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Thermodynamics and Kinetics of Copper Sorption by Rice Bran
Author(s): NIE Jin-xia, CHEN Yun-ren, CHEN Ming
Pages: 35-
38
Year: 2008
Issue:
4
Journal: Jiangxi Nonferrous Metals
Keyword: 吸附; 谷壳; 铜; 热力学; 动力学;
Abstract: 应用低成本吸附剂谷壳去除溶液中的重金属铜离子.以间歇吸附的方式考察了溶液pH值、反应时间、反应温度、金属离子初始浓度等物理化学参数对吸附过程的影响.在pH为7.O、温度为328 K、谷壳用量为4 g/L时,溶液中铜离子达到最大吸附去除率.吸附过程符合Langmuir吸附等温模式.吸附热力学表明谷壳对Cu2+的吸附是自发的吸热反应.谷壳对Cu2+的吸附动力学模型能够较好地符合准二级动力学方程.
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