THE SIMULTANEOUS BIOSORPTION OF CR(VI), FE(III) AND CU(II) ON RHIZOPUS-ARRHIZUS

Authors
Citation
Y. Sag et T. Kutsal, THE SIMULTANEOUS BIOSORPTION OF CR(VI), FE(III) AND CU(II) ON RHIZOPUS-ARRHIZUS, Process biochemistry, 33(5), 1998, pp. 571-579
Citations number
20
Categorie Soggetti
Engineering, Chemical",Biology,"Biothechnology & Applied Migrobiology
Journal title
ISSN journal
13595113
Volume
33
Issue
5
Year of publication
1998
Pages
571 - 579
Database
ISI
SICI code
1359-5113(1998)33:5<571:TSBOCF>2.0.ZU;2-7
Abstract
The simultaneous biosorption of three metal ions - chromium(VI), iron( III) and copper(II) - has been studied using R. arrhizus. The ability of the fungal biomass to bind three metals simultaneously is shown as a function of levels of metal concentration and ratios of metals. Sinc e the initial biosorption rates, equilibrium and ultimate metal remova l decreased with increasing concentrations of the other metal ions, th e combined action of Cr(VI), Fe(III) and Cu(II) ions on R. arrhizus wa s generally found to be antagonistic. Although Cr(VI) ions were adsorb ed selectively from the ternary metal mixtures, Fe(III) ions competed strongly with Cr(VI) ions to bind to active sites on the fungus. (C) 1 998 Elsevier Science Ltd. All rights reserved.