Siberian Federal University

The physico-chemical studies of experimental batches of microcrystalline cellulose (MCC), glucose hydrolyzate and soluble lignin, obtained from birch wood in a pilot plant were carried out. It was shown that the properties of experimental batches of MCC, glucose hydrolyzate and soluble lignin correspond to samples obtained from birch wood under laboratory conditions. The yield of MCC with a residual lignin content no more than 1 mas. % reaches 70 % from the mass at initial cellulose in wood. The characteristics of obtained MCC corresponds to industrial microcrystalline cellulose. The degree of polymerization of the MCC sample is of 655, its crystallinity index of 0.73, the crystallite size of 3.2 nm. Glucose hydrolysates for bioethanol synthesis were obtained by MCC hydrolysis with concentrated sulfuric acid at 25 °C. It was established that the composition of experimental batch of glucose hydrolyzate (glucose content – 83.2 mas. %, of furfural – 0.22 mg / ml, 5-HMF – 0.48 mg / ml, levulinic acid – trace amount) corresponds to composition of laboratory samples of hydrolysates. The side product lignin has an elemental composition (mas. %): C – 58.84, H – 5.81, O – 35.15; ash content of 0.94, softening temperatures 115–138 °C. Lignin can be used for obtaining enterosorbents and nanoporous carbon sorbents, as well as a binder for briquetted biofuels. Obtained results have been used for the development of technological regulations of birch wood complex processing to biofuels and chemicals