Application of cellulase to control industrial slime

Details Application of cellulase to control industrial slime Application of cellulase to control industrial slime

1989-03-13

1990-06-26

Wyse, Tom

Liquid purification or separation

Processes

Treating by enzyme

210764, 162161, 424 942, C02F 150

Patent

active

049369946

ABSTRACT:
A method of attacking and removing microbial slime in slime covered surfaces and maintaining a slime-free surface as in exposed cooling tower surfaces and in waste water treatment and paper making. This method comprises utilizing an enzyme blend in 2 to 100 parts per million (ppm) of cellulase, alpha-amylase and protease. Such enzyme blends have been found specifically to digest microbial slime and reduce microbial attachment and biofilm. A specific combination of polysaccharide degrading enzymes is a ratio of 2 parts cellulase to 1 alpha-amylase to 1 protease utilized in 2-100 parts per million. Broadly, the alpha-amylase must be at least 1 and the protease may vary from 0.5 to 1 part.

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patent: 4055467 (1979-10-01), Christensen et al.
patent: 4288545 (1981-09-01), Spraker
patent: 4370199 (1983-01-01), Orndorff
patent: 4684469 (1987-08-01), Pedersen et al.

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