[1]可欣,张昀,李培军,等.板栗内皮去除酸性废液中重金属离子机理研究[J].深圳大学学报理工版,2009,26(1):72-76.
 KE Xin,ZHANG Yun,LI Pei-jun,et al.Study on mechanism of chestnut inner shells removal of heavy metals from acidic solutions[J].Journal of Shenzhen University Science and Engineering,2009,26(1):72-76.
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板栗内皮去除酸性废液中重金属离子机理研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第26卷
期数:
2009年1期
页码:
72-76
栏目:
化学与化工
出版日期:
2009-01-30

文章信息/Info

Title:
Study on mechanism of chestnut inner shells removal of heavy metals from acidic solutions
文章编号:
1000-2618(2009)01-0072-05
作者:
可欣1张昀3李培军2李润东1
1)沈阳航空工业学院辽宁省清洁能源重点实验室,沈阳 110136;
2)中国科学院沈阳应用生态研究所,沈阳110016;3.沈阳农业大学,沈阳110016
Author(s):
KE Xin1ZHANG Yun3LI Pei-jun2and LI Run-dong1
1)Shenyang Institute ofAeronautical Engineering,Liaoning Key Laboratory of Clean Energy,Shenyang 110136,P.R.China
2)Shenyang Institute of Applied Ecology Chinese Academy of Science,Shenyang 110016,P.R.China
3)Shenyang Agriculture University,Shenyang 110161,P.R.China
关键词:
板栗内皮螯合离子交换酸性废液重金属
Keywords:
chestnut inner shellscomplexion exchangeacidic solutionheavy metal
分类号:
X 131
文献标志码:
A
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.
Abstract:
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+ releasing into the solution simultaneously. This result showed that ion exchange was a most important mechanism for chestnut inner shells adsorption of heavy metals. However,the process of chestnut inner shells adsorption heavy metals was so complex that ion exchange was not the only mechanism. The result from infrared spectrum showed that there were many functional groups in the surface of chestnut inner shells,such as carboxyl and amine,which could be complex with heavy metals. Therefore,the mechanism for chestnut inner shells heavy metals adsorption could be ion exchange combining with chelation.

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备注/Memo

备注/Memo:
收稿日期:2008-11-20
基金项目:国家973计划资助项目(2004CB418506);辽宁省自然科学基金资助项目(20072014)
作者简介:可欣(1978-),男(汉族),辽宁省沈阳市人,沈阳航空工业学院副教授、博士. E-mail:kex@iae.ac.cn
更新日期/Last Update: 2009-02-16