化工环保2023，Vol.43Issue(6)：773-779,7.DOI:10.3969/j.issn.1006-1878.2023.06.009
生物炭负载纳米零价铁活化过硫酸盐去除废水中环丙沙星
Removal of cyprofloxacin from wastewater using persulfate activated by biochar supported nano zero-valent iron
摘要
Abstract
Biochar(BC)loaded nanoscale zero-valent iron(BC@nZVI)was prepared by a one-step method using rice husk and FeCl3 as raw materials,and its structure and morphology were characterized.Using ciprofloxacin(CIP)as the target pollutant,the effects of BC@nZVI preparation conditions,BC@nZVI amount,initial solution pH,reaction temperature,and inorganic anions on the removal of CIP by BC@nZVI activated peroxynitrite(PS)were investigated,and the types of free radicals playing a major role in the system were also probed.The results show that under the optimized conditions of pyrolysis temperature 900 ℃,FeCl3 concentration 1.5 mmol/L,BC@nZVI amount 0.4 g/L,reaction temperature 45 ℃,initial solution pH about 6.2(without adjustion),the removal rate of CIP by BC@nZVI activated PS is as high as 98.53％after reacted for 180 min.The addition of SO42-to the system significantly reduces the removal rate of CIP,while the addition of NO3-and Cl-has a slight impact on CIP removal.SO4-·and·OH radicals are present in the system and SO4-·plays a major role in CIP degradation.关键词
生物炭/纳米零价铁/过硫酸盐/环丙沙星/自由基Key words
biochar/nanoscale zero-valent iron/persulfate/ciprofloxacin/free radical分类
资源环境引用本文复制引用
姚淑华,陈艺文,董毅,李士凤..生物炭负载纳米零价铁活化过硫酸盐去除废水中环丙沙星[J].化工环保,2023,43(6):773-779,7.基金项目
辽宁省教育厅高等学校基本科研项目(LQ2020027,LJK-MZ20220763) （LQ2020027,LJK-MZ20220763）
辽宁省高等学校创新团队项目(LT2020016). （LT2020016）
