A1 Journal article (refereed), original research

Alkaline partial wet oxidation of lignin for production of carboxylic acids


Open Access publication

Publication Details
Authors: Demesa Abayneh, Laari Arto, Turunen Ilkka, Sillanpää Mika
Publication year: 2015
Language: English
Related Journal or Series Information: Chemical Engineering and Technology
JUFO-Level of this publication: 1
Open Access: Open Access publication

Abstract
Production of carboxylic acids by partial wet oxidation of alkali lignin was studied experimentally. The factors influencing the different types of products, their yields and concentrations were investigated. Formic, acetic, succinic, oxalic and glutaconic acids were the main identified products. It is shown that both temperature and oxygen partial pressure have direct effects on the yield of products, whereas lignin concentration has an indirect effect. At low lignin concentrations the yield of products was relatively high. However, at higher concentrations the yield reduced. It is shown by measured lignin molecular weight distributions that this reduction is linked to repolymerization/condensation reactions of lignin fragments which compete with oxidative lignin depolymerization.

Last updated on 2017-22-03 at 14:23

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