Abstract
This study focused on the isolation of microorganisms associated with biodegradation of domestic wastes in three rural communities (Gbadagbadzu (A), Ndawangwa (B), and Kuchiworo (C)) in Lavun Local Government Area of Niger State, Nigeria, for biogas production. The biogas was produced by anaerobic microbial degradation of different biodegradable household domestic waste aided by fresh rumen of cow. The anaerobic microbial degradation was carried out in a temperature range of 250C to 320C for a detention time of 39 days for rural biogas production. The results showed the presence of the following bacteria: Bacillus cereus, Sphingobacterium yamdrokense, Clostridium perfringens, Salmonella typhi, Alkaligenes faecalis, Pseudomonas aeruginosa, Staphylococcus epidermidis, Klebsiella pneumoniae and Bacillus licheniformis while fungi isolated were Muccor pusillus and Aspergillus flavus. The research therefore shows that household domestic wastes have the potential to produce biogas with or without the addition of inoculum.
Highlights
Energy crisis and climate change are among the major problems drawing much attention all over the globe and renewable energy has been identified as one of the solutions.[1]
The highest frequency of occurrence was recorded with Bacillus cereus (35.48%) while Bacillus licheniformis had the least frequency of occurrence (2.65%) Clostridium perfringens, Sphingobacterium yamdrokense, Alkaligenes faecalis, Pseudomonas aeruginosa, Staphylococcus epidermidis Klebesiella pneumoniae and Salmonella typhi had 6.19%, 15.04, 5.30%, 3.30%, 6.19%, 15.92% and 7.96% respectively
The following microorganisms: Bacillus cereus, Sphingobacterium yamdrokense, Clostridium perfringens, Salmonella typhi, Alkaligenes Faecalis, Pseudomonas aeruginosa, Staphylococcus epidermidis, Klebsiella pneumoniae and Bacillus licheniformisMuccor pusillus and Aspergillu flavus were involved in biogas production from domestic wastes
Summary
Energy crisis and climate change are among the major problems drawing much attention all over the globe and renewable energy has been identified as one of the solutions.[1]. A disturbance of this teamwork results in reduced biogas production. 4 Controlling the biogas process in an efficient manner requires the knowledge of microbiology that results in reducing pressure on wood as fuel source and improves the. The organic waste pre-treated in the biogas process represents the substrate for various microorganisms. These includes sludge from municipal wastewater treatment plants, slaughterhouse waste, waste from the food and feed industries, source-sorted food waste and manure, grease traps, fryer fat, wastes from the dairy and pharmaceutical industries, grass silage, and domestic household wastes.[6,7] Careful removal of agro-industrial/domestic household wastes from the environment and converting them to biogas is a recommended method for development of sustainable healthy environment. Many local communities especially in developing world have no environmentally
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