Bioelectrochemical system for recalcitrant p-nitrophenol removal

Shen, Jinyou, Feng, Cencen, Zhang, Yanyan, Jia, Fei, Sun, Xiuyun, Li, Jiansheng, Han, Weiqing, Wang, Lianjun and Mu, Yang (2012) Bioelectrochemical system for recalcitrant p-nitrophenol removal. Journal of Hazardous Materials, 209-210 516-519. doi:10.1016/j.jhazmat.2011.12.065


Author Shen, Jinyou
Feng, Cencen
Zhang, Yanyan
Jia, Fei
Sun, Xiuyun
Li, Jiansheng
Han, Weiqing
Wang, Lianjun
Mu, Yang
Title Bioelectrochemical system for recalcitrant p-nitrophenol removal
Formatted title
Bioelectrochemical system for recalcitrant p-nitrophenol removal
Journal name Journal of Hazardous Materials   Check publisher's open access policy
ISSN 0304-3894
1873-3336
Publication date 2012-03-30
Sub-type Article (original research)
DOI 10.1016/j.jhazmat.2011.12.065
Open Access Status Not yet assessed
Volume 209-210
Start page 516
End page 519
Total pages 4
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Subject 2305 Environmental Engineering
2304 Environmental Chemistry
2311 Waste Management and Disposal
2310 Pollution
2307 Health, Toxicology and Mutagenesis
Abstract Bioelectrochemical system (BES) for recalcitrant p-nitrophenol (PNP) removal was investigated in this study. Effective removal of PNP at rates up to 9.14±0.48molm d was achieved at an energy consumption as low as 0.010±0.002kWhmol PNP. PNP removal rate was enhanced with negative cathode potential, increased influent PNP concentration and shortened hydraulic retention time (HRT). Although the coulombic efficiencies at the anode did not exceed 40%, coulombic efficiencies for PNP removal at the cathode were above 70% at various cathode potentials. Compared with conventional anaerobic process, the cosubstrate dosage in BES was significantly reduced due to the high coulombic efficiencies at the cathode. p-Aminophenol (PAP) was identified as the dominant product of PNP reduction at the abiotic graphite cathode of BESs. This study demonstrated that the BES had a potential for efficient removal of nitrophenol pollutants from wastewater.
Formatted abstract
Bioelectrochemical system (BES) for recalcitrant p-nitrophenol (PNP) removal was investigated in this study. Effective removal of PNP at rates up to 9.14±0.48molm -3d -1 was achieved at an energy consumption as low as 0.010±0.002kWhmol -1 PNP. PNP removal rate was enhanced with negative cathode potential, increased influent PNP concentration and shortened hydraulic retention time (HRT). Although the coulombic efficiencies at the anode did not exceed 40%, coulombic efficiencies for PNP removal at the cathode were above 70% at various cathode potentials. Compared with conventional anaerobic process, the cosubstrate dosage in BES was significantly reduced due to the high coulombic efficiencies at the cathode. p-Aminophenol (PAP) was identified as the dominant product of PNP reduction at the abiotic graphite cathode of BESs. This study demonstrated that the BES had a potential for efficient removal of nitrophenol pollutants from wastewater.
Keyword Bioelectrochemical system
Cathode
Reduction
p-nitrophenol
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Advanced Water Management Centre Publications
 
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Created: Thu, 19 Jan 2012, 20:56:20 EST by Dr Yang Mu on behalf of Advanced Water Management Centre