Removal of lead from solution by the non-viable biomass of the water fern Azolla filiculoides

Non-viable biomass of the aquatic fern, Azolla filiculoides, removed up to 93 mg lead/g biomass from solution. Lead removal varied from 30% of the initial lead concentration at pH 1.5 to approximately 95% at pH values of 3.5 and 4.5. Lead removal decreased to 30% of the initial lead concentration if...

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Bibliographic Details
Published in:Biotechnology letters 1998-08, Vol.20 (8), p.745-747
Main Authors: Sanyahumbi, D, Duncan, J.R, Zhao, M, Van Hille, R
Format: Article
Language:English
Subjects:
Azolla filiculoides
Biological and medical sciences
Biological treatment of waters
Biomass
bioremediation
Biotechnology
Environment and pollution
Ferns
Freshwater
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
pollutants
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Summary:Non-viable biomass of the aquatic fern, Azolla filiculoides, removed up to 93 mg lead/g biomass from solution. Lead removal varied from 30% of the initial lead concentration at pH 1.5 to approximately 95% at pH values of 3.5 and 4.5. Lead removal decreased to 30% of the initial lead concentration if the lead concentration was initially over 400 mg/l. Lead removal remained at approximately 90% between 10 degrees C and 50 degrees C. Biomass concentration (4-8 mg/l) had little effect on lead removal.
ISSN:0141-5492
1573-6776
DOI:10.1023/A:1005386703592