Adsorptive potential of Acacia nilotica based adsorbent for chromium(VI) from an aqueous phase

Raza Khalid; Zaheer Aslam; Aamir Abbas; Waqar Ahmad; Naveed Ramzan; Reyad Shawabkeh

doi:10.1016/j.cjche.2017.08.017

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Adsorptive potential of Acacia nilotica based adsorbent for chromium(VI) from an aqueous phase

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

- Adsorptive potential of Acacia nilotica based adsorbent for chromium(VI) from an aqueous phase
- Chinese Journal of Chemical Engineering Vol. 26, Issue 3, Pages: 614-622(2018)
- Affiliations：
  
  2 Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.08.017
  CLC：
- Published：2018
- Accepted：
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based adsorbent for chromium(VI) from an aqueous phase[J]. Chinese Journal of Chemical Engineering, 2018, 26(3): 614-622.
DOI：

based adsorbent for chromium(VI) from an aqueous phase[J]. Chinese Journal of Chemical Engineering, 2018, 26(3): 614-622. DOI： 10.1016/j.cjche.2017.08.017.

摘要

Abstract

The objective of this research was to enhance adsorption capacity of Acacia nilotica (keekar) sawdust for the abatement of chromium bearing wastewater and to investigate the effect of process parameters on adsorption capacity. The sawdust was activated by acid wash and functionalized subsequently with formaldehyde. Functionalization of activated sawdust raised its chromium removal efficiency of almost 10% as compared to its adsorption removal efficiency of HCl treated sawdust in a batch adsorption study. Adsorption kinetic data provided better fitting with pseudo second order model. Maximum adsorption capacity calculated through the best fitting Langmuir model was 6.34 mg·g

-1

and 8.2 mg·g

-1

for HCl treated and formaldehyde functionalized sawdust adsorbents

respectively. The adsorption of Cr(VI) was endothermic when studied by varying temperature from 20℃ to 50℃ for both activated and functionalized adsorbents.

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