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Membrane processes for separation of organic acids from kraft black liquors
Membrane processes for separation of organic acids from kraft black liquors
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机译:从牛皮纸黑液中分离有机酸的膜工艺
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摘要
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.
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