globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.09.038
Scopus记录号: 2-s2.0-85054455984
论文题名:
Development of a novel chem-bio hybrid process using biochar supported nanoscale iron sulfide composite and Corynebacterium variabile HRJ4 for enhanced trichloroethylene dechlorination
作者: Lyu H.; Tang J.; Shen B.; Siddique T.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 147
起始页码: 132
结束页码: 141
语种: 英语
英文关键词: Adsorption ; Biochar ; Biodegradation ; FeS ; Reduction ; TCE
英文摘要: A sequential chem-bio hybrid process was developed using a novel biochar supported carboxymethyl cellulose-stabilized nanoscale iron sulfide (CMC-FeS@biochar) as a chemical remover and Corynebacterium variabile HRJ4 as a biological agent for trichloroethylene (TCE) degradation. Compared with CMC-FeS, FeS@biochar600, bare FeS and biochar600, the CMC-FeS@biochar600 composite displayed better physiochemical properties (smaller hydrodynamic diameter and higher stability) and demonstrated excellent removal capacity for TCE from aqueous phase. A facultative bacterial strain, Corynebacterium variabile HRJ4, growing well in the presence of CMC-FeS@biochar (added up to 0.25 g L−1), further enhanced TCE removal after chemical treatment. The dechlorination pathway proposed based on the gas chromatography–mass spectrometry (GC-MS) analysis revealed that TCE was dechlorinated to cis-1,2-dichloroethene (cis-DCE) and acetylene via hydrogenolysis and β-elimination, respectively within 12 h by CMC-FeS@biochar. Addition of HRJ4 strain into the reaction system effectively enhanced the degradation of the residual TCE, cis-DCE and acetylene to ethylene. Acetylene was the main product in chemical process, whereas ethylene was the main product in biological process as strain HRJ4 could reduce acetylene to ethylene effectively. The results of this study signify the potential application of CMC-FeS@biochar600/HRJ4 chem-bio hybrid system for complete degradation of TCE in the anaerobic environment. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112363
Appears in Collections:气候减缓与适应

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作者单位: School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China; Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Department of Renewable Resources, University of Alberta, Edmonton, Alberta T6G 2G7, Canada

Recommended Citation:
Lyu H.,Tang J.,Shen B.,et al. Development of a novel chem-bio hybrid process using biochar supported nanoscale iron sulfide composite and Corynebacterium variabile HRJ4 for enhanced trichloroethylene dechlorination[J]. Water Research,2018-01-01,147
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