Household Biogas Digesters—A Review

Energies

Karthik Rajendran¹  Solmaz Aslanzadeh² 

[1] School of Engineering, University of Borås, Borås 50190, Sweden;

关键词: biogas;    household digesters;    bioenergy;    waste management;    fixed dome digesters;    floating drum digesters;    plug flow digesters;   

DOI  :  10.3390/en5082911

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.