Biological process to remove color from paper mill wastewater

Details Biological process to remove color from paper mill wastewater Biological process to remove color from paper mill wastewater

1993-06-22

1995-04-18

Wyse, Thomas

Liquid purification or separation

Processes

Treatment by living organism

210611, 210928, 435278, C02F 334

Patent

active

054075777

ABSTRACT:
A process for removing color from a pulp and paper wastewater which comprises the following steps: (A) treating the wastewater with an enzyme which is capable of oxidizing at least a portion of the color forming components of the wastewater; and (B) treating the wastewater subsequent to the enzyme treatment of step (A) with a tannin-degrading microorganism capable of degrading at least a portion of the oxidized color forming components.

REFERENCES:
patent: 4199444 (1980-04-01), Blair et al.
patent: 4266035 (1981-05-01), Blair et al.
patent: 5091089 (1992-02-01), Shen et al.
patent: 5178762 (1993-01-01), Pokora et al.
patent: 5225940 (1993-07-01), Nghiem
Davis and Burns, "Decolorization of Phenolic Effluents by Soluble and Immobilized Phenol Oxidase", App. Microbio. & Biotec., Spring 1990, 721-26.
Ferrer et al., Decolorization of Kraft Effluent by Free & Immobilized Lignin Peroxidases and Horseradish Peroxidase, Biotech. Letters, vol. 13, No. 3, 577-82 (1991).
Nalco Prduct Bulletin, INOC.TM. 8161, "Bioaugmentation Cultures", 1990 Nalco Chemical Company, Naperville, IL. U.S.A.

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