Synchronous mineralization of three aqueous non-steroidal anti-inflammatory drugs in electrochemical advanced oxidation process  

作　　者：Lei Xu Xinyue Cui Jianbo Liao Yufeng Liu Baoyi Jiang Junfeng Niu 

机构地区：[1]Research Center for Eco-Environmental Engineering,Dongguan University of Technology,Dongguan 523808,China

出　　处：《Chinese Chemical Letters》2022年第8期3701-3704,共4页中国化学快报（英文版）

基　　金：financially supported by the National Science Fund for Distinguished Young Scholars(No.51625801);the National Natural Science Foundation of China(Nos.51878169 and52000028);the Guangdong Innovation Team Project for Colleges and Universities(No.2016KCXTD023);Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme(2017);Guangdong Basic and Applied Basic Research Foundation(Nos.2019A1515110182 and 2019A1515110681)。

摘　　要：Electrochemical degradation performances of three non-steroidal anti-inflammatory drugs(NSAIDs),acetaminophen(ACT),aspirin(ASP)and ibuprofen(IBP),were investigated and compared in their alone and mixture conditions using Ti/SnO_(2)-Sb/La-PbO_(2).The pseudo-first-order degradation kinetics(k)order was k_(IBP-A)(0.110 min^(-1))>k_(ASP-A)(0.092 min^(-1))>k_(ACRT-A)(0.066 min^(-1))in their alone condition,while that was k_(ACT-M)(0.088 min^(-1))>k_(ASP-M)(0.063 min^(-1))>k_(IBP-M)(0.057 min^(-1)) in their mixture condition.The·OH apparent production rate constant of 5.23 mmol L^(-1)min^(-1)m^(-2) and an electrical energy per order(E_(EO)) value of 6.55 Wh/L could ensure the synchronous degradation of the NSAIDs mixture.The mineralization efficiency of NSAIDs mixture was 86.9%at 240 min with a mineralization current efficiency of 1.67%.Acetic acid and oxalic acid were the main products in the mineralization process for the both conditions.In the mixture condition,there were higher k values at lower initial concentrations and higher current density,while the presence of carbonate and humic acid inhibited their degradation.The results indicated electrochemical advanced oxidation process can effectively and synchronously mineralize NSAIDs mixture in wastewater.

关 键 词：Electrochemical advanced oxidation Non-steroidal anti-inflammatory drugs Degradation kinetics Synchronous mineralization WASTEWATER 

分 类 号：TQ460.1[化学工程—制药化工]