METHOD OF SELECTIVE EXTRACTION OF PHOSPHORUS IN FORM OF BIOMASS FROM SOLID MATERIALS Russian patent published in 2014 - IPC C02F3/34 C02F3/30 C02F1/52 C02F1/62 C02F101/10 C02F101/20 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to field of biotechnology. Acidic leaching liquid is obtained by enrichment of leaching aerobic sulphur-acidifying microorganisms by their cultivation in water-containing initial material, which contains polyphosphate-accumulating microorganisms, subjected to action of anaerobic conditions. Processing of solid material which contains heavy metals and phosphates is performed with leaching liquid, with release of heavy metals and phosphates from said solid material and absorption of released phosphates by polyphosphate-accumulating microorganisms. Enriched with phosphorus biomass is separated. Also claimed is microbial composition, obtained by enrichment of leaching aerobic sulphur-oxidising microorganisms in water-containing initial material, containing polyphosphate-accumulating microorganisms, subjected to action of anaerobic conditions. Initial material is cultivated with addition of source of oxidised sulphur in aerobic conditions at temperature from 15 to 37°C until pH value 4.0 or lower is achieved. Obtained phosphorus-enriched biomass is applied as nutrition source for plants.

EFFECT: claimed is method of selective extraction of phosphorus in form of biomass from solid materials, which contain heavy metals and phosphates.

13 cl, 3 dwg, 1 ex