HUMIC ACID SYNTHESIS METHOD Russian patent published in 2011 - IPC C05F11/00 

FIELD: chemistry.

SUBSTANCE: raw material used to extract humic acids is plant litter which is first crushed to particle size of not more than 1 mm and undergoes thermal treatment at t=145-150°C, followed by alkaline extraction, filtration of the extract and precipitation of the humic acids from the solution by adding hydrochloric acid and then separating the residue from the solution.

EFFECT: invention enables to obtain humic acids which can be used in fertiliser production, in medicine when preparing antifungal agents, and during remediation of soil-contaminated soil and water.

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