Abstract:This work investigated removal of trace tert-butyl alcohol (TBA) from aqueous solution by using electrocoagulation technology. Effects of electrode materials, electrode distance, current density and initial pH values of solution on the removal of TBA were studied, respectively. The results showed that after 120minutes, the removal efficiency of TBA could reach 80.4% when aluminum was used as the anode, stainless steel was used as the cathode, the electrode distance was 1.4cm, the current density was 20mA/cm2, and the initial pH value of the solution was 8. Meanwhile, the actual loss of aluminum anode (1.93kg/m3) was more than the theoretical loss (1.61kg/m3). Besides, the removal process of TBA by electrocoagulation could also be predicted by a pseudo-first-order kinetics equation. The analysis of floc characteristics showed that in addition to adsorption and flocculation effects of AlO(OH) and Al(OH)3 floc, there was also an anodic oxidation process in the process of removing TBA by electroflocculation, which resulted in oxidation of TBA to aldehydes, ketones and other small molecular substances.
刘宗, 唐佳伟, 张春晖, 王文倩, 周伟龙, 林烨, 刘翔宇, 陈向, 李可蝶. 电絮凝法去除水中微量叔丁醇的研究[J]. 中国环境科学, 2021, 41(1): 122-130.
LIU Zong, TANG Jia-wei, ZHANG Chun-hui, WANG Wen-qian, ZHOU Wei-long, LIN Ye, LIU Xiang-yu, CHEN Xiang, LI Ke-di. Removal of trace tert-butyl alcohol (TBA) in aqueous solution by electrocoagulation. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(1): 122-130.
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