污泥秸秆生物炭的制备及其重金属吸附性能分析  

Preparation of Biochar from Sludge Straw and Its Adsorption Properties for Heavy Metals

作　　者：朱康健 林梦婉 曹燃 王翔翔 ZHU Kangjian;LIN Mengwan;CAO Ran;WANG Xiangxiang(School of Environment and Energy,Anhui Jianzhu University,Hefei,Anhui 230601,China;Key Laboratory of Water Pollution Control and Wastewater Reuse of Anhui Province,Hefei,Anhui 230601,China)

机构地区：[1]安徽建筑大学环境与能源工程学院,安徽合肥230601 [2]水污染控制与废水资源化安徽省重点实验室,安徽合肥230601

出　　处：《环境监测管理与技术》2025年第1期87-91,共5页The Administration and Technique of Environmental Monitoring

基　　金：国家重点研发计划基金资助项目(2020YFC1908603);安徽省自然科学青年基金资助项目(1908085QE241);安徽省科技重大专项基金资助项目(202003a06020024)。

摘　　要：以花生秸秆与农村污水污泥为原料,在不同热解温度、热解时间、秸秆和污泥配比条件下制备生物炭,并对制得的生物炭理化性质进行表征,通过吸附试验考察生物炭对重金属离子Cu^(2+)、Pb^(2+)、Cr^(6+)的吸附性能。结果表明:当热解温度为400℃、热解时间为4 h时,纯秸秆制备的生物炭为最佳,该条件下生物炭的产率为35.91%,灰分为28.49%,制得的生物炭对Cu^(2+)、Pb^(2+)、Cr^(6+)的吸附量分别为21.38 mg/g、17.65 mg/g、21.07 mg/g。Using peanut straw and rural sewage sludge as raw materials,biochar was prepared under different pyrolysis temperatures,pyrolysis time and straw-to-sludge ratios.The physicochemical properties of the biochar were characterized,and its adsorption properties for heavy metal ions of Cu^(2+),Pb^(2+)and Cr^(6+)were investigated through adsorption tests.The results indicated that when the pyrolysis temperature was 400℃and the pyrolysis time was 4 h,the biochar prepared from pure straw was optimal.Under these conditions,the yield of biochar was 35.91%,the ash content was 28.49%,and the adsorption capacities for Cu^(2+),Pb^(2+)and Cr^(6+)were 21.38 mg/g,17.65 mg/g,and 21.07 mg/g,respectively.

关 键 词：污泥 秸秆 生物炭 热解 重金属吸附 

分 类 号：X703[环境科学与工程—环境工程] TQ424[化学工程]