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Paper Details

Biovalorization of Banana waste:Auditing and improvement of bio-methane production by fungal pre-treatment

Emmanuel Elijah Salyeem1, Anthony Manoni Mshandete2*and Amelia Kajumulo Kivaisi2

Journal Title:Journal of Chemical, Biological and physical sciences

Bananas is an important staple food and cash crop in Tanzania, which generates huge waste quantities, currently underutilized and discarded causing detrimental impact to the environment. However, representsun-tapped bio-resource for bio-valorization into valuable bio-products. A waste audit case study was conducted for four common cultivars, Mshare-Kahuti, Mbwailuma (Matoke), Kisukari-Mshare and Kimalindiat Horticulture Research and Training Institute, Tengeru, Arusha, Tanzania. Wastes quantities generated annually from one hectare were estimated at 57, 99, 64 and 125 tons/year for Mshare-Kahuti, Mbwailuma (Matoke), Kisukari-Mshare and Kimalindi, respectively. Methane yield of various wastes fresh fractions of Mshare-Kahuti (for cooking) and Kisukari-Mshare (for desserts) were investigated in batch anaerobic bioreactors (BAB). The highest methane yields for Mshare-Kahutiof 0.273 and Kisukari- Mshare of 0.255m3CH4/kg of volatile solids (VS) added were recorded from corm and peels banana waste fractions, respectively. The effect of solid state-fermentation pretreatment of banana wastes with Pleurotus sapidus (P 969) at 10% (wet wt bases) for 7, 14 and 21 incubation days on the extent of methane yield was also investigated in BAB. Maximum methane yields for Mshare-Kahuti and Kisukari-Mshare were 0.96and0.99m3CH4/kg VS added, respectively recorded at 21days incubation period. Maximum methane yield represented an increment of 77-631% for Kisukari-Mshare and Mshare- Kahuti, respectively, which was significant at (p