An Efficient and Low-Cost Indigenous Material for Removal of Hexavalent Chromium from Industrial Effluents

Detoxification of Hexavalent Chromium from Effluents

  • Muhammad Kashif Channa Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro-76080, Pakistan
  • Jameel Ahmed Baig Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro-76080, Pakistan
  • Tasneem Gul Kazi Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro-76080, Pakistan
  • Hassan Imran Afridi Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro-76080, Pakistan
  • Suraya Samaijo Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro-76080, Pakistan
  • Ghulam Mustafa Channa Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro-76080, Pakistan
  • Latif Elci Chemistry Department, Pamukkale University, 20017 Denizli, Turkey
Keywords: orange peel biosorbent, hexavalent chromium, industrial effluents, kinetics and thermodynamics study

Abstract

An indigenous biosorbent originated from orange peel was scrutinized the remediation of hexavalent chromium (Cr+6) from industrial effluents. The analytical influences of different biosorption parameters such as biosorbent dosage, contact time, Cr+6 concentration, pH and temperature were also studied. The physical modeling study revealed that the biosorption of Cr+6 on orange peel biosorbent (OPB) followed the rate of kinetic pseudo second order with a multilayer biosorption. Meanwhile, the estimated mean sorption energy (E) indicated the chemisorption surface mechanism for the biosorption of Cr+6 on the surface of OPB. The thermodynamic changes of Gibbs free energy, enthalpy and entropy showed a spontaneous and exothermic biosorption of Cr+6 onto the OPB. The studied material of OPB showed an efficient removal of Cr+6 from collected industrial effluents with % biosorption Cr+6 up to 94%. The  experimental adsorption capacity of Cr+6 on OPB is 0.222 mmol/g with negligible interference. The  proposed OPB is found to be an economical biosorbent for the efficient removal of Cr+6 ions and successfully applied on different industrial effluents with biosorption > 94%.

 

 

Published
2022-10-19
Issue
Vol 65 No 3 (2022): Pakistan Journal of Scientific and Industrial Research Series A: Physical Sciences
Section
Articles