Psychrophilic anaerobic codigestion of food waste and dog feces in a homemade biodigester: biogas production and thermal efficiency
Keywords:
Recovery of organic waste, Environmental management, Renewable energy, MethaneAbstract
The inadequate management of domestic organic waste generates several environmental and human health problems such as the generation of greenhouse gases, water contamination, spread of vectors and diseases. The biogas production of a full-scale digester was evaluated for the recovery of a mixture of food waste and dog feces. A two-phase tubular-type system was manufactured using 1.00 mm thick geomembrane with working volumes of 0.75 m3 and 0.25 m3 for the liquid and gas phases, respectively. Once the stabilization stage was completed, during the biogas production monitoring stage lasting 31 days under psychrophilic conditions, an average daily biogas production of 101.66 L was obtained, with an average composition of 59.36% methane, reaching an efficiency thermal of 39.95%. The average yield of the system was 188.41 L kg-1 of waste.
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