISSN:
0304-3894
Subject:
byproducts,   etc   ; clopyralid; electrolysis; iron; mineralization; photolysis; pollutants; pollution control;     Show all 8 Subjects
Abstract:
... Four different technologies have been compared (photolysis, ZVI + photolysis, electrolysis and ZVI + electrolysis) regarding the: (1) degradation of clopyralid, (2) extent of its mineralization, (3) formation of by-products and main reaction pathways. Results show that photolysis is the less efficient treatment and it only attains 5 % removal of the pollutant, much less than ZVI, which reaches 45 ...
DOI:
10.1016/j.jhazmat.2020.122282

7. A review on systematic approach for microbial enhanced oil recovery technologies: Opportunities and challenges

Author:
Saravanan, Anbalagan; Kumar, Ponnusamy Senthil; Vardhan, Kilaru Harsha; Jeevanantham, Sathasivam; Karishma, Suresh Babu; Yaashikaa, Ponnambalam Ragini; Vellaichamy, Parthasarathy
Source:
Journal of cleaner production 2020 v.258 pp. 120777
ISSN:
0959-6526
Subject:
byproducts,   etc   ; energy; ingredients; metabolites; microorganisms; models; oil fields; oils;     Show all 8 Subjects
Abstract:
... Oil is an indispensable ingredient for both food and energy in most of the countries. Due to insufficient extraction process reduces the average oil recovery rate up to 30%. Enhanced oil recovery (EOR) technologies including physical, chemical and biological methods are used to regain circumvent and lasting oil caught in supply after essential and optional recuperation techniques. Microbial Enhanc ...
DOI:
10.1016/j.jclepro.2020.120777

8. Unveiling the conceptual development of industrial symbiosis: Bibliometric analysis

Author:
Mallawaarachchi, Harshini; Sandanayake, Yasangika; Karunasena, Gayani; Liu, Chunlu
Source:
Journal of cleaner production 2020 v.258 pp. 120618
ISSN:
0959-6526
Subject:
byproducts,   etc   ; bibliometric analysis; industrial symbiosis; recycling; systematic review; wastes;     Show all 6 Subjects
Abstract:
... The concept of Industrial Symbiosis (IS) has been emerged under the umbrella of Industrial Ecology (IE), ensuring the reduction of the environmental deprivation through efficient use of waste and by-products. Over the years, the importance and the application of IS has gained momentous as its mutual benefits were recognised. Further, the research in IS has also been increasingly grown over the pas ...
DOI:
10.1016/j.jclepro.2020.120618

9. Hybrid event-, mechanism- and data-driven prediction of blast furnace gas generation

Author:
Sun, Wenqiang; Wang, Zihao; Wang, Qiang
Source:
Energy 2020 v.199 pp. 117497
ISSN:
0360-5442
Subject:
byproducts,   etc   ; chemical reactions; energy; furnaces; neural networks; pollution; prediction;     Show all 7 Subjects
Abstract:
... Blast furnace gas (BFG) is a byproduct gas and a significant energy source in integrated steelworks. Precise BFG generation prediction plays a pivotal role in site energy scheduling and management. However, it is difficult to accurately predict fluctuations in BFG generation due to the variable operational statuses and complex chemical reactions that occur inside the blast furnace, hindering effic ...
DOI:
10.1016/j.energy.2020.117497

10. Discerning the inefficacy of hydroxyl radicals during perfluorooctanoic acid degradation

Author:
Javed, Hassan; Lyu, Cong; Sun, Ruonan; Zhang, Danning; Alvarez, Pedro J.J.
Source:
Chemosphere 2020 v.247 pp. 125883
ISSN:
0045-6535
Subject:
byproducts,   etc   ; hydrogen peroxide; hydroxyl radicals; nitrobenzenes; oxidation; perfluorooctanoic acid; photolysis;     Show all 7 Subjects
Abstract:
... Perfluorooctanoic acid (PFOA) is a recalcitrant contaminant of emerging concern, and there is growing interest in advanced oxidation processes to degrade it. However, there is ambiguity in the literature about the efficacy of hydroxyl radicals (OH) for degrading PFOA. Here, we resolve this controversy by comparing PFOA degradation by UV photolysis (254 nm, 6 × 10⁻⁶ E/L.s) versus UV + H₂O₂, which p ...
DOI:
10.1016/j.chemosphere.2020.125883

