Conference article

Improvement of Sweet Sorghum Bagasse Hydrolysis by Alkali and Acidic Pretreatments

Amir Goshadrou
Department of Chemical Engineering, Isfahan University of Technology, Iran

Keikhosro Karimi
Department of Chemical Engineering, Isfahan University of Technology, Iran \ School of Engineering, University of Borås, Sweden

Mohammed J. Taherzadeh
School of Engineering, University of Borås, Sweden

Download articlehttp://dx.doi.org/10.3384/ecp11057374

Published in: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:50, p. 374-380

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Published: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

The present work deals with enzymatic hydrolysis of sweet sorghum bagasse to fermentable sugars. The bagasse was treated with phosphoric acid and sodium hydroxide prior to enzymatic hydrolysis by commercial cellulase and ß-glucosidase. The phosphoric acid pretreatment was performed at 50°C for 30 min; while 12% NaOH was used for the alkali treatment at 0°C for 3 h. The phosphoric acid pretreatment resulted in improving the subsequent enzymatic hydrolysis up to 79% of the theoretical yield. However; the best results of enzymatic hydrolysis were obtained in the hydrolysis of pretreated bagasse by NaOH solution; where more than 92% of the theoretical sugar yield was obtained.

Keywords

Lignocellulosic material; Sweet sorghum; Enzymatic hydrolysis; Pretreatment

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