초록

The present invention relates to a method of removing organic acid an/or organic amines odors from aqueous systems by treating the aqueous system or the atmosphere adjacent to the aqueous system with a solution of a substantially sulfonate free, anionic kraft pine lignin.

대표청구항 ▼

1. A method of deodorizing a odoriferous aqueous system containing odor causing organic acids and/or amine comprising adding to said system a substantially sulfonate free, anionic kraft pine lignin in an amount sufficient to deodorize said aqueous system. 2. The method of claim 1 wherein said substa

1. A method of deodorizing a odoriferous aqueous system containing odor causing organic acids and/or amine comprising adding to said system a substantially sulfonate free, anionic kraft pine lignin in an amount sufficient to deodorize said aqueous system. 2. The method of claim 1 wherein said substantially sulfonate free, anionic kraft pine lignin is added to said aqueous system as an aqueous solution.3. The method of claim 2 wherein said aqueous solution has a substantially sulfonate free, anionic kraft pine lignin concentration of from about 0.1% to about 30%.4. The method of claim 3 wherein said substantially sulfonate free, anionic kraft pine lignin aqueous solution is added to said aqueous system in a concentration from about 10 ppm to about 500 ppm.5. The method of claim 2 wherein said substantially sulfonate free, anionic kraft pine lignin aqueous solution has a pH from about pH 8 to about pH 11.6. The method of claim 1 wherein said substantially sulfonate free, anionic kraft pine lignin is a sodium salt of substantially sulfonate free, anionic kraft pine lignin.7. The method of claim 1 wherein said substantially sulfonate free, anionic kraft pine lignin has a molecular weight of from about 25,000 to 75,000.8. A method of deodorizing the odoriferous atmosphere of an aqueous system comprising spraying into said atmosphere an aqueous solution of a substantially sulfonate free, anionic kraft pine lignin. 9. The method of claim 8 wherein said aqueous solution has a substantially sulfonate free, anionic kraft pine lignin concentration of from about 0.1% to about 10%.10. The method of claim 8 wherein said substantially sulfonate free, anionic kraft pine lignin solution has a pH of from about pH 8 to about pH 11.11. The method of claim 8 wherein said substantially sulfonate free, anionic kraft pine lignin is a sodium salt of substantially sulfonate free, anionic kraft pine lignin.12. The method of claim 8 wherein said substantially sulfonate free, anionic kraft pine lignin has a molecular weight of about 25,000 to about 75,000.