Abstract：
:p-Chloronitrobenzene (p-CNB) is a persistent refractory and toxic pollutant with a concentration up to 200 mg/L in industrial wastewater. Here, a super-fast removal rate was found at 0.2-0.8 V of external voltage over a p-CNB concentration of 40-120 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 0.85 h-1 within the experimental range. Meanwhile, the highest k was provided at 0.5 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.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Peng X,Pan X,Wang X,Li D,Huang P,Qiu G,Shan K,Chu Xdoi
10.1016/j.biortech.2017.10.068subject
Has Abstractpub_date
2018-02-01 00:00:00pages
844-850eissn
0960-8524issn
1873-2976pii
S0960-8524(17)31897-7journal_volume
249pub_type
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