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Biosorption of lead, cadmium and mercury by immobilized Microcystis aeruginosa in a column

Paper ID Volume ID Publish Year Pages File Format Full-Text
36574 45137 2005 5 PDF Available
Title
Biosorption of lead, cadmium and mercury by immobilized Microcystis aeruginosa in a column
Abstract

Immobilized Microcystis aeruginosa in a flow-through sorption column was evaluated for the potential to remove Pb2+, Cd2+ and Hg2+ from aqueous solutions. M. aeruginosa showed high affinity for the three heavy metals with removal efficiency of 90% for Cd2+ and Hg2+, and 80% for Pb2+ at saturation conditions. Competitive sorption experiments conducted in paired and ternary systems indicated that Pb2+ was sequestered preferentially over Cd2+ and Hg2+. The presence of Cd2+ interfered only slightly with the uptake of Hg2+, as Pb2+ and Hg2+ did with Cd2+. In contrast, Hg2+ sorption was affected by Pb2+ to a great extent. Desorption with 1 M HCl was completed within 25 min with high efficiency and effectiveness for the three metals. The results of this study indicate that M. aeruginosa is to be a potential biosorbent material except when Hg2+ and Pb2+ are in the same contaminated solution.

Keywords
Biosorption; Microcystis aeruginosa; Lead; Cadmium; Mercury; Competitive sorption
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Biosorption of lead, cadmium and mercury by immobilized Microcystis aeruginosa in a column
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 12, December 2005, Pages 3675–3679
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
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Any Questions? feel free to contact us