摘要
以废弃物花生壳为吸附剂来吸附水溶液中的铀,研究了花生壳加入量、溶液pH、铀初始质量浓度以及吸附时间等因素对铀吸附效果的影响。结果表明,花生壳对铀具有较好的吸附效果,当pH=4.0、花生壳用量为4 g.L-1、粒径为0.15～0.3 mm、铀初始质量浓度为30 mg.L-1、吸附时间为2.0 h时,铀的去除率达到了97.8%。等温吸附研究表明,花生壳对铀的吸附行为更符合Langmuir等温吸附方程,说明花生壳对铀的吸附是以单分子层吸附(化学吸附)为主,通过拟合得出最大吸附量为5.05 mg.g-1。
Uranium in aqueous solution was adsorbed using waste peanut shells, the paper studied the adsorption effect of the dosage of adsorbent, pH value, initial concentration of uranium and adsorption time on uranium. The results showed that： the peanut shells had better adsorption effect on uranium, When pH was 4.0 ,the initial concentration of uranium was 30 mg·L-1, the dosage of adsorbent was 4 g·L-1 and the adsorption time was 2.0 h, the removal reached 97.8%, The isothermal adsorption study showed that the adsorption behavior of uranium by peanut shells was more accord with Langmuir isothermal adsorption equation. It was said that adsorption of uranium by peanut shells was single molecule layer absorption （chemical adsorption） primarily, the most adsorption capacity was 5.05 mg·L-1 by fit.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第3期38-40,44,共4页
Technology of Water Treatment
基金
核资源与环境省部共建国家重点实验室培育基地开资助项目(101111)
国家自然基金项目(41162007)
放射性地质勘探与技术国防重点学科实验室项目(2011RGET06)
关键词
花生壳
铀
吸附
去除率
peanut shells
uranium
adsorption
removal rate
