Siberian Federal University

Possible directions and method of utilization of industrial lignins - large-tonnage waste of pulp and hydrolysis plants were considered in this survey. Ways of lignins utilization in the initial form are based on the use of their dispersing, adhesive and surface-active properties. They are used in different branches of industry as dispersing, antiaging, binding, and glue agents, emulsifiers, filling compounds, sorption materials. Chemical modification of lignins allow of obtain new products for different fields of application: nitrolignin and chlorlignin for boring, sulfonated lignin for dyes dispersion, biodegraded polymers etc. Chemical processing of lignins makes also possible to obtain aromatic aldehydes, organic acids, liquid fuels. The most large-scale direction of industrial lignins utilization is the synthesis of carbon sorbents. At present the new methods of lignin thermal conversion to porous carbon materials with regulated sizes of pores, with required surface functional groups and high strength properties are studied.