FIELD: bioprocessing, production of radioactive elements iones biosorbents. SUBSTANCE: production of radioactive plutonium iones biosorbent of increased sorption capability. For this purpose at stationary phase of pectinase producer growth additional planting of Cunninghamelia japonica BKMF-1204 culture is exercised. As cultivating process is over separated from cultural liquid biomass is washed by excess of orthophosphoric acid water solution of 0.25 - 1.00 % concentration under temperature of 10 - 50 C. Then solid phase is washed by water till pH neutral value is achieved, dried, ground and used as sorbent. EFFECT: increase of biosorbent sorption capability. 2 cl, 3 tbl
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