Pretreatment of bagasse and coconut fibres for enhanced anaerobic degradation by rumen microorganisms

Author

Amelia K. Kivaisi and S. Eliapenda

Renewable Energy, 1994, vol. 5, issue 5, pages 791-795

Abstract: The effect of chemical pretreatment and particle size on anaerobic digestion of bagasse and coconut fibres by rumen micro organisms was studied. Both chemical pretreatment and pa rticle size affected total fibre degradation and productions of methane and volatile fatty acids from these waste materials significantly (P < 0.05) compared to the untreated materials. Pretreatment of bagasse with sodium hydroxide, hydrochloric acid and ammonium hydroxide followed by incubations for 168 h increased fibre degradation by 11, 31 and 14 %, respectively. Pretreatment of coconut fibres increased their extent of degradation by 55, 74 and 46 %, respectively. Methane yield from bagasse was increased by 44, 32, and 22 %, and that from coconut fibres was increased by 73, 76 and 46 %, respectively. With the same pretreatment, amounts of volatile fatty acids produced from bagasse and coconut fibres increased by 42, 37 and 11 %, and 40, 28, and 11 %, respectively.

Keywords: Bagasse; coconut fibres; pretreatment; anaerobic digestion; rumen microorganisms (search for similar items in EconPapers)
Date: 1994
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