International Journal for Research in Applied Sciences and Biotechnology(IJRASB)

  • Year: 2020
  • Volume: 7
  • Issue: 1

Examination of adsorption abilities of natural and acid activated bentonite for heavy metals removal from aqueous solutions

  • Author:
  • Nedim Hodzic1, Abdel Dozic2,, Indira Šestan3, Hana Alihodzic4
  • Total Page Count: 6
  • Page Number: 1 to 6

1PhD. Candidate, Department of Environmental Engineering, Faculty of Technology, University of Tuzla, Bosnia and Herzegovina

2Assoc. Prof. Dr., Department of Environmental Engineering, Faculty of Technology, University of Tuzla, Bosnia and Herzegovina

3Asst. Prof. Dr., Department of Physical chemistry and Electrochemistry, Faculty of Technology, University of Tuzla, Bosnia and Herzegovina

4Sen. Asst., Department of Environmental research laboratory, Institute for quality standardization and ecology, Bosnia and Herzegovina

*Corresponding Author: abdel.dozic@untz.ba

Online published on 18 April, 2020.

Abstract

The effect of the initial concentration of Cr, Co, Cu, Ni, and Pb metal ions from multicomponent solutions on the sorption capacity of natural and acid activated bentonite was examined in this paper. The acid activation was performed by using hydrochloric and sulfuric acid at different concentrations. The results of adsorption research have shown that bentonite can be effectively used as an adsorbent for the removal of metal ions from multicomponent solutions. Acid activation of bentonite changes the structure and content of individual oxides, increases the porosity and the number of available spots for the adsorption process. For this reason, the bentonite removal efficiency increased after acid activation for all heavy metals tested. With increased acid concentration, the degree of bentonite adsorption increased, and sulfuric acid rather than chloric acid showed better results in removal efficiency.

Keywords

Adsorption, Bentonite, Heavy Metals, Acid Activation