工业水处理 ›› 2011, Vol. 31 ›› Issue (10): 71-74. doi: 10.11894/1005-829x.2011.31(10).71

• 试验研究 • 上一篇    下一篇

N-羧乙基壳聚糖对重金属汞离子絮凝效果的研究

嵇胜全1, 朱爱萍2, 潘颖楠2   

  1. 1. 扬州市产品质量监督检验所,江苏扬州225001;

    2. 扬州大学化学化工学院,江苏扬州225002
  • 收稿日期:2011-07-20 出版日期:2011-10-20 发布日期:2011-10-25
  • 通讯作者: 朱爱萍,教授。E-mail:apzhu@yzu.edu.cn。 E-mail:jsyzzjs@sina.com;apzhu@yzu.edu.cn
  • 作者简介:嵇胜全(1964- ),1988 年毕业于江苏化工学院,建材室主任, 工程师。电话:13951053045,E-mail:jsyzzjs@sina.com。
  • 基金资助:

    国家科技部科技计划项目( 2009GJC10036 ) ; 江苏省科技厅创新基金( SBK200930208 ) ; 江苏省科技厅自然科学基金 (SBC200910282)

Study of the flocculation behavior of N-carboxyethylchitosan for the heavy metal mercury ions

Ji Shengquan1, Zhu Aiping2, Pan Yingnan2   

  1. 1. Yangzhou Product Quality Supervision and Testing Institute, Yangzhou 225001, China;
    2 . College of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225002, China
  • Received:2011-07-20 Online:2011-10-20 Published:2011-10-25

摘要:

N-羧乙基壳聚糖(NCECS)分子结构中既有氨基又有羧基, 是一种两性的壳聚糖衍生物,具有生物相容性、生物降解性、无毒性等特点。合成了一种部分取代的NCECS,用傅里叶红外光谱(FTIR)、元素分析仪对其结构及取代度进行了表征, 重点研究了NCECS 浓度、絮凝时间、pH 等因素对重金属Hg2+ 的去除率的影响, 并探讨了NCECS 对重金属的吸附机理,指出NCECS 是一种生物相容的废水处理剂。

关键词: N-羧乙基壳聚糖, 絮凝, 汞离子, 废水处理

Abstract:

N-carboxyethylchitosan (NCECS) is a kind of amphiphilic chitosan derivative having both amino and carboxyl groups. It is biocompatible,biodegradable,and nontoxic. NCECS which is partly substituted has been prepared. Its structure and substitute value are characterized by FTIR and element analyzer. The effects of the influencing factors,such as NCECS concentration,flocculation time,pH,etc. on the removal rate of mercury ions are investigated. The adsorption mechanism of NCECS on heavy metals is investigated. NCECS is a kind of biocompatible wastewater treatment agent.

Key words: N-carboxyethylchitosan, flocculation, mercury ions, wastewater treatment

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