11. The degradation mechanism of vanadium oxide-based aqueous zinc-ion batteries

Author:
Yang, Gongzheng; Li, Qian; Ma, Kaixuan; Hong, Cheng; Wang, Chengxin
Source:
Journal of materials chemistry A 2020 v.8 no.16 pp. 8084-8095
ISSN:
2050-7496
Subject:
byproducts,   etc   ; anodes; batteries; cathodes; electrochemistry; ions; vanadium; zinc;     Show all 8 Subjects
Abstract:
... Aqueous rechargeable zinc-ion batteries (ARZIBs) have recently become a hot topic due to their low cost and high safety. The current research is mainly focused on developing advanced cathode materials that have demonstrated satisfactory electrochemical performances with high capacity and rate capability. However, two prevalent problems are widely encountered: byproduct formation and poor cycling p ...
DOI:
10.1039/d0ta00615g

12. Critical review on the mechanistic photolytic and photocatalytic degradation of triclosan

Author:
Solá-Gutiérrez, Claudia; Schröder, Sophie; San-Román, M. Fresnedo; Ortiz, Inmaculada
Source:
Journal of environmental management 2020 v.260 pp. 110101
ISSN:
0301-4797
Subject:
byproducts,   etc   ; oxidation; personal care products; photocatalysis; photolysis; remediation; triclosan;     Show all 7 Subjects
Abstract:
... The environmentally extended presence of triclosan, TCS, component of many pharmaceutical and personal care products, and its known persistent character have awoke the scientific and social concern leading to the study of effective remediation techniques. Advanced oxidation techniques stand out for the effectiveness in degrading many persistent compounds, and as a result, they have been addressed ...
DOI:
10.1016/j.jenvman.2020.110101

13. Photocatalytic Oxidative Dearomatization of Orcinaldehyde Derivatives

Author:
Baker Dockrey, Summer A.; Narayan, Alison R. H.
Source:
Organic letters 2020 v.22 no.9 pp. 3712-3716
ISSN:
1523-7052
Subject:
byproducts,   etc   ; chemical structure; organic compounds; oxidants; oxygen; photocatalysis; stoichiometry;     Show all 7 Subjects
Abstract:
... For decades, oxidative dearomatization has been employed as a key step in the synthesis of complex molecules. Challenges in controlling the chemo- and site-selectivity of this transformation have sparked the development of a variety of specialized oxidants; however, these result in stoichiometric amounts of organic byproducts. Herein, we describe a photocatalytic method for oxidative dearomatizati ...
DOI:
10.1021/acs.orglett.0c01207

14. Amination Reaction of Cyclohexanol over a Commercial Ni-Based Catalyst, Part I: Influence of Operating Conditions

Author:
Churro, Rui; Mendes, Fernando; Araújo, Paulo; Ribeiro, Maria Filipa; Madeira, Luı́s M.
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.14 pp. 6565-6579
ISSN:
1520-5045
Subject:
byproducts,   etc   ; amination; amines; ammonia; boiling point; catalysts; hydrogen; nickel; temperature;     Show all 9 Subjects
Abstract:
... Selective production of amines using non-noble-based catalysts is of crucial industrial importance. The amination of cyclohexanol (CHOL) was performed in a fixed-bed reactor, using NH₃ as an aminating agent in the presence of H₂, over a commercial Ni-based catalyst, yielding cyclohexylamine (CHA). Higher boiling-point byproducts or heavy ends (HEs) were also detected. Prior to reaction, the cataly ...
DOI:
10.1021/acs.iecr.0c00473

15. Dominant formation of unregulated disinfection by-products during electrocoagulation treatment of landfill leachate

Author:
Xu, Bing; Iskander, Syeed Md; He, Zhen
Source:
Environmental research 2020 v.182 pp. 109006
ISSN:
0013-9351
Subject:
byproducts,   etc   ; activated carbon; chlorine; disinfection; electrocoagulation; landfill leachates; monitoring; toxicity;     Show all 8 Subjects
Abstract:
... During the electrocoagulation (EC) treatment of landfill leachate, the production of chlorine species may result in the formation of harmful disinfection by-products (DBPs). This formation was investigated in the present study by monitoring five classes of DBPs (haloacetic acids-HAA, trihalomethanes-THM, haloacetonitriles-HAN, haloketones-HK, and halonitromethanes-HNM) in two leachate samples trea ...
DOI:
10.1016/j.envres.2019.109006

