Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Including recovery of organic by-product
Patent
1985-04-22
1986-04-22
Bashore, S. Leon
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Including recovery of organic by-product
162 3011, 562513, 210638, 210639, 210650, 210652, 210724, 210769, 2041821, 2041824, D21C 2104
Patent
active
045840571
ABSTRACT:
An aliphatic organic acid fraction is separated from the kraft black liquor by subjecting the liquor to ultrafiltration, treating the resulting permeate by electrodialysis, acidifying the resultant deionate to about pH 4-5, separating the lignin solids which precipitate following this acidification, raising the pH of the separated solution to about 7-8 and finally subjecting the neutralized solution to electrodialytic water-splitting.
REFERENCES:
patent: 1271591 (1918-07-01), Loomis
patent: 1723800 (1929-08-01), Michael et al.
patent: 1859888 (1932-05-01), Richter
patent: 2701255 (1955-02-01), Heratige et al.
patent: 2926114 (1960-02-01), Gardgaard et al.
patent: 2976273 (1961-03-01), Ball et al.
patent: 3136710 (1964-06-01), Dubey
patent: 3704218 (1972-11-01), Kato et al.
patent: 4470876 (1984-09-01), Beaupre et al.
patent: 4482459 (1984-11-01), Shiver
Collins, et al., "Spent Sulfite Liquor Reducing Sugar Purification by Ultrafiltration with Dynamic Membranes", TAPPI, Jun. 1973, vol. 56, No. 6.
Gregor Harry P.
Rowe John W.
Anderson Andrew J.
Bashore S. Leon
McConnell David G.
Silverstein M. Howard
The United States of America as represented by the Secretary of
LandOfFree
Membrane processes for separation of organic acids from kraft bl does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Membrane processes for separation of organic acids from kraft bl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Membrane processes for separation of organic acids from kraft bl will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1913858