Biotransformation of the organic fraction of municipal solid wastes to bioethanol

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Abstract
Poor management of municipal solids wastes is leading to pollution of the oceans, causing flooding, transmitting diseases, and affecting flora and fauna worldwide. Of municipal solids wastes, 52% represent organic fraction, which, due to their carbohydrate content are likely to be used for the generation of bioethanol by liquid or solid fermentation. For this, various process configurations have been developed, which include studies of strain selection, substrate pre-treatment, and type of bioreactor. With this, bioethanol production yields from 30 to 100 g/L were obtained from different organic wastes. However, it is necessary to optimize operating conditions to ensure a profitable process at the industrial level.

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