Anodic oxidation of textile wastewaters on boron-doped diamond electrodes

被引:14
作者
Abdessamad, NourElHouda [1 ]
Akrout, Hanene [1 ]
Bousselmi, Latifa [1 ]
机构
[1] Ctr Water Res & Technol CERTE, Lab Wastewater Treatment, Soliman 8020, Tunisia
关键词
anodic oxidation; BDD bipolar electrode; textile effluent; current efficiency; energy consumption; electrical energy per order; ORDER E-EO; ELECTROCHEMICAL OXIDATION; SYNTHETIC EFFLUENT; ELECTRICAL ENERGY; DYES; DEGRADATION; ACID; ELECTROCOAGULATION; DECOLORIZATION; OPTIMIZATION;
D O I
10.1080/09593330.2015.1056235
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The objective of this study is to investigate the potential application of the anodic oxidation (AO) on two electrolytic cells (monopolar (Cell 1) and bipolar (Cell 2)) containing boron-doped diamond electrodes on the treatment of real textile effluents to study the reuse possibility of treated wastewater in the textile industry process. AO is applied in the flocculation coagulation pretreatment of both upstream (BH) and downstream (BS) effluents. The chemical oxygen demand (COD) results show that the final COD removal obtained for the BH effluent in the case of Cell 1 and Cell 2 is 800 and 150mg O2L-1 after 5 and 6h of electrolysis, respectively. The treatments of the BS effluent allow for obtaining a final COD of 76mgL(-1)for Cell 1 and a total mineralization for Cell 2. The obtained results demonstrate that the apparent mineralization kinetics of both effluents when using Cell 2 are about four times faster than the one obtained by Cell 1 and highlight the important contribution of the bipolar cell. Besides, the energy consumption values show that the treatment of the BH effluent by Cell 1 consumes 865kWhkgCOD(-1) against 411kWhkgCOD(-1) by Cell 2. Therefore, the use of Cell 2 decreases the energy cost by 2.1-6.65 times when compared to Cell 1 in the case of the BH and BS effluent treatment, respectively.
引用
收藏
页码:3201 / 3209
页数:9
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