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Energies 2012, 5(8), 2911-2942; doi:10.3390/en5082911

Household Biogas Digesters—A Review

School of Engineering, University of Borås, Borås 50190, Sweden
Author to whom correspondence should be addressed.
Received: 11 May 2012 / Revised: 27 July 2012 / Accepted: 30 July 2012 / Published: 8 August 2012
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This review is a summary of different aspects of the design and operation of small-scale, household, biogas digesters. It covers different digester designs and materials used for construction, important operating parameters such as pH, temperature, substrate, and loading rate, applications of the biogas, the government policies concerning the use of household digesters, and the social and environmental effects of the digesters. Biogas is a value-added product of anaerobic digestion of organic compounds. Biogas production depends on different factors including: pH, temperature, substrate, loading rate, hydraulic retention time (HRT), C/N ratio, and mixing. Household digesters are cheap, easy to handle, and reduce the amount of organic household waste. The size of these digesters varies between 1 and 150 m3. The common designs include fixed dome, floating drum, and plug flow type. Biogas and fertilizer obtained at the end of anaerobic digestion could be used for cooking, lighting, and electricity. View Full-Text
Keywords: biogas; household digesters; bioenergy; waste management; fixed dome digesters; floating drum digesters; plug flow digesters biogas; household digesters; bioenergy; waste management; fixed dome digesters; floating drum digesters; plug flow digesters

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MDPI and ACS Style

Rajendran, K.; Aslanzadeh, S.; Taherzadeh, M.J. Household Biogas Digesters—A Review. Energies 2012, 5, 2911-2942.

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