桂林理工大学学报2023，Vol.43Issue(4)：695-702,8.DOI:10.3969/j.issn.1674-9057.2023.04.020
BC/Bi4O5Br2耦合过一硫酸盐光催化处理渗滤液尾水
Photocatalytic treatment of leachate tailwater by BC/Bi4O5Br2 coupled with peroxynitrite
摘要
Abstract
BC/Bi4O5Br2 photocatalyst was synthesized by ultrasonic assisted room temperature in-situ precipita-tion method,and the effects of TiO2 system,BC/Bi4O5Br2 system and BC/Bi4O5Br2 coupled with peroxymono-sulfate(PMS)system on the treatment of leachate tailwater were compared under visible light.The effects of PMS dosage and reaction time in BC/Bi4O5Br2 coupled with PMS system were investigated.The organic compo-sition of leachate were analyzed by UV-Vis spectrum and three-dimensional fluorescence spectra.The results show that the humus removal efficiency of BC/Bi4O5Br2 coupled with PMS system is better than the other two systems.The removal rates of COD,humus(A254)and chroma(CN)of BC/Bi4O5Br2 are 13.07%,12.74%and 52.19%,respectively.BOD5/COD increases from 0.08 to 0.18.0.1 g BC/Bi4O5Br2 coupled with 0.20 g PMS system has a good degradation effect on the organic matter in leachate tailwater,especially in the first 0.5 h,and the degradation efficiency does not increase significantly after 1.5 h.The maximum TOC removal rate of BC/Bi4O5Br2 coupled with PMS is 30.5%,16.5%higher than that of BC/Bi4O5Br2.The maximum removal rate of A254 is 53.97%,41.5%higher than that of BC/Bi4O5Br2.UV-Vis spectrum and three-dimensional fluo-rescence spectra show that the leachate tailwater is dominated by humus-like substances.The results can pro-vide a reference for the treatment of leachate tailwater by heterogeneous photocatalyst coupled with a sulfate.关键词
渗滤液尾水/Bi4O5Br2/过一硫酸盐/光催化/生物炭Key words
leachate tailwater/Bi4O5Br2/peroxymonosulfate/photocatalysis/biochar分类
化学化工引用本文复制引用
孙晓杰,王亚搏,张木喜,谭知涵,李洁,张红霞,朱红祥..BC/Bi4O5Br2耦合过一硫酸盐光催化处理渗滤液尾水[J].桂林理工大学学报,2023,43(4):695-702,8.基金项目
国家自然科学基金项目(52070049) （52070049）
广西自然科学基金项目(2018GXNSFGA281001) （2018GXNSFGA281001）
广西科技重大专项(AA18118013) （AA18118013）
广西科技计划项目(AD18126018) （AD18126018）
广西研究生教育创新计划项目(YCSW2021198) （YCSW2021198）
