Anaerobic digestion for sustainable energy: A brief review

This paper presents a review on different aspects influencing the development of household anaerobic digesters. Biogas technology has recently been considered as one of the few most promising renewable and sustainable energies. However, there exists certain challenges to household digester's dissemination. Some of these challenges are very critical to the appreciation of anaerobic digestion processes as well as systems. The type of waste, feeding regime, temperature, pressure, retention time, hydrogen ion concentration and the carbon-to-nitrogen ratio are considered to be very important factors for optimum anaerobic digestion processes. The plant sustainability and the quality of anaerobic digestion biproducts are also considered very important during design and implementation stages.