Biodelignification of agricultural and forest wastes: Effect on anaerobic digestion

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• 作者：Maria J. L贸pez ; Francisca Su谩rez-Estrella ; Maria C. Vargas-Garc铆a ; Juan A. L贸pez-Gonz谩lez ; Steven Verstichel ; Lies Debeer ; Isabella Wierinck ; Joaquin Moreno
• 关键词：Biogas ; Methane ; Biodegradability ; Lignocellulose ; Ligninolytic ; Phanerochaete flavido-alba
• 刊名：Biomass and Bioenergy
• 出版年：November, 2013
• 年：2013
• 卷：58
• 期：Complete
• 页码：343-349
• 全文大小：755 K

文摘

Four lignocellulosic wastes (wood fiber, grass, corn stover and wheat straw) were treated with the ligninolytic fungus Phanerochaete flavido-alba to improve their anaerobic digestion. After 21 days solid substrate culture, lignin content was depleted in all materials by fungus in a range between 5 and 20%, but cellulose and hemicellulose were also biodegraded. Anaerobic biodegradability of corn stover, grass and wood fiber increased as a consequence of fungal treatment. Biogas production was enhanced only in wood fiber. Fungal delignified wood fiber produced 124 NL biogas kg^鈭? dry wood fiber with a 64% methane, after 21 days anaerobic digestion; while non-inoculated controls did not produce any biogas. Pre-digestion of agricultural wastes (corn stover, grass and wheat straw) before biodelignification treatment failed to improve subsequent biogas production.