改性稻壳对废水中铀的吸附性能  

Adsorptive Property of Modified Chaff for Uranium in Waste Water

作　　者：龙逸云[1] 李金轩[1] 李小燕[1] 

机构地区：[1]东华理工大学水文与环境工程学院,江西南昌330013

出　　处：《济南大学学报（自然科学版）》2013年第4期386-389,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(11205030;41162007);核资源与环境教育部共建国家重点实验室培育基地基金(101111)

摘　　要：以改性稻壳作为吸附剂吸附水中的铀,考察稻壳质量浓度、pH值、铀初始质量浓度、吸附时间和温度等因素对铀去除效果的影响,从热力学角度分析吸附过程。结果表明:改性稻壳对铀有较好的吸附效果,在温度为30℃、pH=5.0、吸附100 min时吸附效果最好,去除率为98%;吸附过程符合Langmuir等温吸附模型,表明稻壳对铀的吸附是以单分子层化学吸附为主。Using modified chaff as adsorbent to adsorb the uranium in waste water,we study the influence of adsorbent dosage,pH value,initial concentration,adsorption time and temperature on the removal rate,and analyze the adsorption process from the point view of thermodynamics.The results show that modified chaff has good adsorption capacity for uranium,with the best removal rate up to 98% at 30 ℃,pH=5.0,and 100 min adsorption time;and that the adsorption process meets with the Langmuir isothermal adsorption model,which implies this process is a chemical adsorption in monomolecular layer.

关 键 词：改性稻壳 铀 吸附 去除率 等温吸附 

分 类 号：X703[环境科学与工程—环境工程]