Membrane technology for the continuous separation microalgae/culture medium: compared performances of cross-flow microfiltration and ultrafiltration

Cross-flow microfiltration and ultrafiltration techniques have become a suitable process for the separation of micro-organisms in a variety of biotechnical applications. In this paper, eight commercial membranes (IRIS, Orelis, Miribel, France) were evaluated for the harvesting of two marine microalg...

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Bibliographic Details
Published in:Aquacultural engineering 1999-08, Vol.20 (3), p.191-208
Main Authors: Rossignol, N., Vandanjon, L., Jaouen, P., Quéméneur, F.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
algae culture
algal culture
Biological and medical sciences
bioreactors
bioseparation
Brackish
Chlorophycota
culture media
evaluation
Freshwater
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
Harvesting
haslea osteraria
Haslea ostrearia
Marine
Membrane fouling
membranes
Microalgae
Microfiltration
phytoplankton
Plant aquaculture, algal production (macroalgae)
pressure
Skeletonema costatum
suspensions
Ultrafiltration
velocity
water flow
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Summary:Cross-flow microfiltration and ultrafiltration techniques have become a suitable process for the separation of micro-organisms in a variety of biotechnical applications. In this paper, eight commercial membranes (IRIS, Orelis, Miribel, France) were evaluated for the harvesting of two marine microalgae: Haslea ostrearia and Skeletonema costatum, both widely cultivated in western France (Région des Pays de Loire). The effects of cross-flow velocity, transmembrane pressure, concentration and the characteristics of suspensions are discussed. The ultrafiltration membrane (polyacrylonitrile, 40 kDa) proves to be the most efficient in the peculiar conditions of low pressure and low tangential velocity for a long-term operation.
ISSN:0144-8609
1873-5614
DOI:10.1016/S0144-8609(99)00018-7