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Title: A hybrid biogas system for Kolkata
Authors: Pollard, A.M.
Blanchard, Richard E.
Keywords: Biofuel
Biogas production
Anaerobic digestion
Renewable energy
Municipal solid waste
Solar thermal
Issue Date: 2014
Publisher: © IEEE
Citation: POLLARD, A.M. and BLANCHARD, R.E., 2014. A hybrid biogas system for Kolkata. In: Proceedings of 2014 1st International Conference on Non-Conventional Energy (ICONCE), Kalyani, India, 16-17 January, pp. 111-116.
Abstract: Municipal solid waste (MSW) is a global problem. Four processes for treatment include landfilling, incineration, recycling and composting the organic fraction. Landfilling can cause the release of the potent greenhouse gas methane into the atmosphere. In many parts of the world, including the European Union, legislation to limit the amount of generated Organic Fraction Municipal Solid Wastes (OFMSW) going to landfill has been introduced. An alternative to landfilling is to anaerobically digest the OFMSW. This paper investigates the concept of a Hybrid Biomass System (HBS) consisting of solar thermal Flat Plat Collector (FPC) providing heat energy to the thermophilic (55oC) anaerobic digestion process, and the potential energy yield of hotel OFMSW in Kolkata. The methodology comprises development and assessment of a theoretical model representing the anaerobic digestion process for optimum biogas yield and TRNSYS simulation of a 5m2 and 10m2 FPC. Theoretical biogas production rates derived are 0.44m3/kgVS or 0.21m3 biogas/guest/day with a C/N ratio of 35:1. 5m2 and 10m2 FPC simulations maintained the thermophilic temperature of 55oC within -1.9 and +2.1. 10m2 FPC provides largest energy contribution at 11% of the annual energy requirement. In is concluded that FPCs can support thermophilic digester heating requirements with heat store or direct integration. In order to meet optimum biogas yield, legislation and policy is required to evolve the current waste management processes with emphasis on infrastructure development and source segregation.
Description: © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Version: Accepted for publication
DOI: 10.1109/ICONCE.2014.6808701
URI: https://dspace.lboro.ac.uk/2134/15423
Publisher Link: http://dx.doi.org/10.1109/ICONCE.2014.6808701
ISBN: 9781479933402
Appears in Collections:Conference Papers and Contributions (Mechanical, Electrical and Manufacturing Engineering)

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