Zinc and copper adsorption from an aqueous solution onto activated carbon


Kuecuekguel E. Y., Kudu S.

FRESENIUS ENVIRONMENTAL BULLETIN, vol.15, no.6, pp.512-517, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 6
  • Publication Date: 2006
  • Journal Name: FRESENIUS ENVIRONMENTAL BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.512-517
  • Keywords: adsorption, activated carbon, zinc, copper, heavy metal removal, HEAVY-METALS, SOLID-WASTES, REMOVAL, CADMIUM, SORPTION, CU(II), PEAT
  • Dokuz Eylül University Affiliated: No

Abstract

Batch studies were carried out to evaluate the potential of Type 1 and Type 2 activated carbons for the adsorption of zinc and copper from aqueous solutions. The effects of particle size, pH, initial concentrations, and contact time on adsorption of zinc and copper, and the adsorption capacities of adsorbents were investigated. The adsorption in both systems is highly dependent on particle size, pH, initial adsorbate concentration, and contact time. The finest particle size (0.25-0.50 mm) showed the best Zn(II)((aq)) and Cu(II)((aq)) removal efficiencies, at pHs 7.03 and 4.49, for both activated carbons. The Langmuir isotherm successfully represented the adsorption phenomenon at these specific conditions. Langmuir constants Q(0) (mg/g) belonging to Type1 AC and Type2 AC, respectively, are 6.035 and 3.821 mg/g for Zn(II)((aq)) removal, but 6.930 and 0.267 mg/g for Cu(II)((aq)) removal.