Removal of diclofenac from aqueous solution with multi-walled carbon nanotubes modified by nitric acid

Xiang Hu; Zhao Cheng

doi:10.1016/j.cjche.2015.06.010

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Removal of diclofenac from aqueous solution with multi-walled carbon nanotubes modified by nitric acid

能源、资源与环境技术 | Updated：2026-01-06

- Removal of diclofenac from aqueous solution with multi-walled carbon nanotubes modified by nitric acid
- Chinese Journal of Chemical Engineering Vol. 23, Issue 9, Pages: 1551-1556(2015)
- Affiliations：
  
  College of Chemical Engineering, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.06.010
  CLC：
- Published：2015
- Accepted：
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Xiang Hu, Zhao Cheng. Removal of diclofenac from aqueous solution with multi-walled carbon nanotubes modified by nitric acid[J]. , 2015, 23(9): 1551-1556.
DOI：

Xiang Hu, Zhao Cheng. Removal of diclofenac from aqueous solution with multi-walled carbon nanotubes modified by nitric acid[J]. , 2015, 23(9): 1551-1556. DOI： 10.1016/j.cjche.2015.06.010.

摘要

Abstract

Modified multi-walled carbon nanotubes (MWCNTs) were used as adsorbents for removal of diclofenac. The reaction conditions were examined. Langmuir

Freundlich

Temkin

and Dubinin-Radushkevich isotherm models were applied to determine appropriate equilibrium expression. The results show that the experimental data fit the Freundlich equation well. Thermodynamic parameters show that the adsorption process is spontaneous and exothermic. The kinetic study indicates that the adsorption of diclofenac can be well described with the pseudo-second-order kinetic model and the process is controlled by multiple steps.

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