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左卫元, 仝海娟, 史兵方. 改性活性炭对废水中铬离子的吸附[J]. 环境工程学报, 2015, 9(1): 45-50. doi: 10.12030/j.cjee.20150108
引用本文: 左卫元, 仝海娟, 史兵方. 改性活性炭对废水中铬离子的吸附[J]. 环境工程学报, 2015, 9(1): 45-50. doi: 10.12030/j.cjee.20150108
shu
Zuo Weiyuan, Tong Haijuan, Shi Bingfang. Cr(Ⅵ) adsorption from aqueous solutions using activated carbon modified with Fe[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 45-50. doi: 10.12030/j.cjee.20150108
Citation: Zuo Weiyuan, Tong Haijuan, Shi Bingfang. Cr(Ⅵ) adsorption from aqueous solutions using activated carbon modified with Fe[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 45-50. doi: 10.12030/j.cjee.20150108
shu

改性活性炭对废水中铬离子的吸附

  • 1.

    百色学院化学与生命科学系, 百色 533000

  • 基金项目:

    国家自然科学基金资助项目(41163007)

    广西自然科学基金资助项目(2012GXNSFAA053036)

    广西高校科学技术研究项目(2013LX156,201010LX505)。

  • 中图分类号: X522

Cr(Ⅵ) adsorption from aqueous solutions using activated carbon modified with Fe

  • 1.

    Department of Chemistry and Life Sciences, Baise University, Baise 533000, China

  • Fund Project:

  • 摘要: 改性活性炭被广泛应用于吸附水体中重金属离子,但关于铁改性活性炭吸附性能的研究报道甚少。本研究对活性炭进行铁改性处理,并将之应用于水中的铬离子吸附,考察了吸附时间、溶液pH对改性活性炭吸附Cr(Ⅵ)效果的影响。实验结果表明,在25℃下,pH为3,吸附时间为300 min时,其对Cr(Ⅵ)的去除率为91.4%。铁改性活性炭对铬离子的吸附机理服从准二级动力学方程,该吸附剂吸附等温线服从Langmuir方程,饱和吸附量为28.82 mg/g。
    Abstract: The activated carbons modified with various types of metals have been widely recognized as the efficient sorbents in the removal of toxic metals from solution. To our best knowledge, few reports are available for the removal of toxic metals by activated carbon modified with iron. In this study, the activated carbon modified with iron was studied as a new sorbent to treat chromium from aqueous solutions. The effects of adsorption time and solution pH on the Cr(Ⅵ) adsorption capability of the modified activated carbon were investigated. Studies showed that the maximum Cr(Ⅵ) removal rate was 91.4% under the following conditions: temperature of 25℃, pH of 30 min, adsorption time of 300 min. All results suggest that the biosorption kinetics of Cr(Ⅵ) by activated carbon modified with iron followed the second-order kinetics model very well and adsorption equilibria were well described by the Langmuir isotherm model. The maximum adsorption capacity was 28.82 mg/g.
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  • 收稿日期:  2014-01-02
  • 刊出日期:  2014-12-30
左卫元, 仝海娟, 史兵方. 改性活性炭对废水中铬离子的吸附[J]. 环境工程学报, 2015, 9(1): 45-50. doi: 10.12030/j.cjee.20150108
引用本文: 左卫元, 仝海娟, 史兵方. 改性活性炭对废水中铬离子的吸附[J]. 环境工程学报, 2015, 9(1): 45-50. doi: 10.12030/j.cjee.20150108
shu
Zuo Weiyuan, Tong Haijuan, Shi Bingfang. Cr(Ⅵ) adsorption from aqueous solutions using activated carbon modified with Fe[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 45-50. doi: 10.12030/j.cjee.20150108
Citation: Zuo Weiyuan, Tong Haijuan, Shi Bingfang. Cr(Ⅵ) adsorption from aqueous solutions using activated carbon modified with Fe[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 45-50. doi: 10.12030/j.cjee.20150108
shu

改性活性炭对废水中铬离子的吸附

  • 1. 百色学院化学与生命科学系, 百色 533000
  • 收稿日期:  2014-01-02
基金项目:

国家自然科学基金资助项目(41163007)

广西自然科学基金资助项目(2012GXNSFAA053036)

广西高校科学技术研究项目(2013LX156,201010LX505)。

摘要: 改性活性炭被广泛应用于吸附水体中重金属离子,但关于铁改性活性炭吸附性能的研究报道甚少。本研究对活性炭进行铁改性处理,并将之应用于水中的铬离子吸附,考察了吸附时间、溶液pH对改性活性炭吸附Cr(Ⅵ)效果的影响。实验结果表明,在25℃下,pH为3,吸附时间为300 min时,其对Cr(Ⅵ)的去除率为91.4%。铁改性活性炭对铬离子的吸附机理服从准二级动力学方程,该吸附剂吸附等温线服从Langmuir方程,饱和吸附量为28.82 mg/g。

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