FIELD: chemistry.
SUBSTANCE: method includes crushing and fractioning of initial raw material, delignification of initial raw material, which includes alkaline hydrolysis with further washings, two-stage acidic hydrolysis with intermediate neutralisation and three washings, bleaching with three washings with ozonation, with possible additional stages of homogenisation and drying.
EFFECT: invention makes it possible to obtain final product, possessing high absorbing and adsorbing properties, high water retention coefficient.
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