Biodigesters in microscale in the context of contemporary social practices
Anaerobic biodigestion of the organic fraction of solid waste (OFSW) is a contemporary practice, which allows the proper treatment of waste and the generation of energy through biogas production, thus being related to the problems and solutions of our time. Distributed generation (DG) has been proposed as a way to obtain energy from regionalized sources, for this purpose a microbiodigester that caould be used by people in their homes, neighborhoods and various institutions was buit and tested. With a focus on Citizen and Garage Science, among other current practices, an alternative method of analyzing the stability of the biodigester is presented. Such a system makes use of various substrates found in urban and peri-urban space, which were characterized by the biochemical methane potential (BMP) determination., t. During a 30-day period, the measurement of biogas production and the biodigester feed was monitored, allowing to characterize the specific production of biogas and the stability of the system. The reactor operated in a relatively stable way for several months, being fed with food wastes, pet wastes, among other substrates, it was estimated that using the entire organic fraction of solid waste would double the duration of a 13 kg liquified petrol gas bottle for cooking of a family of 3 people.