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有机改性凹凸棒土的制备表征及其对4-氯苯酚的吸附

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宋燕, 王海玲, 朱兆连, 孙进. 有机改性凹凸棒土的制备表征及其对4-氯苯酚的吸附[J]. 环境工程学报, 2012, 6(12): 4481-4486.
引用本文: 宋燕, 王海玲, 朱兆连, 孙进. 有机改性凹凸棒土的制备表征及其对4-氯苯酚的吸附[J]. 环境工程学报, 2012, 6(12): 4481-4486.
shu
Song Yan, Wang Hailing, Zhu Zhaolian, Sun Jin. Preparation and characterization of modified attapulgite and its adsorption to 4-chlorophenol[J]. Chinese Journal of Environmental Engineering, 2012, 6(12): 4481-4486.
Citation: Song Yan, Wang Hailing, Zhu Zhaolian, Sun Jin. Preparation and characterization of modified attapulgite and its adsorption to 4-chlorophenol[J]. Chinese Journal of Environmental Engineering, 2012, 6(12): 4481-4486.
shu

有机改性凹凸棒土的制备表征及其对4-氯苯酚的吸附

  • 1.

    南京工业大学环境学院,江苏省工业节水减排重点实验室,南京 210009

  • 基金项目:

    江苏省高校自然科学研究项目(09KJB610002, 10KJB610004)

    南京工业大学青年教师学术基金资助项目

  • 中图分类号: X786

Preparation and characterization of modified attapulgite and its adsorption to 4-chlorophenol

  • 1.

    Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environment, Nanjing University of Technology, Nanjing 210009, China

  • Fund Project:

  • 摘要: 利用十六烷基三甲基溴化铵(HDTMA)对凹凸棒土进行有机改性,并通过SEM、XRD、FT-IR、表面积及孔径分析对改性前后的凹凸棒土进行结构表征,结果表明,利用HDTMA对凹凸棒土改性仅是表面的负载修饰,并未改变凹凸棒土的内部结构;改性凹土对4-氯苯酚的吸附实验表明,吸附速率很快,30 min即达到吸附平衡,吸附符合准二级动力学方程,吸附等温线符合H型吸附等温方程,在pH为中性的环境下有利于吸附。
    Abstract: The attapulgite was modified by hexadecyl trimethylammonium bromide (HDTMA). The modified attapulgite was characterized by SEM, XRD,FT-IR, specific surface area and pore size distribution. The results showed that HDTMA was loaded on the surface of attpulgite and didn’t change its crystal structure. The adsorption results indicated that adsorption equilibrium of 4-chlorophenols onto the modified attapulgite was achieved within 30 minutes. The adsorption fitted well with the pseudo-second-order kinetic model. The fitted isotherm equation of the adsorption accorded with the Henry absorption model and it is better for adsorption under pH=6.7.
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  • 收稿日期:  2012-01-19
  • 刊出日期:  2012-12-07
宋燕, 王海玲, 朱兆连, 孙进. 有机改性凹凸棒土的制备表征及其对4-氯苯酚的吸附[J]. 环境工程学报, 2012, 6(12): 4481-4486.
引用本文: 宋燕, 王海玲, 朱兆连, 孙进. 有机改性凹凸棒土的制备表征及其对4-氯苯酚的吸附[J]. 环境工程学报, 2012, 6(12): 4481-4486.
shu
Song Yan, Wang Hailing, Zhu Zhaolian, Sun Jin. Preparation and characterization of modified attapulgite and its adsorption to 4-chlorophenol[J]. Chinese Journal of Environmental Engineering, 2012, 6(12): 4481-4486.
Citation: Song Yan, Wang Hailing, Zhu Zhaolian, Sun Jin. Preparation and characterization of modified attapulgite and its adsorption to 4-chlorophenol[J]. Chinese Journal of Environmental Engineering, 2012, 6(12): 4481-4486.
shu

有机改性凹凸棒土的制备表征及其对4-氯苯酚的吸附

  • 1. 南京工业大学环境学院,江苏省工业节水减排重点实验室,南京 210009
  • 收稿日期:  2012-01-19
基金项目:

江苏省高校自然科学研究项目(09KJB610002, 10KJB610004)

南京工业大学青年教师学术基金资助项目

摘要: 利用十六烷基三甲基溴化铵(HDTMA)对凹凸棒土进行有机改性,并通过SEM、XRD、FT-IR、表面积及孔径分析对改性前后的凹凸棒土进行结构表征,结果表明,利用HDTMA对凹凸棒土改性仅是表面的负载修饰,并未改变凹凸棒土的内部结构;改性凹土对4-氯苯酚的吸附实验表明,吸附速率很快,30 min即达到吸附平衡,吸附符合准二级动力学方程,吸附等温线符合H型吸附等温方程,在pH为中性的环境下有利于吸附。

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