METHOD OF ENTEROSORBENT PREPARING Russian patent published in 1998 - IPC

FIELD: biotechnology, sorbents. SUBSTANCE: method involves alkaline treatment of hydrolytic lignin, the following washing out from alkali and dissolved compounds by three-fold extraction and suspension dilution with drinking water, neutralization of residual alkali with acid, lignin washing out from acid and salts by two-fold extraction and suspension dilution with drinking water followed by milling and dehydration of lignin. Lignin washing out is carried out by extraction using suspension dilution with drinking water up to the content of dry matter 40-100 g/l followed by intensive stirring of suspension for 15 min, not less, separation of cleared liquid at amount from 1/3 to 1/2 of obtained volume by decanting after its settling for 30 min, not less. Alkaline treatment and washing out of lignin is carried out in collector-mixer having ratio of height to diameter 3:1, not less. Lignin can be used as enterosorbent at different metabolic disorders and organism intoxications. EFFECT: simplified technology. 8 cl, 4 ex, 7 tbl