摘要
通过吸附过程中的质量平衡实验和红外扫描分析,揭示板栗内皮吸附重金属的机理.质量平衡实验表明,板栗内皮吸附重金属离子存在明显的离子交换过程,在吸附重金属离子和溶液中氢离子的同时,释放出Ca2+、Mg2+和K+3种离子.红外扫描分析结果显示,板栗内皮表面存在很多活性基团,如羟基、-NH基等,这些基团可以和重金属离子发生螯合反应.研究结果表明,板栗内皮吸附重金属离子的机制是离子交换和螯合反应的互相耦合.
Many lab-scale experiments showed that chestnut inner shells was a potential sorbent which could be used to remove heavy metals from acidic solutions.Yet it was still not very clear for its adsorption mechanism,and it was necessary to reveal it.The infrared spectrum of chestnut inner shells and mass balance adsorption tests were studied to reveal the adsorption mechanism in this paper.The results of mass balance adsorption tests showed that H+ and Pb2+ were adsorbed by chestnut inner shells with Ca2+,Mg2+,K...
出处
《深圳大学学报（理工版）》
EI
CAS
北大核心
2009年第1期72-76,共5页
Journal of Shenzhen University(Science and Engineering)
基金
国家973计划资助项目(2004CB418506)
辽宁省自然科学基金资助项目(20072014)
关键词
板栗内皮
螯合
离子交换
酸性废液
重金属
chestnut inner shells
complex
ion exchange
acidic solution
heavy metal
