Numerical Optimization of the Process of Cellulose Isolation by Peroxide Delignification of Birch Wood in Acetic Acid-Water Medium in the Presence of TiO₂ Catalyst
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Published:2021-03
Issue:1
Volume:14
Page:120-132
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ISSN:1998-2836
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Container-title:Journal of Siberian Federal University. Chemistry
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language:
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Short-container-title:J. Sib. Fed. Chem.
Author:
Garyntseva Natalya V., ,Sudakova Irina G.,Chudina Anna I.,Kuznetsov Boris N.
Abstract
The possibility of isolation of high-quality cellulose by peroxide delignification of birch wood in an acetic acid-water medium in the presence of a TiO2 catalyst at a temperature of 100 °C was shown. The influence of the process conditions (concentration of hydrogen peroxide and acetic acid, liquid/wood ratio (LWR)) on the yield and composition of cellulose products was established. Numerical optimization of the process was carried out using a full factorial experiment. The optimal conditions for isolation from birch wood a cellulose product with residual lignin content of ≤ 1 wt.% are: СН3СООН concentration 23.8 wt.%, Н2О2 concentration 4.9 wt.%, LWR14.9, temperature 100 °C, time 4 h. Under these optimal conditions, the yield of a cellulose product with a cellulose content of 92.5 wt.% was 49.9 wt.%
Publisher
Siberian Federal University
Subject
General Chemical Engineering,General Chemistry