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交联羧甲基魔芋葡甘聚糖吸附Cu2+的机理
Mechanism on Adsorption Cu2+ by Crosslinked Carboxymethyl Konjac Glucomannan
【摘要】 研究了CCMKGM对Cu2+的吸附热力学行为,用FTIR和RAMAN对吸附产物进行了结构表征,同时考察了不同解吸剂对吸附于CCMKGM上Cu2+解吸效果的影响。结果表明,CCMKGM主要以配位的形式吸附Cu2+;CCMKGM对Cu2+的吸附行为同时符合Langmuir和Freundlich等温方程;吸附为自发的、吸热的熵增加过程。
【Abstract】 In this paper the adsorption thermodynamics properties of CCMKGM with Cu2+ were investigated.The structure of adsorption products were characterized by the FTIR and RAMAN.The influence of different elution on desorption was stud-ied.The results showed that CCMKGM adsorbed Cu2+ mainly by complication,the experimental date fit well into the Lang-muir and Freundlich adsorption isotherm.The adsorption was a spontaneous endothermic process of increased entropy.
【关键词】 交联羧甲基魔芋葡甘聚糖(CCMKGM)；
Cu2+；
吸附机理；
【Key words】 crosslinked carboxymethyl konjac glucomannan(CCMKGM)； Cu2+； adsorption mechanism；
【Key words】 crosslinked carboxymethyl konjac glucomannan(CCMKGM)； Cu2+； adsorption mechanism；
- 【文献出处】 湖北农业科学 ,Hubei Agricultural Sciences , 编辑部邮箱 ,2009年01期
- 【分类号】O647.311
- 【被引频次】5
- 【下载频次】148