Abstract:
Biogas generation plants using organic waste are a daily reality that can be observed in different areas of waste disposal that exist in many cities of the world. In fact, the generation of biogas through anaerobic bio-digestion of urban wastes has a high impact in terms of energy use and reduced environmental liabilities. The present study focuses on the assessment of biogas production for domestic consumption; several biodigesters
were tested in order to evaluate the biogas production under
standard pressure and temperature. The test estimates volume
of biogas being produced, substrate pH and substrate concentration,
using different types of catalysts. A test bed was designed
for testing three digesters (A, B and C) within recycled
bottles of polyethylene terephthalate (PET), whose maximum
volume is ~0.6 liters. A 60g organic substrate compound was
placed in each bottle. The organic compound consisted of peeling
residues of potatoes, cabbage and carrots. Experimental
characterization of the mixture allowed to observe the production
of biogas for domestic use, system temperature, pH levels
achieved, mass and substrate concentration, as well as concentration
and volume of the catalyst. Further studies, with a
larger sample and monitoring the container pressure are recommended
in order to establish a more precise relation among
the whole set of experimental parameters.
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