Household Biogas Digesters—A Review

Karthik Rajendran, Solmaz Aslanzadeh and Mohammad J. Taherzadeh
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Karthik Rajendran: School of Engineering, University of Borås, Borås 50190, Sweden
Solmaz Aslanzadeh: School of Engineering, University of Borås, Borås 50190, Sweden
Mohammad J. Taherzadeh: School of Engineering, University of Borås, Borås 50190, Sweden

Energies, 2012, vol. 5, issue 8, 1-32

Abstract: 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 m 3 . 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.

Keywords: biogas; household digesters; bioenergy; waste management; fixed dome digesters; floating drum digesters; plug flow digesters (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2012
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (48)

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