FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing nanocrystalline cellulose used in industry. The disclosed method includes hydrolysis of bleached pulp with sulphuric acid or hydrochloric acid, followed by separation of nanocrystalline cellulose and separation of liquid wastes into a monosaccharide fraction and an oligosaccharide fraction using a pair of selective membranes.
EFFECT: novel efficient and cheap method of producing nanocrystalline cellulose, which enables to produce other valuable carbohydrates and recycle acid used in production of nanocrystalline cellulose.
20 cl, 2 dwg, 2 tbl
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