C - Chemistry – Metallurgy – 12 – S
Patent
C - Chemistry, Metallurgy
12
S
195/60
C12S 3/04 (2006.01) D21C 3/00 (2006.01)
Patent
CA 1336079
The invention relates to a process and an apparatus capable of removing and/or transforming lignin or its degradation products present in material containing lignocellulose. In the present process, a redox potential is set between 200 and 500 mV by the addition of oxidizing agents and/or reducing agents and/or salts and/or phenolic compounds to an acid aqueous solution which contains lignitic raw materials. The lignin degrading reaction and its attendant simultaneous bleaching effect is initiated by the addition of enzymes, microorganisms, animal or plant cells. Continuous stirring allows the reaction to be maintained for several hours at a value that fluctuates about a constant redox potential value, and a constant temperature.
570948
Call Hans-Peter
Kirby Eades Gale Baker
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