Removal of Cu2+ and Pb2+ in aqueous solutions by fly ash

Erol M. M. , Kucukbayrak S., Ersoy-Mericboyu A., Ulubas T.

Energy Conversion and Management, vol.46, no.7-8, pp.1319-1331, 2005 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 46 Issue: 7-8
  • Publication Date: 2005
  • Doi Number: 10.1016/j.enconman.2004.06.033
  • Journal Name: Energy Conversion and Management
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.1319-1331
  • Keywords: fly ash, heavy metal, waste water treatment

Abstract

In this study, the removal of Cu2+ and Pb2+ ions by precipitation from aqueous solutions by using six fly ashes with different compositions was achieved. The effect of four parameters on the removal of Cu2+ and Pb2+, which are contact time, fly ash composition, pH of the solution and fly ash concentration, were investigated. The fly ash concentrations required to achieve maximum Cu2+ and Pb2+ removal were found to vary between 0.2-10 and 0.075-3.5 g/l, respectively. It was also observed that both the Cu2+ and Pb 2+ removal capacities of the fly ashes depend strongly on their CaO content. © 2004 Elsevier Ltd. All rights reserved.