16. Green Solvents for the Extraction of High Added-Value Compounds from Agri-food Waste

Author:
Torres-Valenzuela, Laura Sofía; Ballesteros-Gómez, Ana; Rubio, Soledad
Source:
Food engineering reviews 2020 v.12 no.1 pp. 83-100
ISSN:
1866-7910
Subject:
byproducts,   etc   ; biomass; ionic liquids; supply chain; value added; wastes;     Show all 6 Subjects
Abstract:
... Large amounts of agri-food by-products, non-edible food, and waste are produced throughout the supply chain from the initial production to the final consumption stages. The valorization of this biomass to obtain high value-added compounds has been the focus of extensive research in the last decade. For this purpose, the use of green techniques is essential to reduce the negative impact on the heal ...
DOI:
10.1007/s12393-019-09206-y

17. Recycling of lead from spent lead-acid battery by vacuum reduction-separation of Pb-Sb alloy coupling technology

Author:
Liu, Tiantian; Bao, Zhiqun; Qiu, Keqiang
Source:
Waste management 2020 v.103 pp. 45-51
ISSN:
0956-053X
Subject:
byproducts,   etc   ; alloys; antimony; batteries; energy conservation; lead; oxidation; recycling; temperature;     Show all 9 Subjects
Abstract:
... Until today, there are still many problems that must be solved through innovative research to make the recycling of spent lead-acid batteries and the separation of Pb-Sb alloy more environmentally friendly and energy-saving. In this paper, a novel method for regenerating lead paste, by vacuum reduction reaction coupling with separation of Pb-Sb alloy, was developed. In this process, antimony from ...
DOI:
10.1016/j.wasman.2019.12.007

18. Tandem Construction of Indole-Fused Phthalazines from (2-Alkynylbenzylidene)hydrazines under Metal-Free Conditions

Author:
Shi, Zhaojiang; Wang, Lianhui; Yang, Zi; Jie, Lianghua; Liu, Xiao; Cui, Xiuling
Source:
Journal of organic chemistry 2020 v.85 no.5 pp. 3029-3040
ISSN:
1520-6904
Subject:
byproducts,   etc   ; air; chemical structure; cyclization reactions; hydrazines; organic chemistry;     Show all 6 Subjects
Abstract:
... An efficient approach to invent diversely substituted indole-fused phthalazines from in situ formed (2-alkynylbenzylidene)hydrazines under metal-free conditions via selective radical cyclization has been developed. Notably, this 6-exo-dig addition–cyclization tandem procedure proceeds under air atmosphere and shows a broad substrate suitability, as well as avoids harmful byproducts, which complies ...
DOI:
10.1021/acs.joc.9b02937

19. Life cycle assessment in wastewater treatment technology

Author:
Parra-Saldivar, Roberto; Bilal, Muhammad; Iqbal, Hafiz M.N.
Source:
Current opinion in environmental science & health 2020 v.13 pp. 80-84
ISSN:
2468-5844
Subject:
byproducts,   etc   ; human health; life cycle assessment; pollutants; risk; wastewater treatment;     Show all 6 Subjects
Abstract:
... Life cycle assessment (LCA) has been recognized as a sophisticated approach to evaluate the overall impact of a process and related by-products through its life cycle from an environmental viewpoint. LCA is being performed in different sectors for an optimal evaluation and comparison purposes. Herein, we signify the LCA in wastewater treatment technology, recent advances in LCA, and their effectiv ...
DOI:
10.1016/j.coesh.2019.12.003

20. Characterization and Hazards of the Silicon-Based Polymers Produced in the Manufacture of Ultrapure Polysilicon

Author:
Colomb, Matthias A.; Straight, Stephen D.; Hanaue, Yasuhiro
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.7 pp. 2696-2707
ISSN:
1520-5045
Subject:
byproducts,   etc   ; air; energy; equipment; flammability; manufacturing; polymers; silicon; Japan;     Show all 9 Subjects
Abstract:
... The process of making ultrapure polysilicon by the Siemens process results in an unwanted secondary reaction forming oligomers and polymers containing a silicon backbone. These byproducts accumulate in the exhaust piping and downstream equipment used in the polysilicon manufacturing process. They become extremely dangerous when exposed to moisture, including moisture contained in ambient air, beco ...
DOI:
10.1021/acs.iecr.9b06363