Optimization of a bioelectrochemical system for 2, 4-dichloronitrobenzene transformation using response surface methodology. Issue 4 (18th January 2019)

• Record Type: Journal Article
• Authors: Chen, Hui; Lu, Donghui; Wang, Caiqin; Chen, Linlin; Xu, Xiangyang; Zhu, Liang
• Is Part Of: RSC advances. Volume 9:Issue 4(2019)
• Page Start: 2309
• Page End: 2315
• Publication Date: 2019-01-18
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra10110h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In the present study, a bioelectrochemical system (BES) was developed for 2, 4-dichloronitrobenzene (DClNB) transformation. Abstract : In the present study, a bioelectrochemical system (BES) was developed for 2, 4-dichloronitrobenzene (DClNB) transformation. Response surface methodology (RSM) was applied to optimize the operational conditions, including the V / S ratio (volume of the BES/size of the electrode ratio), interval ( D ) (distance between the anode and cathode) and position ( P ) (proportion of the electrodes immerged in the sludge). The optimum conditions for the V / S ratio, interval and position were 40, 2.31 cm and 0.42. The pollutant removal rate and increase in Cl − were 1.819 ± 0.037 mg L −1 h −1 and 11.894 ± 0.180 mg L −1, which were close to the predicted values (1.908 mg L −1 h −1 and 12.485 mg L −1 ). A continuous experiment indicated that the pollutant removal efficiency in the BES with 50% of the electrodes immerged in the sludge was 34.6% and 22.6% higher than that in the ones with 0 and 100% of the electrodes immerged in the sludge.