改性橘子皮对重金属铅离子的吸附性能研究  

Study on adsorption of heavy metal lead ions by modified orange peel

作　　者：吴凡 郑锐生 刘雪梅[1] 黄晶 WU Fan;ZHENG Rui-sheng;LIU Xue-mei;HUANG Jing(School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;Wuyuan County Environmental Monitoring Station,Shangrao 333200,China)

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013 [2]婺源县环境监测站,江西上饶333200

出　　处：《应用化工》2019年第12期2838-2842,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(41867020)

摘　　要：以橘子皮、碱性氧化橘子皮的吸附废水中Pb^2+,研究吸附剂投加量、pH、吸附时间等对Pb 2+去除率的影响吸附。结果表明,在初始离子浓度50 mg/L,投加量为1.0 g/L,pH 5.5,温度30℃,吸附时间2 h时,碱性氧化改性的橘子皮比普通橘子皮对Pb 2+的吸附效果更佳,去除率达到98.52%。准二级动力学方程和Langmuir吸附等温模型更加符合吸附过程。吸附过程是单分子层吸附,以化学吸附为主。The adsorption of Pb^2+ in wastewater from orange peel and alkaline oxidized orange peel was conducted to study the effects of adsorbent dosage,pH and adsorption time on the removal rate of Pb^2+ .The results showed that at the initial ion concentration of 50 mg/L,dosage of 1.0 g/L,pH 5.5,temperature of 30 ℃ and adsorption time of 2 h,the adsorption effect of alkaline oxidation modified orange peel on Pb 2+ was better than that of ordinary orange peel,and the removal rate reached 98.52%.The quasi-second order kinetic equation and Langmuir adsorption isothermal model are more suitable for the adsorption process.The adsorption process is single molecular layer adsorption,mainly chemical adsorption.

关 键 词：橘子皮 碱性氧化 吸附 PB^2+ 

分 类 号：TQ09[化学工程] X703[环境科学与工程—环境工程]