摘要
在静态条件下,研究了泥煤对稀土金属离子Ce4+、Dy3+和Eu2+的吸附特性。结果表明,泥煤对稀土金属离子有较强的吸附性能,pH是影响吸附的主要因素,吸附过程符合动力学一级方程,吸附平衡数据符合Freundlich、Langmuir及DR模型。吸附过程自发不可逆,且放出热量,提高温度对吸附不利。泥煤对三种元素的平衡吸附量不同,讨论了泥煤用于处理稀土元素废水的可行性。
The adsorption of rare earth element Ce （Ⅳ）, Dy （Ⅱ）, Eu （ Ⅱ ） on the peat have been studied under static conditions. The results showed that the pH effects on the adsorption were the most important factor. The kinetic process of adsorption can be described by the pseudo-first order model, and the adsorption isotherm fit the Freundlich, Langmuir and DR equation, The adsorption processes were spontaneous and irreversible with heat evolution. The increase of temperature was not benefit to the adsorption. Different rare earth element has different maximum adsorption. The feasibility of utilizing peat on wastewater with rare earth ion was discussed.
出处
《中国矿业》
北大核心
2006年第3期62-66,共5页
China Mining Magazine
