介孔污泥生物炭去除罗丹明B的性能研究  

Study on the performance of mesoporous sludge biochar for the removal of Rhodamine B

作　　者：熊瑜婷 罗才贵[1,2,3] 唐学昆[1,2,3] 罗仙平[1,2,3,4] XIONG Yuting;LUO Caigui;TANG Xuekun;LUO Xianping(Jiangxi Provincial Key Laboratory of Environmental Pollution Prevention and Control in Mining and Metallurgy,Jiangxi University of Science and Technology,Ganzhou 341000,China;College of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Engineering Research Center for Efficient Development and Application of Tungsten Resources,Ministry of Education,Jiangxi University of Science and Technology,Ganzhou 341000,China;East China University of Technology,Nanchang 330000,China)

机构地区：[1]江西理工大学矿冶环境污染防控江西省重点实验室,江西赣州341000 [2]江西理工大学资源与环境工程学院,江西赣州341000 [3]江西理工大学钨资源高效开发及应用教育部工程研究中心,江西赣州341000 [4]东华理工大学,江西南昌330000

出　　处：《工业水处理》2024年第12期94-103,共10页Industrial Water Treatment

基　　金：江西省技术创新引导类计划项目(20192AEI91003);江西省研究生创新专项资金项目(XY2022-S020);江西理工大学高层次人才科研启动项目(205200100593);江西省教育厅科学技术研究项目(GJJ2200823);江西理工大学博士科研启动基金项目(205200100645)。

摘　　要：以市政污泥为原料,ZnCl_(2)为活化剂,通过浸渍-热解法制备改性污泥生物炭(ASBC),通过构建ASBC/过一硫酸氢钾(PMS)体系并用于降解罗丹明B(RhB),探究ASBC投加量、PMS浓度、反应pH和共存无机阴离子等反应条件对ASBC/PMS体系降解RhB的影响。BET结果表明,经过活化后的生物炭的比表面积从8.19 m^(2)/g提高至175.04 m^(2)/g,孔容从0.017 cm^(3)/g提高至0.189 cm^(3)/g,活化后的污泥生物炭具备更多的反应活性位点;当ASBC投加量为0.2 g/L、PMS浓度为0.8 mmol/L,反应5 min后对RhB的去除率高达99.7%,反应可在较宽的pH范围(3~11)内发挥作用;H_(2)PO_(4)^(-)和NO_(3)^(-)对ASBC/PMS体系降解效果无显著影响,HCO_(3)^(-)具有抑制作用,Cl^(-)具有促进作用;ASBC/PMS体系降解RhB是非自由基路径,主要活性物质是^(1)O_(2)。In this study,modified sludge biochar(ASBC)was prepared by impregnation-pyrolysis method with municipal sludge as raw material and ZnCl_(2) as activator.ASBC/Peroxymonosulfate(PMS)system was constructed and used to degrade Rhodamine B(RhB).The effects of ASBC dosage,PMS concentration,reaction pH,and co-existing inorganic anions on the degradation of RhB in ASBC/PMS system were investigated.BET results showed that the specific surface area of activated biochar increased from 8.19 m^(2)/g to 175.04 m^(2)/g,pore volume increased from 0.017 cm^(3)/g to 0.189 cm^(3)/g,and activated sludge biochar had more active sites.When the dosage of ASBC was 0.2 g/L and the concentration of PMS was 0.8 mmol/L,the removal rate of RhB was as high as 99.7% after 5 min reaction,and the reaction could work in a wide pH range(3-11).H_(2)PO_(4)^(-)and NO_(3)^(-)had no significant effect on the degradation of ASBC/PMS system,HCO_(3)^(-)had inhibitory effect and Cl^(-)had promotional effect.RhB degradation by ASBC/PMS system was a non-radical pathway with ^(1)O_(2) as the main active substance.

关 键 词：ZnCl_(2)改性 污泥生物炭 过一硫酸盐 罗丹明B 非自由基 

分 类 号：X703.1[环境科学与工程—环境工程]