Wastewater treatment by bio-magnetic separation: a comparison of iron oxide and iron sulphide biomass recovery
Wastewater treatment by bio-magnetic separation: a comparison of iron oxide and iron sulphide biomass recovery
Many microorganisms have an affinity to accumulate metal ions onto their surfaces, which results in metal loading of the biomass. Microbial biomineralisation of iron produces a biomass, which is often highly magnetic and can be separated from water systems by the application of a magnetic field. This paper reports on the magnetic separation of biomass containing microbial iron oxide (Fe3O4, present within magnetotactic bacteria) and iron sulphide (Fe1-XS, precipitated extracellularly by sulphate reducing bacteria) in a single wire cell. Since such bacteria can be separated magnetically, their affinity to heavy metal or organic material accumulation renders them useful for the removal of pollutants from wastewater. The relative merits of each bacterium to magnetic separation techniques in terms of applied magnetic field and processing conditions are discussed.
311-317
Bahaj, A.S.
a64074cc-2b6e-43df-adac-a8437e7f1b37
James, P.A.B.
da0be14a-aa63-46a7-8646-a37f9a02a71b
Moeschler, F.D.
77c0ee18-3a8e-4512-bb28-acecf94c8720
1998
Bahaj, A.S.
a64074cc-2b6e-43df-adac-a8437e7f1b37
James, P.A.B.
da0be14a-aa63-46a7-8646-a37f9a02a71b
Moeschler, F.D.
77c0ee18-3a8e-4512-bb28-acecf94c8720
Bahaj, A.S., James, P.A.B. and Moeschler, F.D.
(1998)
Wastewater treatment by bio-magnetic separation: a comparison of iron oxide and iron sulphide biomass recovery.
Water Science & Technology, 38 (6), .
Abstract
Many microorganisms have an affinity to accumulate metal ions onto their surfaces, which results in metal loading of the biomass. Microbial biomineralisation of iron produces a biomass, which is often highly magnetic and can be separated from water systems by the application of a magnetic field. This paper reports on the magnetic separation of biomass containing microbial iron oxide (Fe3O4, present within magnetotactic bacteria) and iron sulphide (Fe1-XS, precipitated extracellularly by sulphate reducing bacteria) in a single wire cell. Since such bacteria can be separated magnetically, their affinity to heavy metal or organic material accumulation renders them useful for the removal of pollutants from wastewater. The relative merits of each bacterium to magnetic separation techniques in terms of applied magnetic field and processing conditions are discussed.
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Published date: 1998
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Local EPrints ID: 74973
URI: http://eprints.soton.ac.uk/id/eprint/74973
ISSN: 0273-1223
PURE UUID: ad9c7360-5c21-4f6b-8611-2673576b993c
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Date deposited: 11 Mar 2010
Last modified: 08 Jan 2022 02:39
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Author:
F.D. Moeschler
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