Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7068824 | Bioresource Technology | 2018 | 34 Pages |
Abstract
p-Chloronitrobenzene (p-CNB) is a persistent refractory and toxic pollutant with a concentration up to 200â¯mg/L in industrial wastewater. Here, a super-fast removal rate was found at 0.2-0.8â¯V of external voltage over a p-CNB concentration of 40-120â¯mg/L when a bioelectrochemical technology is used comparing to the natural biodegradation and electrochemical methods. The reduction kinetics (k) was fitted well according to pseudo-first order model with respect to the different initial concentration, indicating a 1.12-fold decrease from 1.80 to 0.85â¯hâ1 within the experimental range. Meanwhile, the highest k was provided at 0.5â¯V with the characteristic of energy saving. It was revealed that the functional bacterial (Propionimicrobium, Desulfovibrio, Halanaerobium, Desulfobacterales) was selectively enriched under electro-stimulation, which possibly processed Cl-substituted nitro-aromatics reduction. The possible degradation pathway was also proposed. This work provides the beneficial choice on the rapid treatment of high-concentration p-CNB wastewater.
Related Topics
Physical Sciences and Engineering
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Authors
Xinhong Peng, Xianhui Pan, Xin Wang, Dongyang Li, Pengfei Huang, Guanhua Qiu, Ke Shan, Xizhang Chu,