BC/Bi_(4)O_(5)Br_(2)耦合过一硫酸盐光催化处理渗滤液尾水  

Photocatalytic treatment of leachate tailwater by BC/Bi_(4)O_(5)Br_(2) coupled with peroxynitrite

作　　者：孙晓杰[1,2,3,4] 王亚搏 张木喜 谭知涵 李洁 张红霞[1,2,3,4] 朱红祥[5,6] SUN Xiaojie;WANG Yabo;ZHANG Muxi;TAN Zhihan;LI Jie;ZHANG Hongxia;ZHU Hongxiang(College of Environmental Science and Engineering,Guilin University of Technology,Guilin 541006,China;Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology,Guilin University of Technology,Guilin 541006,China;Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area,Guilin University of Technology,Guilin 541006,China;Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base,Guilin University of Technology,Guilin 541006,China;a.College of Light Industry and Food Engineering,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Clean Pulp and Paper And Pollution Control,Guangxi University,Nanning 530004,China)

机构地区：[1]桂林理工大学环境科学与工程学院,广西桂林541006 [2]桂林理工大学广西环境污染控制理论与技术重点实验室,广西桂林541006 [3]桂林理工大学岩溶地区水污染控制与用水安全保障协同创新中心,广西桂林541006 [4]桂林理工大学广西环境污染控制理论与技术重点实验室科教结合科技创新基地,广西桂林541006 [5]广西大学轻工与食品工程学院,南宁530004 [6]广西大学广西清洁化制浆造纸与污染控制重点实验室,南宁530004

出　　处：《桂林理工大学学报》2023年第4期695-702,共8页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(52070049);广西自然科学基金项目(2018GXNSFGA281001);广西科技重大专项(AA18118013);广西科技计划项目(AD18126018);广西研究生教育创新计划项目(YCSW2021198)。

摘　　要：采用超声辅助室温原位沉淀法合成BC/Bi_(4)O_(5)Br_(2)光催化剂,在可见光下对比了TiO_(2)体系、BC/Bi_(4)O_(5)Br_(2)体系以及BC/Bi_(4)O_(5)Br_(2)耦合过一硫酸盐(PMS)体系处理渗滤液尾水的效果。考察了BC/Bi_(4)O_(5)Br_(2)耦合PMS体系中PMS投加量和反应时间的影响,通过紫外可见光谱、三维荧光图谱分析渗滤液尾水有机物成分。结果表明:BC/Bi_(4)O_(5)Br_(2)耦合PMS体系对腐殖质的去除效果较另外两体系的效果优异,BC/Bi_(4)O_(5)Br_(2)对COD、腐殖质(A_(254))、色度(CN)的去除率分别为13.07%、12.74%、52.19%,BOD_(5)/COD从0.08提升至0.18。BC/Bi_(4)O_(5)Br_(2)耦合PMS体系中,0.1 g BC/Bi_(4)O_(5)Br_(2)耦合0.20 g PMS体系对渗滤液尾水有机物有良好的降解效果,尤其在反应开始的前0.5 h作用效果明显,1.5 h后降解效率不再明显增加。BC/Bi_(4)O_(5)Br_(2)耦合PMS体系对TOC的最大去除率为30.5%,较BC/Bi_(4)O_(5)Br_(2)体系提高16.5%;对腐殖质的最大去除率为53.97%,较BC/Bi_(4)O_(5)Br_(2)体系提升41.5%。紫外可见光谱、三维荧光图谱表明渗滤液尾水以类腐殖质为主。研究结果可为非均相耦合过一硫酸盐光催化处理渗滤液尾水提供一定参考。BC/Bi_(4)O_(5)Br_(2) photocatalyst was synthesized by ultrasonic assisted room temperature in-situ precipita-tion method,and the effects of TiO_(2) system,BC/Bi_(4)O_(5)Br_(2) system and BC/Bi_(4)O_(5)Br_(2) 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/Bi_(4)O_(5)Br_(2) 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/Bi_(4)O_(5)Br_(2) coupled with PMS system is better than the other two systems.The removal rates of COD,humus(A254)and chroma(CN)of BC/Bi_(4)O_(5)Br_(2) are 13.07%,12.74%and 52.19%,respectively.BOD5/COD increases from 0.08 to 0.18.0.1 g BC/Bi_(4)O_(5)Br_(2) 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/Bi_(4)O_(5)Br_(2) coupled with PMS is 30.5%,16.5%higher than that of BC/Bi_(4)O_(5)Br_(2).The maximum removal rate of A254 is 53.97%,41.5%higher than that of BC/Bi_(4)O_(5)Br_(2).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 Bi_(4)O_(5)Br_(2) 过一硫酸盐 光催化 生物炭 

分 类 号：O643[理学—物理化学] X703[理学—化学]