METHOD OF ISOLATING HUMUS ACIDS FROM SAPROPEL Russian patent published in 2005 - IPC

FIELD: biologically active substances.

SUBSTANCE: invention relates to isolation of humus acids (humin acids and fulvene acids) from natural-origin humate-containing substances, in particular from sapropel, to use them in manufacture of organomineral fertilizers, biologically active additives used in manufacture of therapeutic preparations and pharmaceutical products. Method comprises treating wet sapropel with potassium pyrophosphate solution and simultaneously affecting sapropel with ultrasound with frequency 22-23 kHz and emission power 50-160 W/dm³ for at least 90 min. Weight ratio of wet sapropel to potassium pyrophosphate does not exceed 100:1.

EFFECT: simplified process and increased productivity.

3 cl, 1 tbl, 9 ex