ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

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Precipitation of organic substances from sulfite waste liquors

J. Slávik and R. Boríšek

Research Institute Cellulose Industry, Bratislava

 

Abstract: Org. substances in sulfite waste liquors are coagulated by heating with H2SO4 (14.6 g. per l.; 1 hr. at 150°). HCl, HNO3, and H2C2O4 are less effective, and H3PO4, H3BO3, H2SiF6, HCO2H, AcOH, and tartaric acid are without effect. Coagulation is accelerated by Al3+, Cr3+, and Sn2+, and retarded by SO32-. Concn. of the liquors facilitates coagulation.

Full paper in Portable Document Format: 15a149.pdf (in Slovak)

 

Chemical Papers 1 (5) 149–159 (1947)

Tuesday, October 08, 2024

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