Azo dye wastewater treatment in a bioelectrochemical-aerobic integrated system: effect of initial azo dye concentration and aerobic sludge concentration

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Azo dye wastewater treatment in a bioelectrochemical-aerobic integrated system: effect of initial azo dye concentration and aerobic sludge concentration
	Cui, Min-Hua ; Gao, Jian ; Wang, Ai-Jie ; Sangeetha, Thangavel
刊名	DESALINATION AND WATER TREATMENT
	2019-10-01
卷号	165 页码:314-320
关键词	Azo dye wastewater Electrochemical-aerobic integrated system Initial azo dye concentration Coulombic efficiency Sludge concentration
ISSN号	1944-3994
英文摘要	An integrated system that consisted of a bioelectrochemical reactor (BER) and an aerobic completely stirred tank reactor (ACSTR) was constructed to treat simulated wastewater mixed with azo dye Acid Orange 7 (AO7) and real municipal wastewater. It was found that AO7 could be efficiently decolorized in BER within 6 h while initial concentration fluctuated from 25 to 100 mg/L. With an initial AO7 concentration of 75 mg/L, BER reached a decolorization efficiency of 93.65 +/- 2.45% at 6 h and contributed 26.56 +/- 8.91% of chemical oxygen demand (COD) removal. Coulombic efficiency (CE) of current generation varied from 23.19 +/- 6.96 to 37.23 +/- 3.48% and CE for AO7 decolorization decreased from 30.45 +/- 3.19 to 14.59 +/- 1.21% at the initial AO7 concentration of 50 mg/L, which illustrated the important contribution of electrochemical reduction on AO7 decolorization. The effluent of BERs can be subsequently refined by ACSTR, the residual COD was 72 +/- 10 mg/L after 6 h treatment with an activated sludge concentration of 6000 mg/L. Further increasing the sludge concentration to 9000 mg/L, final COD concentration decreased to 62 +/- 7 mg/L. Results showed that the bioelectrochemical-aerobic integrated system effectively treated the mixed azo dye containing wastewater.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43337]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
作者单位	1.Jiangnan Univ, Sch Environm & Civil Engn, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Jiangsu, Peoples R China 2.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China 3.China Construct Municipal Engn Corp Ltd, Beijing 100071, Peoples R China
推荐引用方式 GB/T 7714	Cui, Min-Hua,Gao, Jian,Wang, Ai-Jie,et al. Azo dye wastewater treatment in a bioelectrochemical-aerobic integrated system: effect of initial azo dye concentration and aerobic sludge concentration[J]. DESALINATION AND WATER TREATMENT,2019,165:314-320.
APA	Cui, Min-Hua,Gao, Jian,Wang, Ai-Jie,&Sangeetha, Thangavel.(2019).Azo dye wastewater treatment in a bioelectrochemical-aerobic integrated system: effect of initial azo dye concentration and aerobic sludge concentration.DESALINATION AND WATER TREATMENT,165,314-320.
MLA	Cui, Min-Hua,et al."Azo dye wastewater treatment in a bioelectrochemical-aerobic integrated system: effect of initial azo dye concentration and aerobic sludge concentration".DESALINATION AND WATER TREATMENT 165(2019):314-320.