Journal of Siberian Federal University. Chemistry / Optimization of the Process of Water-Ethanol Extraction of Ethanollignin from Siberian Larch Wood

Full text (.pdf)
Issue
Journal of Siberian Federal University. Chemistry. 2018 11 (3)
Authors
Rudkovskiy, Alexey V.; Kuznetsova, Svetlana A.; Chesnokov, Nikolai V.; Kuznetsov, Boris N.
Contact information
Rudkovskiy, Alexey V.: Institute of Chemistry and Chemical Technology SB RAS FRC “Krasnoyarsk Science Center SB RAS” 50/24 Akademgorodok, Krasnoyarsk, 660036, Russia; Kuznetsova, Svetlana A.: Institute of Chemistry and Chemical Technology SB RAS FRC “Krasnoyarsk Science Center SB RAS” 50/24 Akademgorodok, Krasnoyarsk, 660036, Russia; Kuznetsov, Boris N.: Institute of Chemistry and Chemical Technology SB RAS FRC “Krasnoyarsk Science Center SB RAS” 50/24 Akademgorodok, Krasnoyarsk, 660036, Russia;
Keywords
ethanol-lignin; larch wood; water-ethanol extraction; optimization
Abstract

It was carried out optimization of the process of water-ethanol extraction of ethanol-lignin from Siberian larch wood by calculation methods. A two-parameter mathematical model of the extrac-tion process based on the central second-order Kono composite plan was created. The influence of two parameters – the concentration of aqueous ethanol and temperature – on the degree of delignification of wood was studied. It was shown that the selected parameters are statistically independent of each other. The response surface is a parabolic cylinder. Optimal conditions for the process of the bark wood extraction which corresponds to the maximum yield of ethanollignin were determined: temperature 220 °C and ethanol concentration 70% vol

Pages
436-446
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/107072