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Mg/Al/Fe型类水滑石焙烧产物吸附去除水中硫酸根离子

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于洋, 岳秀萍, 刘吉明, 曹岳. Mg/Al/Fe型类水滑石焙烧产物吸附去除水中硫酸根离子[J]. 环境工程学报, 2013, 7(8): 3079-3084.
引用本文: 于洋, 岳秀萍, 刘吉明, 曹岳. Mg/Al/Fe型类水滑石焙烧产物吸附去除水中硫酸根离子[J]. 环境工程学报, 2013, 7(8): 3079-3084.
shu
Yu Yang, Yue Xiuping, Liu Jiming, Cao Yue. Removal of sulfate ions from aqueous solution via adsorption on calcined Mg/Al/Fe hydrotalcite-like compounds[J]. Chinese Journal of Environmental Engineering, 2013, 7(8): 3079-3084.
Citation: Yu Yang, Yue Xiuping, Liu Jiming, Cao Yue. Removal of sulfate ions from aqueous solution via adsorption on calcined Mg/Al/Fe hydrotalcite-like compounds[J]. Chinese Journal of Environmental Engineering, 2013, 7(8): 3079-3084.
shu

Mg/Al/Fe型类水滑石焙烧产物吸附去除水中硫酸根离子

  • 1.

    太原理工大学环境科学与工程学院, 太原 030024

  • 2.

    太原理工大学现代科技学院, 太原 030021

  • 基金项目:

  • 中图分类号: X52

Removal of sulfate ions from aqueous solution via adsorption on calcined Mg/Al/Fe hydrotalcite-like compounds

  • 1.

    College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

  • 2.

    College of Morden Science and Technology, Taiyuan University of Technology, Taiyuan 030021, China

  • Fund Project:

摘要

  • 摘要: 通过共沉淀法制备了Mg/Al/Fe型类水滑石(MgAlFe-HTLCs)并在500℃下焙烧得焙烧产物(HTLCs-500),利用HTLCs-500吸附去除水中的硫酸根离子,并用X射线衍射对MgAlFe-HTLCs及HTLCs-500吸附硫酸根离子前后的结构进行了表征,研究了环境中其他因素对HTLCs-500吸附硫酸根离子的影响。结果表明,实验数据对准二级动力学模型的拟合结果最好;吸附过程符合Langmuir吸附等温模型,通过实验得到HTLCs-500对硫酸根离子的最大吸附量为157.73 mg/g,和Langmuir等温线得到的理论最大吸附量161.29 mg/g相差不大,对硫酸根离子具有良好的吸附性能;硫酸根溶液的初始pH值对HTLCs-500吸附硫酸根离子的性能影响不大,最佳pH值为3;X射线衍射结果表明,HTLCs-500吸附去除硫酸根离子的机理之一为HTLCs-500通过吸附硫酸根离子来恢复层状结构。
    Abstract: Mg/Al/Fe hydrotalcite-like compounds(MgAlFe-HTLCs) were synthesized via coprecipitation method and The product(HTLCs-500) was obtained when the hydrotalcite-like compounds were calcined at 500℃. Sulfate ions were removed from aqueous solution via adsorption on HTLCs-500 and the structure of MgAlFe-HTLCs and HTLCs-500 before and after adsorption of sulfate ions was characterized by X-ray diffraction.Effects of other factors in the environment on the adsorption of sulfate ions on HTLCs-500 were studied.The results showed that experimental data has a best fitting result with pseudo-second-order kinetics model.The adsorption process is consistant with Langmuir adsorption isotherm model.The experimental adsorption capacity of HTLCs-500 for sulfate ions is 157.73 mg/g and the theoretical adsorption capacity of Langmuir isotherm is 161.29 mg/g,they are very close. HTLCs-500 has a good adsorption property for sulfate ions.The original pH of sulfate solution has little impact on adsorption of sulfate ions on HTLCs-500 and the optimum pH is 3.The results of X-ray diffaction show that one of mechanisms for adsorption of sulfate ions on HTLCs-500 is that HTLCs-500 regains the layer structure by adsorping sulfate ions.
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出版历程
  • 收稿日期:  2012-09-27
  • 刊出日期:  2013-08-12
于洋, 岳秀萍, 刘吉明, 曹岳. Mg/Al/Fe型类水滑石焙烧产物吸附去除水中硫酸根离子[J]. 环境工程学报, 2013, 7(8): 3079-3084.
引用本文: 于洋, 岳秀萍, 刘吉明, 曹岳. Mg/Al/Fe型类水滑石焙烧产物吸附去除水中硫酸根离子[J]. 环境工程学报, 2013, 7(8): 3079-3084.
shu
Yu Yang, Yue Xiuping, Liu Jiming, Cao Yue. Removal of sulfate ions from aqueous solution via adsorption on calcined Mg/Al/Fe hydrotalcite-like compounds[J]. Chinese Journal of Environmental Engineering, 2013, 7(8): 3079-3084.
Citation: Yu Yang, Yue Xiuping, Liu Jiming, Cao Yue. Removal of sulfate ions from aqueous solution via adsorption on calcined Mg/Al/Fe hydrotalcite-like compounds[J]. Chinese Journal of Environmental Engineering, 2013, 7(8): 3079-3084.
shu

Mg/Al/Fe型类水滑石焙烧产物吸附去除水中硫酸根离子

  • 1. 太原理工大学环境科学与工程学院, 太原 030024
  • 2. 太原理工大学现代科技学院, 太原 030021
  • 收稿日期:  2012-09-27
基金项目:

摘要: 通过共沉淀法制备了Mg/Al/Fe型类水滑石(MgAlFe-HTLCs)并在500℃下焙烧得焙烧产物(HTLCs-500),利用HTLCs-500吸附去除水中的硫酸根离子,并用X射线衍射对MgAlFe-HTLCs及HTLCs-500吸附硫酸根离子前后的结构进行了表征,研究了环境中其他因素对HTLCs-500吸附硫酸根离子的影响。结果表明,实验数据对准二级动力学模型的拟合结果最好;吸附过程符合Langmuir吸附等温模型,通过实验得到HTLCs-500对硫酸根离子的最大吸附量为157.73 mg/g,和Langmuir等温线得到的理论最大吸附量161.29 mg/g相差不大,对硫酸根离子具有良好的吸附性能;硫酸根溶液的初始pH值对HTLCs-500吸附硫酸根离子的性能影响不大,最佳pH值为3;X射线衍射结果表明,HTLCs-500吸附去除硫酸根离子的机理之一为HTLCs-500通过吸附硫酸根离子来恢复层状结构。

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