Biosorption of heavy metals to immobilised Phormidium laminosum biomass

The capacity to biosorb Cu(II), Fe(II), Ni(II) and Zn(II) by non-viable biomass of the cyanobacterium Phormidium laminosum entrapped in polysulfone and epoxy resin beads was investigated. The biosorption process depended on the wetting of biomass beads, the rate of metal biosorption decreasing when...

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Bibliographic Details
Published in:Journal of biotechnology 1999-04, Vol.69 (2), p.227-240
Main Authors: Blanco, Alicia, Sanz, Begoña, Llama, Marı́a J, Serra, Juan L
Format: Article
Language:English
Subjects:
Bacteria
Biodegradation of pollutants
Biological and medical sciences
Biomass
biosorption
Biotechnology
Copper
Cyanobacteria
Desorption
Environment and pollution
Epoxy resin
Epoxy resins
Fundamental and applied biological sciences. Psychology
Hydrochloric acid
Immobilisation
Industrial applications and implications. Economical aspects
Iron
Marine
Metal biosorption
Metal desorption
Nickel
Non-viable biomass
Phormidium laminosum
Polysulfone
Polysulfones
Zinc
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Summary:The capacity to biosorb Cu(II), Fe(II), Ni(II) and Zn(II) by non-viable biomass of the cyanobacterium Phormidium laminosum entrapped in polysulfone and epoxy resin beads was investigated. The biosorption process depended on the wetting of biomass beads, the rate of metal biosorption decreasing when dry biomass beads were used. A decrease in the immobilised biomass bead size led to an increase in the rate of metal biosorption. The amount of metal biosorbed increased with the biomass and the amount of metal available. The biosorbed metal was completely desorbed from the biomass beads by washing with 0.1 M HCl. Polysulfone biomass beads can be reused for, at least, ten consecutive biosorption/desorption cycles without apparent loss of efficiency after its reconditioning with 0.1 M NaOH.
ISSN:0168-1656
1873-4863
DOI:10.1016/S0168-1656(99)00046-2