电凝
阳极
废水
化学
芬顿反应
过程(计算)
污水处理
制浆造纸工业
电极
废物管理
材料科学
环境工程
环境科学
过氧化氢
操作系统
有机化学
物理化学
计算机科学
工程类
作者
Devendra Rai,Shishir Sinha
出处
期刊:Chemosphere
[Elsevier]
日期:2023-09-01
卷期号:336: 139225-139225
被引量:1
标识
DOI:10.1016/j.chemosphere.2023.139225
摘要
The influence of anode materials on the electrochemical treatment of tannery wastewater (TWW) was evaluated using Pt, Ti/RuO2-IrO2 (DSA), Ti/SnO2-Sb, Ti/PbO2, and Ti/SnO2-Sb/PbO2 electrodes. The comparison of the degradation mechanism of these electrodes in the electro-Fenton (EF) treatment was evaluated. The Ti/SnO2-Sb/PbO2 anode was efficient, with high electrocatalytic activity, stability, and reproducibility of the degradation results. Further, the study was extended to define the ability of sequential EF and electrocoagulation (EC) processes to clean TWW. The EC treatment was conducted using Al electrodes, and the performance of the combined treatment was evaluated by the removal of chemical oxygen demand (COD), turbidity, total suspended solids (TSS), sulfide, and Cr removal. The role of chlorides and sulfate salts during both treatments was evaluated by monitoring the concentration changes of these anions during the whole treatment using ion chromatography (IC). A sequential 1.5 h EF and 1 h EC treatment were applied to achieve a satisfactory degradation of (81.2 ± 3.9)% COD, >98% Cr, >99% turbidity, TSS, and sulfide removal. Additionally, the combined treatment was found to be more efficient towards the COD removal, achieving about 22.5% higher COD removal consuming almost the same amount of electrical energy.
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