Investigation of Cu (II) removal from synthetic solution by ion exchange using south african clinoptilolite

John Kabuba, Edison Muzenda, Freeman Ntuli, Antoine Mulaba-Bafubiandi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The objective of this study was to investigate the effect of NaCl, KCl and acid (HCl), on South Africa clinoptilolite used as an adsorbent in the ion-exchange process for the removal of cations (Cu II) from wastewater. The kinetic parameters such as ΔH, ΔS and ΔG affecting the adsorption of Cu (II) ions were studied. The adsorption of Cu (II) from synthetic waste water was found to be dependent on pH, temperature, contact time and initial adsorbate concentration. The pH was varied from 2.5-6 and the optimum pH for Cu (II) removal was found to be 4.0. The removal of Cu (II) ions increased with time and attained saturation in about 60-70 min. The equilibrium data showed that the adsorption was endothermic in nature. Kinetics data showed that at higher temperatures, the rate of adsorption is higher for the clinoptilolite in natural zeolite and that Langmuir equation successfully described the adsorption process.

Original languageEnglish
Title of host publicationIAENG Transactions on Engineering Technologies - Special Edition of the World Congress on Engineering and Computer Science 2011
Number of pages13
Publication statusPublished - 2013
EventWorld Congress on Engineering and Computer Science, WCES 2011 - San Francisco, CA, United States
Duration: 19 Oct 201121 Oct 2011

Publication series

NameLecture Notes in Electrical Engineering
Volume170 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119


ConferenceWorld Congress on Engineering and Computer Science, WCES 2011
Country/TerritoryUnited States
CitySan Francisco, CA


  • Adsorption
  • Clinoptilolite
  • Copper removal
  • Ion exchange
  • Kinetics
  • Langmuir equation
  • Saturation

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering


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