globalchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2019.02.013
Scopus记录号: 2-s2.0-85061974141
论文题名:
Cost-efficient improvement of coking wastewater biodegradability by multi-stages flow through peroxi-coagulation under low current load
作者: Ren G.; Zhou M.; Zhang Q.; Xu X.; Li Y.; Su P.; Paidar M.; Bouzek K.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 154
起始页码: 336
结束页码: 348
语种: 英语
英文关键词: Biodegradability ; Coking wastewater ; Flow through ; Graphene modified cathode ; Peroxi-coagulation
英文摘要: Cost-effective pretreatment of the highly concentrated and biorefractory coking wastewater to improve biodegradability is of significant importance, while green electrochemical technologies without external chemicals addition are charming but still challenging due to its high energy consumption. In this work, a novel multi-stages flow through peroxi-coagulation (PC) was for the first time developed with graphite felt cathode modified by graphene, showing an excellent performance in removal of 71.5% COD, 72.3% phenol and 59.4% NH 3 -N and significant biodegradability enhancement with a low energy consumption as 1.2 kWh/m 3 . Compared with conventional flow PC, this process was more cost-effective due to more intensive.OH production and higher utilization of generated active species. Through UV spectrophotometry and GC-MS analysis, the improvement of biodegradability was attributed to the reduction of both low and high molecular weight compounds content in the coking wastewater. Comparing to the electro-Fenton, electrocoagulation and ozonation process, the proposed PC process was highly cost-effective, providing a promising and new alternative for pretreatment of coking wastewater. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121930
Appears in Collections:气候变化事实与影响

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作者单位: Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China; Department of Inorganic Technology, University of Chemistry and Technology Prague, Prague, Czech Republic

Recommended Citation:
Ren G.,Zhou M.,Zhang Q.,et al. Cost-efficient improvement of coking wastewater biodegradability by multi-stages flow through peroxi-coagulation under low current load[J]. Water Research,2019-01-01,154
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