Immobilization of microorganisms on a support made of synthetic

Details Immobilization of microorganisms on a support made of synthetic Immobilization of microorganisms on a support made of synthetic

1994-06-06

1997-01-21

Naff, David M.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing oxygen-containing organic compound

210615, 210616, 435147, 435155, 435160, 435161, 435175, 435177, 435178, 435179, 435180, C12P 740, C02F 300, C12N 1112, C12N 1108

Patent

active

055958931

ABSTRACT:
A solid support for immobilization of microorganism cells is made of a synthetic polymer such as a polyolefin, in admixture with an organic polymeric plant material such as corn fibers, oat hulls, starch, and cellulose. Preferably, the synthetic polymer is in an amount of about 50-95% wt-% and the plant material is in an amount of about 5-50 wt-%. Preferred polyolefins are polyethylene and polypropylene. The plant material may be a mixture including a plant material that functions as a nutrient to enhance growth of the microorganism on the support. The support may be produced by combining the synthetic polymer and plant material to form a composite, dough-like thermoplastic composition. The composition may be prepared in an extrusion mixer and co-extruded as an extrudate to form a shaped article. The supports are useful for immobilizing living cells of a microorganism to form a biofilm reactor for use in continuous fermentations, in streams for bioremediation of contaminants, and in waste treatment systems to remove contaminants and reduce biochemical oxygen demand levels.

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