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改进型生物质阴离子交换纤维制备及吸附性能

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陈卓, 许丹, 张敏, 夏世斌. 改进型生物质阴离子交换纤维制备及吸附性能[J]. 环境工程学报, 2014, 8(5): 1727-1731.
引用本文: 陈卓, 许丹, 张敏, 夏世斌. 改进型生物质阴离子交换纤维制备及吸附性能[J]. 环境工程学报, 2014, 8(5): 1727-1731.
shu
Chen Zhuo, Xu Dan, Zhang Min, Xia Shibin. Preparation and adsorption properties of improved anion exchange fiber from biomass[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1727-1731.
Citation: Chen Zhuo, Xu Dan, Zhang Min, Xia Shibin. Preparation and adsorption properties of improved anion exchange fiber from biomass[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1727-1731.
shu

改进型生物质阴离子交换纤维制备及吸附性能

  • 1.

    武汉理工大学资源与环境工程学院, 武汉 430070

  • 基金项目:

    “十二五”国家科技支撑计划项目（2013BAC01B00）

  • 中图分类号: TQ342+.84

Preparation and adsorption properties of improved anion exchange fiber from biomass

  • 1.

    School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China

  • Fund Project:

  • 摘要: 用氢氧化钠水溶液预处理，以乙二胺作交联剂，采用环氧氯丙烷和二甲胺对网状植物丝瓜络纤维进行化学改性，制备出改性丝瓜络阴离子交换纤维（LS-AEF），重点探讨了LS-AEF的形态特征并对其形态特征进行了表征分析，还考察了碱预处理对产品吸附水体中的NO3-的影响。研究结果表明，（1）LS-AEF引入带正电的胺基基团，可以提高对NO3-的吸附性能；（2）乙二胺剂量对产品吸附性能影响比较大，最佳剂量为9 mL，吸附率达到75%；（3）碱性预处理能够显著提高产品的吸附性能，碱处理前后的产品吸附率分别为76%和85%；（4）吸附过程符合伪二级动力学方程。
    Abstract: Luffa sponge anion exchange fiber (LS-AEF) was prepared by alkali pretreatment of sodium hydroxide and the grafting of epichlorohydrin and ethylenediamine onto luffa sponge fiber (LSF). Characterizations of LS-AEF, its adsorption capacities for NO3- and the influence of alkali pretreatment on it were investigated. The results indicate that amine groups with positive-charge are introduced into the structure of LS-AEF, and increase its anion adsorption property. The functions of ethylenediamine dosage and the alkali pretreatment show great influence on the adsorption process. When the ethylenediamine dosage is 9 ml, the adsorption rate can achieve 75%. The adsorption rate of the product without alkali treatment is 76%, while the adsorption rate of the alkali-treated product can reach 86%. The adsorption is well fitted with the pseudo second-order model.
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  • 收稿日期:  2013-05-30
  • 刊出日期:  2014-05-06
陈卓, 许丹, 张敏, 夏世斌. 改进型生物质阴离子交换纤维制备及吸附性能[J]. 环境工程学报, 2014, 8(5): 1727-1731.
引用本文: 陈卓, 许丹, 张敏, 夏世斌. 改进型生物质阴离子交换纤维制备及吸附性能[J]. 环境工程学报, 2014, 8(5): 1727-1731.
shu
Chen Zhuo, Xu Dan, Zhang Min, Xia Shibin. Preparation and adsorption properties of improved anion exchange fiber from biomass[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1727-1731.
Citation: Chen Zhuo, Xu Dan, Zhang Min, Xia Shibin. Preparation and adsorption properties of improved anion exchange fiber from biomass[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1727-1731.
shu

改进型生物质阴离子交换纤维制备及吸附性能

  • 1. 武汉理工大学资源与环境工程学院, 武汉 430070
  • 收稿日期:  2013-05-30
基金项目:

“十二五”国家科技支撑计划项目（2013BAC01B00）

摘要: 用氢氧化钠水溶液预处理，以乙二胺作交联剂，采用环氧氯丙烷和二甲胺对网状植物丝瓜络纤维进行化学改性，制备出改性丝瓜络阴离子交换纤维（LS-AEF），重点探讨了LS-AEF的形态特征并对其形态特征进行了表征分析，还考察了碱预处理对产品吸附水体中的NO3-的影响。研究结果表明，（1）LS-AEF引入带正电的胺基基团，可以提高对NO3-的吸附性能；（2）乙二胺剂量对产品吸附性能影响比较大，最佳剂量为9 mL，吸附率达到75%；（3）碱性预处理能够显著提高产品的吸附性能，碱处理前后的产品吸附率分别为76%和85%；（4）吸附过程符合伪二级动力学方程。

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