Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1996-08-30
1999-08-31
Fortuna, Ana
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
21050023, 210615, 435 31, 435 711, B01D 6100
Patent
active
059450029
ABSTRACT:
A method of producing a secondary metabolites comprises providing a porous substratum which has a biofilm of micro-organism attached thereto, and causing a nutrient solution to flow through the substratum, at a rate which is sufficiently low for a nutrient gradient to be established across the biofilm, such that the nutrient concentration at a high level along the gradient is sufficiently high to support primary growth of the micro-organism, and the nutrient concentration at low level along the gradient being sufficiently low to induce secondary growth of the micro-organism, thereby to produce secondary metabolite. The substrate is in the form of a hollow fibre membrane having a relatively thin, porous skin on the inside, and a relatively thick, finger-like, externally unskinned void structure radiating outwardly from the skin.
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Burton Stephanie Gail
Jacobs Edmund Petrus
Leukes Winston Daniel
Rose Peter Dale
Sanderson Ronald Douglas
Fortuna Ana
Water Research Committe
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