改性稻壳对废水中铀的吸附性能.pdf

改性稻壳对废水中铀的吸附性能.PDF第 27 卷第 4 期济南大学学报自然科学版 Vol. 27 No. 4
年月
2013 10 JOURNAL OF UNIVERSITY OF JINAN Sci. & Tech. Oct. 2013
文章编号 1671 - 3559 2013 04 - 0386 - 04
改性稻壳对废水中铀的吸附性能
龙逸云,李金轩,李小燕
,
东华理工大学水文与环境工程学院江西南昌 330013
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。
关键词改性稻壳铀吸附去除率等温吸附
中图分类号 TQ424 X771 文献标志码 A
Adsorptive Property of Modified Chaff for Uranium in Waste Water
, ,
LONG Yiyun LI Jinxuan LI Xiaoyan
, , ,
East China Institute of Technology Academy of Hydrology and Environment Nanchang 330013 China
, ,
Abstract 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.

Key words modified chaff uranium removal rate isothermal adsorption
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