电化学2022，Vol.28Issue(1)：39-45,7.DOI:10.13208/j.electrochem.210419
电解耦合臭氧化体系处理酸性废水的氧化效能
Oxidative Efficiency of Ozonation Coupled with Electrolysis for Treatment of Acid Wastewater
摘要
Abstract
Establishment of an ozone-based advanced oxidation process (AOPs-O3) for effective treatment of acid wastewater is an important and difficult task.The process of ozonation coupled with electrolysis (electrolysis-ozonation,E-O3) has been reported to effectively degrade pollutants in neutral solution.We studied the efficiency of E-O3 for degradation of acetic acid (HAc,an ozone inert chemical) in acid solution and found that E-O3 had high oxidative efficiency at pH less than 3.For example,52.2％ of 100 mg· L-1 HAc could be removed by E-O3 in 120 min at pH 1.0,but only 2.2％ and 3.5％ by electrolysis and ozonation,respectively.Although the efficiency of E-O3 decreased with the increase of acidity of solution,it still remained relatively high even at pH 0.An aromatic compound of acetophenone could also be effectively degraded by E-O3 at pH 1.0.The results indicate that electrons can transfer from cathode to dissolved ozone or oxygen in acidic solution,thus resulting in generation of reactive species,e.g.hydroxyl radicals.A real acidic wastewater was also effectively pretreated by E-O3.This study provides a promising AOPs-O3 for treatment of acid wastewaters.关键词
电解/臭氧/乙酸/效率/酸性废水Key words
electrolysis/ozone/acetic acid/efficiency/acid wastewater引用本文复制引用
胡泽友,项丰云,毛佶强,丁亚磊,童少平..电解耦合臭氧化体系处理酸性废水的氧化效能[J].电化学,2022,28(1):39-45,7.基金项目
This work was supported by the Natural Science Foundation of Zhejiang Province,China (Grant num-ber LY18B060013). （Grant num-ber LY18B060013）
