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盐酸和硝酸介质中己二胺接枝壳聚糖微球吸附Hg(Ⅱ)的行为

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张梦霜, 李步海. 盐酸和硝酸介质中己二胺接枝壳聚糖微球吸附Hg(Ⅱ)的行为[J]. 环境工程学报, 2012, 6(4): 1202-1206.
引用本文: 张梦霜, 李步海. 盐酸和硝酸介质中己二胺接枝壳聚糖微球吸附Hg(Ⅱ)的行为[J]. 环境工程学报, 2012, 6(4): 1202-1206.
shu
Zhang Mengshuang, Li Buhai. 1，6-diaminohexane-modified chitosan microspheres for adsorption of Hg(Ⅱ) in the medium of hydrcoloric and nitric acid[J]. Chinese Journal of Environmental Engineering, 2012, 6(4): 1202-1206.
Citation: Zhang Mengshuang, Li Buhai. 1，6-diaminohexane-modified chitosan microspheres for adsorption of Hg(Ⅱ) in the medium of hydrcoloric and nitric acid[J]. Chinese Journal of Environmental Engineering, 2012, 6(4): 1202-1206.
shu

盐酸和硝酸介质中己二胺接枝壳聚糖微球吸附Hg(Ⅱ)的行为

  • 1.

    中南民族大学化学与材料科学学院，分析化学国家民委重点实验室，武汉 430074

  • 基金项目:

    国家民委院校科研基金资助项目（MJY00004）

  • 中图分类号: X703

1，6-diaminohexane-modified chitosan microspheres for adsorption of Hg(Ⅱ) in the medium of hydrcoloric and nitric acid

  • 1.

    Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission， College of Chemistry and Materials Science， South-central University for Nationalities，Wuhan 430074， China

  • Fund Project:

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  • 摘要: 制备并表征了氯化和氨化壳聚糖微球，考察了己二胺接枝壳聚糖微球（HAD-CS）在盐酸和硝酸介质中吸附Hg(Ⅱ)的行为及影响因素。结果表明，盐酸介质中， pH 3.0时，HAD-CS对Hg(Ⅱ)有较高的初始吸附速率，最大吸附容量为128.6 mg/g；硝酸介质中，pH 3.5时，它对Hg(Ⅱ)的最大吸附容量为37.7 mg/g。前者是后者的3.4倍。以1.0 mol/L的H2SO4为解吸剂，HAD-CS复用3次无溶解和流失现象。HAD-CS对Hg(Ⅱ)的吸附主要是质子化氨基与汞配阴离子以静电引力实现的。
    Abstract: Ammoniation and chlorination-modified chitosan microspheres were prepared and characterized.In the medium of hydrochloric and nitric acid the adsorption behaviour and influence factors of hexamethylene diamine-modified chitosan microspheres(HAD-CS) for enhancement of Hg(Ⅱ) were investigated.The results indicated that HAD-CS had higher adsorption rate of Hg(Ⅱ) at pH 3.0， the maximum adsorption capatities were 128.6 mg/g in hydrochloric medium； but the maximum adsorption capatities were only 37.7 mg/g in nitric acid medium(pH 3.5). The adsorption capacies of the former was 3.4 times of the latter.The regeneration experimets were carried out for three cycles by using 1.0 mol/L H2SO4 solution as eluent， the adsorbent had no dissolution and running off. The adsorption of HAD-CS for Hg(Ⅱ) could be carried out by a electrostatic attaction between amino-group of peotonation the surface of on HAD-CS and the complex anion of Hg(Ⅱ) with chlorine anion.
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  • 收稿日期:  2011-01-16
张梦霜, 李步海. 盐酸和硝酸介质中己二胺接枝壳聚糖微球吸附Hg(Ⅱ)的行为[J]. 环境工程学报, 2012, 6(4): 1202-1206.
引用本文: 张梦霜, 李步海. 盐酸和硝酸介质中己二胺接枝壳聚糖微球吸附Hg(Ⅱ)的行为[J]. 环境工程学报, 2012, 6(4): 1202-1206.
shu
Zhang Mengshuang, Li Buhai. 1，6-diaminohexane-modified chitosan microspheres for adsorption of Hg(Ⅱ) in the medium of hydrcoloric and nitric acid[J]. Chinese Journal of Environmental Engineering, 2012, 6(4): 1202-1206.
Citation: Zhang Mengshuang, Li Buhai. 1，6-diaminohexane-modified chitosan microspheres for adsorption of Hg(Ⅱ) in the medium of hydrcoloric and nitric acid[J]. Chinese Journal of Environmental Engineering, 2012, 6(4): 1202-1206.
shu

盐酸和硝酸介质中己二胺接枝壳聚糖微球吸附Hg(Ⅱ)的行为

  • 1. 中南民族大学化学与材料科学学院，分析化学国家民委重点实验室，武汉 430074
  • 收稿日期:  2011-01-16
基金项目:

国家民委院校科研基金资助项目（MJY00004）

摘要: 制备并表征了氯化和氨化壳聚糖微球，考察了己二胺接枝壳聚糖微球（HAD-CS）在盐酸和硝酸介质中吸附Hg(Ⅱ)的行为及影响因素。结果表明，盐酸介质中， pH 3.0时，HAD-CS对Hg(Ⅱ)有较高的初始吸附速率，最大吸附容量为128.6 mg/g；硝酸介质中，pH 3.5时，它对Hg(Ⅱ)的最大吸附容量为37.7 mg/g。前者是后者的3.4倍。以1.0 mol/L的H2SO4为解吸剂，HAD-CS复用3次无溶解和流失现象。HAD-CS对Hg(Ⅱ)的吸附主要是质子化氨基与汞配阴离子以静电引力实现的。

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