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Agro-waste, a solution for rural electrification?: Assessing biomethane potential of agro-waste in inhambane province, southern mozambique
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-5014-3275
Department of Chemical Engineering, Eduardo Mondlane University, Maputo, Mozambique.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0003-2189-0105
2021 (English)In: Water, E-ISSN 2073-4441, Vol. 13, no 7, article id 939Article in journal (Refereed) Published
Abstract [en]

In this study, we investigated the biomethane potential of cassava peels from the four most common varieties of cassava grown in Inhambane Province in Mozambique, Chinhembue, Cussi, Cizangara and Nhassumbi. Agro-wastes from coconut wood and jambolan wood processing were also analyzed to give a complete analysis of the most significant sources of agro-waste in the province. The macromolecular composition (carbohydrates, lipids and proteins) was determined and used to calculate the theoretical maximum biochemical methane potential (BMP). The results show that cassava fiber and cassava peel, which are considered to be waste, are viable resources for biomethane production. Further, the results show that cassava fiber and cassava peel have a higher biomethane potential compared with sawdust, and are therefore more suitable for biomethane production. A study to investigate the effect of toxic cyanogenic glycosides and lignin on cassava peels, using pre-treatment techniques to enhance biogas yield, should be carried out. An estimate of how much electricity can be generated based on the availability of agro-waste (cassava residues) and the amount of biomethane produced in our laboratory experiment was carried out. The amount of electricity that can be produced is enough to provide a valuable contribution to the production process in small and medium sized enterprises (SMEs) and in the cassava industry, or some other use in the rural setting. 

Place, publisher, year, edition, pages
MDPI AG , 2021. Vol. 13, no 7, article id 939
Keywords [en]
Biomethane potential, Cassava fiber, Cassava peel, Sawdust, Electric power generation, Rural areas, Biochemical methane potential, Biomethane potential (BMP), Cyanogenic glycosides, Laboratory experiments, Macromolecular composition, Rural electrification, Small and medium-sized enterprise, Southern Mozambique, Plants (botany), biofuel, chemical composition, crop residue, environmental assessment, experimental study, waste technology, Electricity, Fibers, Manihot, Production, Wastes, Wood, Inhambane, Mozambique, Manihot esculenta, Syzygium cumini
National Category
Energy Systems Bioenergy
Identifiers
URN: urn:nbn:se:mdh:diva-53929DOI: 10.3390/w13070939ISI: 000638936100001Scopus ID: 2-s2.0-85103905796OAI: oai:DiVA.org:mdh-53929DiVA, id: diva2:1546567
Available from: 2021-04-22 Created: 2021-04-22 Last updated: 2023-08-28Bibliographically approved

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Mabecua, Fastudo JorgeSchwede, SebastianKlintenberg, Patrik

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