文献类型：期刊文献

英文题名：Enhanced Ferrate Oxidation of Organic Pollutants in the Presence of Trace Cu(Ii) Ion

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

第一作者：Shi, Zhenyu

机构：[1] Environment Monitoring Center of Jiangsu Province, Nanjing, 210036, China; [2] Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; [3] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Laboratory of Biomass Energy and Material of Jiangsu Province, Nanjing, 210042, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220039908)

语种：英文

外文关键词：Alkalinity - Chemicals removal (water treatment) - Copper compounds - Iron compounds - Metal ions - Oxidation - Reaction intermediates - Water pollution

摘要：In this study, we found that the introduction of trace Cu(II) (several μM, 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 μM sulfamethoxazole (SMX) can be completely degraded by Fe(VI) (50 μM) in the presence of 20 μM 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 HCO 3 - 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 trace 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, broad-spectrum, and practical strategy for the purification of waters contaminated by organic pollutants and Cu(II). ? 2022, The Authors. All rights reserved.