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IJSTR >> Volume 9 - Issue 8, August 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Techno-Economic Aspects Of Electricity Generation From A School Biogas Digester

[Full Text]

 

AUTHOR(S)

Nothando K. Mkhabela, Patrick Mukumba, Golden Makaka

 

KEYWORDS

Biogas technology, techno-economic analysis, animal waste, human waste.

 

ABSTRACT

This study assesses the technical and economic aspects of electricity generation from school biogas digesters using human wastes as substrate. The study focuses on all rural low-income schools with an enrolment of 300, 500, 700, 900 and 1100 learners respectively. The research is important The schools’ total energy demands of 1342kWh, 2082 kWh, 2491 kWh, 2683 kWh and 3093 kWh /month respectively. The designed biogas digesters have volumes of 4 m3, 7 m3, 9 m3, 12 m3 and 14 m3 respectively. The profitability values were 35%, 53 %, 56%, 58%, and 59%, respectively. Finally, the payback period values are 2.6 years, 1.9 years, 1.8 years, 1.7 years and 1.6 years respectively. The study is recommended because it will not only provide energy for all rural low- income schools, but also help reduce air pollution, environmental pollution and help the schools to generate some income from selling the biogas.

 

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