FIELD: chemistry.
SUBSTANCE: invention relates to agriculture. The method of producing humic fertiliser for organic farming, meant for treating soil and vegetative plants, wherein said fertiliser is obtained in two steps: at the first step, natural humic acids contained in brown coal are transferred into an aqueous solution in form of ammonium humate by treating with 1.5-2.0% aqueous ammonium hydroxide solution to pH 6.9-7.1 with the ratio of the liquid component to the solid component of 7-7.5:1, and the obtained solution is separated from the mineral ballast which is not chemically bonded to the humic acids; and at the second step, metal cations chemically bonded to the ammonium humate are removed from the ammonium humate solution by treating with a cationite to pH 4.0-4.2.
EFFECT: invention enables to obtain water-soluble humic acids which do not container both the mineral ballast and metal cations.
2 cl, 4 tbl, 8 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMPLEX FERTILIZERS PRODUCTION PROCESS | 2000 |
|
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|
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| METHOD OF PRODUCTION OF WATER-SOLUBLE SALTS OF HUMIC ACIDS | 2011 |
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