DELIGNIFICATION OF VEGETABLE RAW MATERIAL CATALYTIC BY HYDROGEN PEROXIDE AND PEROXI-COMBINATIONS (REVIEW)

Abstract

Given review is a publication of the studies result in the field of vegetable raw material delignification by the hydrogen peroxide and by the peroxicombinations, carried out in Siberian State University after publishing of the previous review by the authors on same themes in 2005 year. Basically these studies are directed on decision of the following problems: more accurate definition of the technological characters of the process coniferous wood delignification with catalytic complex, including titanium dioxide, sodium tungstate and sodium molybdate, sulfuric acid; intensification of wood soaking by the peroxide cooking solution with using of vacuum and ultrasound; the receipt and estimation of the peroxide cellulose properties from of wheat straw stems, study of the straw cellulose particularities bleaching, elaboration of the one-stage process to receipt of the microcrystalline cellulose; concentration of organic substances of the peroxide waste solution by the ultrafiltration, estimation its heating value.