Biotechnology Letters

, Volume 23, Issue 4, pp 249–251

Batch studies on the removal of gold(III) from aqueous solution by Azolla filiculoides

  • A.P.M. Antunes
  • G.M. Watkins
  • J.R. Duncan
Article

DOI: 10.1023/A:1005633608727

Cite this article as:
Antunes, A., Watkins, G. & Duncan, J. Biotechnology Letters (2001) 23: 249. doi:10.1023/A:1005633608727

Abstract

Azolla filiculoides removed 86% and 100% of gold(III) from initial metal solutions of 2–10 mg gold l−1 increasing with increased initial concentrations of gold(III). The biomass gave greater than 95% removal efficiency from solution at all biomass concentrations measured. Complete removal of gold occurred at pH 2, with 42% removal at pH 3 and 4, and 63% and 73% removal at pH 5 and 6, respectively. No temperature-dependence removal was observed.

Azolla filiculoidesbatch optimization studiesbiosorptiongold(III)

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • A.P.M. Antunes
    • 1
  • G.M. Watkins
    • 2
  • J.R. Duncan
    • 1
  1. 1.Department of Biochemistry and MicrobiologyRhodes UniversityGrahamstownSouth Africa
  2. 2.Department of ChemistryRhodes UniversityGrahamstownSouth Africa