脱水污泥活性炭的制备及其吸附特性研究  

Study on Absorption Characteristic and Preparation of Dewatered Sludge Active Carbon

作　　者：方卢秋[1] 李秋 

机构地区：[1]长江师范学院化学化工学院,重庆408100 [2]重庆西彭镇第一中学,重庆401326

出　　处：《江西师范大学学报（自然科学版）》2013年第3期306-309,330,共5页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：重庆市教育委员会科学技术研究(KJ071304)资助项目

摘　　要：以城市污水处理厂产生的脱水污泥为原料,采用化学活化法并结合传统的直接加热技术制备脱水污泥活性炭,研究了影响脱水污泥活性炭吸附特性的各种因素.研究结果表明:制备脱水污泥活性炭的优化条件是活化剂为5 mol·L-1ZnCl2+5 mol·L-1H2SO4混合溶液,固液比为1∶2.5,复配比为2∶1,浸渍时间为24 h,活化温度为600℃,活化时间为20 min.制备的脱水污泥活性炭碘吸附值为939.7 mg.g-1,产率为69.03%,其吸附特性优于商品活性炭.Dewatered sludge active carbon was prepared by dewatered sludge of municipal wastewater treatment plant adopting chemical activation method combined with direct pyrogenation technology.Various factors influenced the absorption characteristic of dewatered sludge active carbon was investigated carefully.The results show that：optimization condition of preparation dewatered sludge active carbon is 5 mol·L^-1 ZnCl2＋5 mol·L^-1 H2SO4 compound solution as activation reagen,solid-liquid ratio is 1∶ 2.5,ratio of ZnCl2∶ H2SO4 is 2∶ 1,soakaging time is 24 h,activation temperature is 600 ℃,activation time is 20 min.Iodine absorption value of dewatered sludge active carbon using method proposed to preparate is 939.7 mg·g-1,produce ratio is 69.03%,absorption characteristic excelled merchandise active carbon.

关 键 词：脱水污泥 脱水污泥活性炭 制备 吸附特性 碘吸附值 

分 类 号：TQ424.1[化学工程] X788[环境科学与工程—环境工程]