Adsorption of cadmium ions from aqueous solutions by activated carbon with oxygen-containing functional groups

Yu Bian; Zhaoyong Bian; Junxiao Zhang; Aizhong Ding; Shaolei Liu; Lei Zheng; Hui Wang

doi:10.1016/j.cjche.2015.08.031

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Adsorption of cadmium ions from aqueous solutions by activated carbon with oxygen-containing functional groups

能源、资源与环境技术 | Updated：2026-01-06

- Adsorption of cadmium ions from aqueous solutions by activated carbon with oxygen-containing functional groups
- Chinese Journal of Chemical Engineering Vol. 23, Issue 10, Pages: 1705-1711(2015)
- Affiliations：
  
  2 College of Environmental Science and Engineering, Beijing Forestry University,Beijing,China,100083
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.08.031
  CLC：
- Published：2015
- Accepted：
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Yu Bian, Zhaoyong Bian, Junxiao Zhang, Aizhong Ding, Shaolei Liu, Lei Zheng, Hui Wang. Adsorption of cadmium ions from aqueous solutions by activated carbon with oxygen-containing functional groups[J]. Chin.J.Chem.Eng., 2015, 23(10): 1705-1711.
DOI：

Yu Bian, Zhaoyong Bian, Junxiao Zhang, Aizhong Ding, Shaolei Liu, Lei Zheng, Hui Wang. Adsorption of cadmium ions from aqueous solutions by activated carbon with oxygen-containing functional groups[J]. Chin.J.Chem.Eng., 2015, 23(10): 1705-1711. DOI： 10.1016/j.cjche.2015.08.031.

摘要

Abstract

The adsorption of aqueous cadmium ions (Cd(II)) have been investigated for modified activated carbon (AC-T) with oxygen-containing functional groups. The oxygen-containing groups of AC-T play an important role in Cd(II) ion adsorption onto AC-T. The modified activated carbon is characterized by scanning electron microscopy

Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The results of batch experiments indicate that the maximal adsorption could be achieved over the broad pH range of 4.5 to 6.5. Adsorption isotherms and kinetic study suggest that the sorption of Cd(II) onto AC-T produces monolayer coverage and that adsorption is controlled by chemical adsorption. And the adsorbent has a good reusability. According to the FT-IR and XPS analyses

electrostatic attraction and cation exchange between Cd(II) and oxygen-containing functional groups on AC-T are dominant mechanisms for Cd(II) adsorption.

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