Enhanced isophthalonitrile complexation-reduction removal using a novel anaerobic fluidized bed reactor in a bioelectrochemical system based on electric field activation (AFBR-EFA)

被引：9

作者：

Cui, Tao ^{[1
]}

Wang, Yi ^{[1
]}

Wang, Xueye ^{[2
]}

Zhang, Yonghao ^{[3
]}

Han, Weiqing ^{[1
]}

Li, Jiansheng ^{[1
]}

Sun, Xiuyun ^{[1
]}

Shen, Jinyou ^{[1
]}

Wang, Lianjun ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Key Lab Jiangsu Prov Chem Pollut Control & Resour, Nanjing 210094, Peoples R China

[2] Nanjing Yuanheng Environm Res Inst Co LTD, Nanjing, Peoples R China

[3] Yancheng Inst Technol, Sch Environm Sci & Engn, Yancheng 224051, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 306卷

关键词：

Anaerobic reduction; Bioelectrochemical system (BES); Electric field activation; Synergistic mechanism; Microbial biodiversity; SLUDGE BLANKET; P-NITROPHENOL; MICROBIAL COMMUNITY; DEGRADATION; MINERALIZATION; DECHLORINATION; TRANSFORMATION; NITROBENZENE; PERFORMANCE; AZOARCUS;

D O I：

10.1016/j.biortech.2020.123115

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

On account of the recalcitrant and highly toxicity of organonitrile substrates, traditional processes are limited by HCN poisoning thus inefficient. This article proposed a novel anaerobic fluidized bed reactor with electric field activation (AFBR-EFA) which had a 260-day continuous operation. The operation aims to explore the practicability of the enhanced reduction of isophthalonitrile (IPN), with emphasis on the optimum operation parameters and synergistic effect between electric field and anaerobic processes. The results showed that relatively higher voltage (1.0 V < V < 1.6 V) had a positive impact on reduction enhancement. High removal could be obtained at high initial concentration, low methanol dosage and short HRT which indicated that tolerance to shock loading was significantly enhanced in AFBR-EFA. Furthermore, EFA visibly motivated the enrichment of electrochemically active bacteria and various autotrophic IPN degradation-related species. The significantly efficient performance makes the potential for full-scale application of the AFBR-EFA markedly improved, particularly for treating hard-biodegraded contaminants.

引用

页数：9

共 47 条

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