Anaerobic retting of banana and arecanut wastes in a plug flow digester for recovery of fiber, biogas and compost

Chanakya, HoysallN and Sreesha, Malayil (2012) Anaerobic retting of banana and arecanut wastes in a plug flow digester for recovery of fiber, biogas and compost. In: ENERGY FOR SUSTAINABLE DEVELOPMENT, 16 (2). pp. 231-235.

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Abstract

Leaves and leaf sheath of banana and areca husk (Areca catechu) constitute an important component of urban solid waste (USW) in India which are difficult to degrade under normal windrow composting conditions. A successful method of anaerobic digestion built around the fermentation properties of these feedstock has been evolved which uses no moving parts, pretreatment or energy input while enabling recovery of four products: fiber, biogas, compost and pest repellent. An SRT of 27 d and 35 d was found to be optimum for fiber recovery for banana leaf and areca husk, respectively. Banana leaf showed a degradation pattern different from other leaves with slow pectin-1 degradation (80%) and 40% lignin removal in 27 d SRT. Areca husk however, showed a degradation pattern similar to other plant biomass. Mass recovery levels for banana leaf were fiber-20%, biogas-70% (400 ml/g TS) and compost-10%. For areca husk recovery was fiber-50%, biogas-45% (250 ml/g TS) and compost-5%. (C) 2012 Elsevier Inc. All rights reserved.

Item Type:	Journal Article
Publication:	ENERGY FOR SUSTAINABLE DEVELOPMENT
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copy right for this article belongs to Elsevier Inc.
Keywords:	Banana leaf fiber;Areca-husk fiber;Biogas;Anaerobic digestion;Plug flow digester
Department/Centre:	Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited:	30 Jul 2012 05:01
Last Modified:	03 Aug 2012 04:51
URI:	http://eprints.iisc.ac.in/id/eprint/44864

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