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High rate biomethanation using spent biomass as bacterial support

Chanakya, HN and Srivastav, Gyanendra P and Abraham, Amita A (1998) High rate biomethanation using spent biomass as bacterial support. In: Current Science, 74 (12). pp. 1054-1059.

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Methanogenic bacteria were found strongly adhered to several green biomass feedstocks digested in a solid-phase stratified bed (SSB) biogas fermenter, and hence these digested feedstocks were examined for their potential for use as methanogen support for a high-rate biogas fermenter, A 1.1 l experimental down flow fixed bed (DFFB) fermenter was operated at 35 degrees C using synthesized liquid waste, This gave gas production levels up to 6.5 l/l/d, Methanogenic activities measured on such biomass support material exhibited a potential to achieve much higher biogas production, Short-duration thermal and feed shocks were tolerated without their exhibiting typical methanogen washout characteristics. The DFFB fermenter functioned well even at 21 +/- 1 degrees C, with gas production rates up to 3 l/l/d, and thus appeared to have potential for producing biogas at small scales and at high rates from various combinations of liquid and solid biomass wastes.

Item Type: Journal Article
Publication: Current Science
Publisher: Indian Academy of Sciences
Additional Information: Copyright for this article belongs to Indian Academy of Sciences.
Department/Centre: Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited: 31 Dec 2004
Last Modified: 22 Feb 2012 09:01
URI: http://eprints.iisc.ac.in/id/eprint/1422

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