Two-stage banana leaves wastes utilization towards mushroom growth and biogas production
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ORIGINAL ARTICLE
Two‑stage banana leaves wastes utilization towards mushroom growth and biogas production Edwin N. Richard1,2 · Askwar Hilonga3 · Revocatus L. Machunda1 · Karoli N. Njau1 Received: 7 April 2020 / Accepted: 28 October 2020 © King Abdulaziz City for Science and Technology 2020
Abstract Banana leaves wastes (BL) were subjected to fungal treatment using Pleurotus ostreatus to produce edible mushrooms and biogas in the anaerobic digestion process. Effects of fungal treatment on mushrooms production, lignin degradation, trace elements compositions and biogas yield during the anaerobic digestion process were evaluated. Treatment with P.ostreatus for 36 d resulted in the production of 181 ± 19 g of edible mushrooms per 2 kg of BL with biological efficiency of 37 ± 4%. Lignin concentration in fungal treated BL decreased by 10% indicating an improvement on its digestibility. Important trace elements (Fe, Mn, Mo, Co and Ni) necessary for the improvement of the anaerobic digestion process were also significantly reduced (P
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