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European Journal of Wood and Wood Products

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11-03-2019 | Brief Original

Desulfurization of lignin produced by hydrolysis of wood with dilute sulfuric acid

Authors: Andrey N. Evdokimov, Alexander V. Kurzin, Olesya V. Fedorova, Alena D. Trifonova

Published in: European Journal of Wood and Wood Products | Issue 3/2019

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Abstract

The hydrolysis (or hydrolytic) lignin as a byproduct of ethanol production is made by the treatment of wood with a sulfuric acid solution. It contains up to 2% total sulfur. This work proposes the hydrolysis lignin desulfurization by acid–base methods. These methods are based on data on the presence of residual sulfuric acid and its reaction products (organic sulfates and sulfonates) with wood components in the hydrolytic lignin. It was found that the sodium hydroxide treatment has the best desulfurizing effect, which allowed reducing the total sulfur content to 25 ppm.

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Title: Desulfurization of lignin produced by hydrolysis of wood with dilute sulfuric acid
Authors: Andrey N. Evdokimov
Alexander V. Kurzin
Olesya V. Fedorova
Alena D. Trifonova
Publication date: 11-03-2019
Publisher: Springer Berlin Heidelberg
Published in: European Journal of Wood and Wood Products / Issue 3/2019
Print ISSN: 0018-3768
Electronic ISSN: 1436-736X
DOI: https://doi.org/10.1007/s00107-019-01398-8

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