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多孔镁铝复合氧化物对水溶液中Cr(Ⅵ)的吸附性能

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王秀娟, 王海增. 多孔镁铝复合氧化物对水溶液中Cr(Ⅵ)的吸附性能[J]. 环境工程学报, 2013, 7(4): 1383-1388.
引用本文: 王秀娟, 王海增. 多孔镁铝复合氧化物对水溶液中Cr(Ⅵ)的吸附性能[J]. 环境工程学报, 2013, 7(4): 1383-1388.
shu
Wang Xiujuan, Wang Haizeng. Adsorption behavior of Cr(Ⅵ) from aqueous solution on porous Mg/Al mixed oxides[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1383-1388.
Citation: Wang Xiujuan, Wang Haizeng. Adsorption behavior of Cr(Ⅵ) from aqueous solution on porous Mg/Al mixed oxides[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1383-1388.
shu

多孔镁铝复合氧化物对水溶液中Cr(Ⅵ)的吸附性能

  • 1.

    中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室,青岛 266100

  • 基金项目:

    教育部博士点专项基金(20090132110009)

  • 中图分类号: X703

Adsorption behavior of Cr(Ⅵ) from aqueous solution on porous Mg/Al mixed oxides

  • 1.

    Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

  • Fund Project:

摘要

  • 摘要: 以镁盐、铝盐、纯碱和烧碱为原料制备了一种多孔镁铝复合氧化物(P-Mg3.1AlO4.6),其比表面积、平均孔径和总孔容分别为206.3 m2/g、8.961 nm和0.4208 cm3/g。研究了这种多孔材料对水溶液中Cr(Ⅵ)的吸附性能,在25~45℃时,静态吸附量为82.32~141.7 mg/g;当初始浓度100 mg/L、流速5 mL/min、床层高度10 cm和pH=6时,半穿透时间、半穿透吸附量和饱和吸附量分别为406 min、49.28 mg/g和51.30 mg/g;拟合参数及误差分析表明,Cr(Ⅵ)在P-Mg3.1AlO4.6上的静态吸附过程符合Freundlich等温方程式和伪二级动力学方程,Yoon-Nelson模型能很好地预测Cr(Ⅵ)在P-Mg3.1AlO4.6上的动态穿透曲线。
    Abstract: Porous Mg/Al mixed oxides was synthesized by using magnesium salt, aluminum salt, sodium carbonate and sodium hydroxide as raw materials. Its specific surface area, average pore size and total pore volume are 206.3 m2/g, 8.961 nm and 0.4208 cm3/g, respectively. Adsorption behavior of Cr(Ⅵ) on this porous material was investigated. The static adsorption capacity is 82.32~141.7 mg/g from 25℃to 45℃. The half breakthrough time, half adsorption capacity and maximum adsorption capacity are 406 min, 49.28 mg/g and 51.30 mg/g, respectively under conditions of initial concentration of 100 mg/L, flow rate of 5 mL/min, bed height of 10 cm and pH of 6. Fitting parameters and error analysis show that static adsorption process of Cr(Ⅵ) on P-Mg3.1AlO4.6 follows Freundlich isotherm equation and pseudo-second order kinetic equation, and Yoon-Nelson model can predict the breakthrough curves of Cr(Ⅵ) on P-Mg3.1AlO4.6 well.
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出版历程
  • 收稿日期:  2012-03-15
  • 刊出日期:  2013-04-09
王秀娟, 王海增. 多孔镁铝复合氧化物对水溶液中Cr(Ⅵ)的吸附性能[J]. 环境工程学报, 2013, 7(4): 1383-1388.
引用本文: 王秀娟, 王海增. 多孔镁铝复合氧化物对水溶液中Cr(Ⅵ)的吸附性能[J]. 环境工程学报, 2013, 7(4): 1383-1388.
shu
Wang Xiujuan, Wang Haizeng. Adsorption behavior of Cr(Ⅵ) from aqueous solution on porous Mg/Al mixed oxides[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1383-1388.
Citation: Wang Xiujuan, Wang Haizeng. Adsorption behavior of Cr(Ⅵ) from aqueous solution on porous Mg/Al mixed oxides[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1383-1388.
shu

多孔镁铝复合氧化物对水溶液中Cr(Ⅵ)的吸附性能

  • 1. 中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室,青岛 266100
  • 收稿日期:  2012-03-15
基金项目:

教育部博士点专项基金(20090132110009)

摘要: 以镁盐、铝盐、纯碱和烧碱为原料制备了一种多孔镁铝复合氧化物(P-Mg3.1AlO4.6),其比表面积、平均孔径和总孔容分别为206.3 m2/g、8.961 nm和0.4208 cm3/g。研究了这种多孔材料对水溶液中Cr(Ⅵ)的吸附性能,在25~45℃时,静态吸附量为82.32~141.7 mg/g;当初始浓度100 mg/L、流速5 mL/min、床层高度10 cm和pH=6时,半穿透时间、半穿透吸附量和饱和吸附量分别为406 min、49.28 mg/g和51.30 mg/g;拟合参数及误差分析表明,Cr(Ⅵ)在P-Mg3.1AlO4.6上的静态吸附过程符合Freundlich等温方程式和伪二级动力学方程,Yoon-Nelson模型能很好地预测Cr(Ⅵ)在P-Mg3.1AlO4.6上的动态穿透曲线。

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