Biosorption of copper(II) from aqueous solutions by wheat shell


BAŞÇI N., KOCADAĞİSTAN E., KOCADAĞİSTAN B.

DESALINATION, vol.164, no.2, pp.135-140, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 164 Issue: 2
  • Publication Date: 2004
  • Doi Number: 10.1016/s0011-9164(04)00172-9
  • Journal Name: DESALINATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.135-140
  • Keywords: biosorption, copper (II), wheat shell, heavy metal, MARINE-ALGAE, PRETREATED BIOMASS, CADMIUM, REMOVAL
  • Ataturk University Affiliated: Yes

Abstract

The adsorption capacity of wheat shell for copper (11) was studied at various pH (2-7), agitation speeds (50250 rpm) and initial metal ion concentrations (Co, from 10 to 250 mg.L-1). Maximum biosorption of copper onto wheat shell occurred at 240 rpm agitation speed and at pH between 5 and 6. The biosorption values of copper (11) were increased with increasing pH from 2 to 5 and decreased with increasing copper/wheat shell (x/m) ratios from 0.83 to 10.84 mgCu(II).g(-1) wheat shell. The biosorption efficiencies at these x/m ratios were 99% and 52%, respectively, at the end of the 120 min contact time (t). The equilibrium isotherms and kinetics were obtained from batch adsorption experiments at 298 K. It was observed that wheat shell was a suitable biosorbent for removing Cu(II) from aqueous solutions.