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改性壳聚糖处理污水中Ni(Ⅱ)的效果

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张燕, 张军丽, 潘庆才, 闫凤美. 改性壳聚糖处理污水中Ni(Ⅱ)的效果[J]. 环境工程学报, 2012, 6(9): 3091-3095.
引用本文: 张燕, 张军丽, 潘庆才, 闫凤美. 改性壳聚糖处理污水中Ni(Ⅱ)的效果[J]. 环境工程学报, 2012, 6(9): 3091-3095.
shu
Zhang Yan, Zhang Junli, Pan Qingcai, Yan Fengmei. Treatment effect of Ni(Ⅱ) in wastewater by modified chitosan sorbent[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3091-3095.
Citation: Zhang Yan, Zhang Junli, Pan Qingcai, Yan Fengmei. Treatment effect of Ni(Ⅱ) in wastewater by modified chitosan sorbent[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3091-3095.
shu

改性壳聚糖处理污水中Ni(Ⅱ)的效果

  • 1.

    黄淮学院化学化工系,驻马店 463000

  • 基金项目:

    河南省科技计划项目(082300420120)

    河南省科技发展计划项目(112102310649,122300410209)

  • 中图分类号: X703

Treatment effect of Ni(Ⅱ) in wastewater by modified chitosan sorbent

  • 1.

    Department of Chemistry and Chemical Engineering, Huanghuai College, Zhumadian 463000, China

  • Fund Project:

  • 摘要: 通过丁二酸酐与γ-氨丙基三甲氧基硅烷改性后的纳米SiO2(即可分散的纳米二氧化硅,简称DNS)反应,合成了羧基化的DNS,再经过与壳聚糖脱水生成酰胺的过程,合成了改性壳聚糖。通过红外光谱和扫描电镜对改性壳聚糖进行表征。研究了壳聚糖及改性壳聚糖微粒吸附Ni2+时溶液pH值、时间、吸附剂用量和Ni2+初始浓度等对吸附率的影响,并确定了最佳条件为:pH =7,吸附时间为120 min,吸附剂的投加量为0.3 g。改性壳聚糖比壳聚糖具有更强的吸附Ni2+的能力,吸附率达67.01%。
    Abstract: Carboxyl DNS was prepared by the reaction between carboxylic anhydride and Nano-SiO2 modified withγ-aminopropyltrimethoxysilane (the dispersible nano-SiO2, DNS). Then modified chitosan was synthesized by mixed carboxyl DNS particles and chitosan through dehydration to acyl amine. The modified chitosan was characterized with FTIR and SEM. By the experiment,four factors such as pH,adsorption time, initial Ni2+ concentration and dosage of composite adsorbent on Ni2+ were investigated.The best adsorption conditions were the pH value of 7,the adsorption time of 2 h, and the adsorbent dosage 0.3 g. Modified chitosan had stronger adsorption ability to Ni2+ than chitosan, its adsorption rate was 67.01%.
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出版历程
  • 收稿日期:  2011-05-04
  • 刊出日期:  2012-09-14
张燕, 张军丽, 潘庆才, 闫凤美. 改性壳聚糖处理污水中Ni(Ⅱ)的效果[J]. 环境工程学报, 2012, 6(9): 3091-3095.
引用本文: 张燕, 张军丽, 潘庆才, 闫凤美. 改性壳聚糖处理污水中Ni(Ⅱ)的效果[J]. 环境工程学报, 2012, 6(9): 3091-3095.
shu
Zhang Yan, Zhang Junli, Pan Qingcai, Yan Fengmei. Treatment effect of Ni(Ⅱ) in wastewater by modified chitosan sorbent[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3091-3095.
Citation: Zhang Yan, Zhang Junli, Pan Qingcai, Yan Fengmei. Treatment effect of Ni(Ⅱ) in wastewater by modified chitosan sorbent[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3091-3095.
shu

改性壳聚糖处理污水中Ni(Ⅱ)的效果

  • 1. 黄淮学院化学化工系,驻马店 463000
  • 收稿日期:  2011-05-04
基金项目:

河南省科技计划项目(082300420120)

河南省科技发展计划项目(112102310649,122300410209)

摘要: 通过丁二酸酐与γ-氨丙基三甲氧基硅烷改性后的纳米SiO2(即可分散的纳米二氧化硅,简称DNS)反应,合成了羧基化的DNS,再经过与壳聚糖脱水生成酰胺的过程,合成了改性壳聚糖。通过红外光谱和扫描电镜对改性壳聚糖进行表征。研究了壳聚糖及改性壳聚糖微粒吸附Ni2+时溶液pH值、时间、吸附剂用量和Ni2+初始浓度等对吸附率的影响,并确定了最佳条件为:pH =7,吸附时间为120 min,吸附剂的投加量为0.3 g。改性壳聚糖比壳聚糖具有更强的吸附Ni2+的能力,吸附率达67.01%。

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