Electrolysis process for removal of caustic in hemicellulose cau

Details Electrolysis process for removal of caustic in hemicellulose cau Electrolysis process for removal of caustic in hemicellulose cau

1996-07-12

1997-09-16

Gorgos, Kathryn L.

Electrolysis: processes, compositions used therein, and methods

Electrolytic material treatment

Organic

205693, 205510, 205511, 205513, C25F 100, C25B 116

Patent

active

056676689

ABSTRACT:
Pulping chemicals and hemicellulose are recovered from a starting solution essentially free of lignin but containing a mixture of hemicellulose and caustic by electrolyzing this solution in the anolyte compartment of an electrolytic cell. By electrolysis, the concentration of caustic in the anolyte is decreased and the concentration of caustic in a catholyte of said cell is increased so as to allow recovery of about 60 to about 80 percent of the caustic present in the hemicellulose caustic starting solution.

REFERENCES:
patent: 3806403 (1974-04-01), Ferguson
patent: 5034094 (1991-07-01), Kurple
patent: 5061343 (1991-10-01), Azarniouch et al.
patent: 5370771 (1994-12-01), Nilsson
patent: 5374333 (1994-12-01), Nykanen et al.

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