Removal of hexavalent chromium in soil by lignin-based weakly acidic cation exchange resin

Nawei Chen; Guo Qiu; Chongpin Huang; Li Liu; Guangchao Li; Biaohua Chen

doi:10.1016/j.cjche.2019.02.021

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Removal of hexavalent chromium in soil by lignin-based weakly acidic cation exchange resin

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Removal of hexavalent chromium in soil by lignin-based weakly acidic cation exchange resin
- Removal of hexavalent chromium in soil by lignin-based weakly acidic cation exchange resin
- 中国化学工程学报（英文版） 2019年27卷第10期页码：2544-2550
- Affiliations：
  
  State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.02.021
  中图分类号：
- 纸质出版：2019
- Accepted：
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Nawei Chen, Guo Qiu, Chongpin Huang, 等. Removal of hexavalent chromium in soil by lignin-based weakly acidic cation exchange resin[J]. 中国化学工程学报（英文版）, 2019,27(10):2544-2550.

Nawei Chen, Guo Qiu, Chongpin Huang, Li Liu, Guangchao Li, Biaohua Chen. Removal of hexavalent chromium in soil by lignin-based weakly acidic cation exchange resin[J]. Chinese Journal of Chemical Engineering, 2019, 27(10): 2544-2550.
Nawei Chen, Guo Qiu, Chongpin Huang, 等. Removal of hexavalent chromium in soil by lignin-based weakly acidic cation exchange resin[J]. 中国化学工程学报（英文版）, 2019,27(10):2544-2550. DOI： 10.1016/j.cjche.2019.02.021.

Nawei Chen, Guo Qiu, Chongpin Huang, Li Liu, Guangchao Li, Biaohua Chen. Removal of hexavalent chromium in soil by lignin-based weakly acidic cation exchange resin[J]. Chinese Journal of Chemical Engineering, 2019, 27(10): 2544-2550. DOI： 10.1016/j.cjche.2019.02.021.

摘要

Abstract

The adsorption of Cr(VI) from soil onto lignin-based weakly acidic cation exchange resin (LBR) has been investigated. Lignin is a three-dimensional amorphous polymer composed of methoxylated phenylpropane units. The unique structure and chemical properties render the lignin suitable for the remediation of hexavalent chromium in the soil. Soil column leaching experiments were conducted to optimize the adsorption conditions. The effects of contact time

adsorbent dosage and temperature on the adsorption of Cr(VI) onto the LBR have been investigated. Experiment data were then correlated with Freundlich and Langmuir isotherms. The Langmuir isotherm model fits the experimental data better than the Freundlich isotherm. It was found that the LBR has a high adsorption capability for Cr(VI) (3.95 mg·g

-1

) with a removal rate of 91.9%. Thus

LBR can serve as a good absorbent for the reduction of the concentration of Cr(VI) in soil.

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