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

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...

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Veröffentlicht in:	European journal of wood and wood products 2019-05, Vol.77 (3), p.491-493
Hauptverfasser:	Evdokimov, Andrey N., Kurzin, Alexander V., Fedorova, Olesya V., Trifonova, Alena D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Biomedical and Life Sciences Brief Original Ceramics Composites Desulfurization Desulfurizing Ethanol Glass Hydrolysis Life Sciences Lignin Machines Manufacturing Natural Materials Processes Reaction products Sodium hydroxide Sulfonates Sulfur Sulfur content Sulfuric acid Wood Science & Technology
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Beschreibung
Zusammenfassung:	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.
ISSN:	0018-3768 1436-736X
DOI:	10.1007/s00107-019-01398-8