Trembus I.V.

Obtaining of straw pulps by peracetic pulping method of delignification

The paper studies the influence of the basic technological parameters of obtaining straw fibrous semifinished products by the peracetic method of delignification. Using the method of full factorial experiment, we obtain the regression equations of producing straw fibrous semi-finished products. Furthermore, we determine main kinetic characteristics of the delignification process of wheat straw

Resource Recycling Technologies Stems Miscanthus

Processes of obtaining pulp from Miscanthus stems for the production of paper and cardboard, microcrystalline cellulose and pellets were investigated. The chemical composition of Miscanthus giganteus stems was determinated. Established that the Miscanthus contains more cellulose, pentosans, minerals and less lignin than wood. The influence of main technological parameters on the quality indexes of organosolv pulp obtained from Miscanthus stems was investigated. The use of miscanthus organosolv pulp in composition of writing paper and paperboard container was experimentally confirmed.

Solvent Delignification of Kenaf and Sugar Sorghumstems

The chemical composition of stalks of kenaf and sugar sorghum was studied. Established that the kenaf and sugar sorghumstalks contain more cellulose, pentosans, minerals and less lignin than wood. The influence of main technological parameters on the quality indexes of organosolvent pulp obtained from kenaf and sugar sorghum stems was investigated. The possibility of bleaching organosolvent pulp obtained from stems of kenaf using hydrogen peroxide without chlorinecompounds to 80 % whiteness was experimentally proved.

Rationale Method of Holocellulose Contents Determination in Non-Wood Plant Materials

Method of determination of holocellulose contents in non-wood plant raw materials with taking into account the peculiarities of their anatomical structure and chemical composition was proposed. It was shown that the sustainable level of concentration peracetic acid and hydrogen peroxide determined after seven days of saturation of the solution. The dependences of the holocellulose contents on the duration of treatment different representatives of annual plants were established.

Optimization of organosolvent methods for obtaining straw pulp

The present paper considers the adequate statistical models of delignification of the wheat straw by alkaline–sylphite–alcohol, ammonium–sylphite– alcohol and double-stage alkaline–alcohol methods, using anthraguinone, obtained as a result of mathematical treatment and full factorial experiment of 22 type. Furthermore, using Harrington criterion, we carry out the search for optimal values of technological parameters. Specifically, we establish that the alkaline sulphite–alcohol method turns out to be the most suitable for obtaining straw pulp.