文献类型：期刊文献

英文题名：Enhanced ferrate oxidation of organic pollutants in the presence of Cu (II) Ion

作者：Shi, Zhenyu[1] Wang, Dingxiang[2] Gao, Zhanqi[1] Ji, Xin[1] Zhang, Jing[2,3] Jin, Can[4]

第一作者：Shi, Zhenyu

通信作者：Zhang, J[1];Jin, C[2]

机构：[1]Environm Monitoring Ctr Jiangsu Prov, Nanjing 210036, Peoples R China;[2]Chongqing Univ, Coll Environm & Ecol, Chongqing 400045, Peoples R China;[3]Harbin Inst Technol, Sch Environm, Harbin 150090, Peoples R China;[4]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Peoples R China

年份：2022

卷号：433

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20221311867612);Scopus(收录号：2-s2.0-85127160956);WOS:【SCI-EXPANDED(收录号:WOS:000794866800004)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 22076016 and 51878095), and by the Fundamental Research Funds for the Central Universities (2021CDJQY-006).

语种：英文

外文关键词：Copper ion; Ferrate; Sulfamethoxazole; Degradation pathway; Water treatment

摘要：In this study, we found that the introduction of Cu(II) (several mu M, close to the concentration level of some real water/wastewater) in ferrate (Fe(VI)) oxidation can remarkably accelerate the abatement of various organic pollutants under slightly alkaline conditions. The results show that 5 mu M sulfamethoxazole (SMX) can be completely degraded by Fe(VI) (50 mu M) in the presence of 20 mu M Cu(II) within 10 min at pH 8.0, which was 1.65 times higher than that by Fe(VI) alone. High-valent iron intermediates (i.e. Fe(V), Fe(IV)) and Cu(III) were generated as reactive species in the Cu(II)/Fe(VI) system, all of which contributed to the enhanced oxidation of SMX. Common water components, except for HCO3- and humic acid, exhibited no influence on SMX removal. Additionally, the enhanced removal of SMX by Cu(II)/Fe(VI) was also observed in real water with the benefit of total removal of Cu(II) by the ferrate resultant particles. Due to the presence of highly reactive and selective oxidant, the Cu(II)/Fe(VI) system could react readily with organic pollutants containing electron-rich moieties, such as phenol, olefin or amino groups. This study provided a simple, selective, and practical strategy for the abatement of organic pollutants and a simultaneous removal of Cu(II).