Affiliation:
1. Biochemical Engineering Research Unit, Department of Chemical Engineering, McGill University, Montreal, Québec, Canada H3A 2A7
Abstract
Rhizopus arrhizus
biomass was found to absorb a variety of different metal cations and anions but did not absorb alkali metal ions. The amount of uptake of the cations was directly related to ionic radii of La
3+
, Mn
2+
, Cu
2+
, Zn
2+
, Cd
2+
, Ba
2+
, Hg
2+
, Pb
2+
, UO
2
2+
, and Ag
+
. The uptake of all the cations is consistent with absorption of the metals by sites in the biomass containing phosphate, carboxylate, and other functional groups. The uptake of the molybdate and vanadate anions was strongly pH dependent, and it is proposed that the uptake mechanism involves electrostatic attraction to positively charged functional groups.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Cited by
447 articles.
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