title: Evaluation of the suitability and performance of cassava waste (peel) extracts in a microbial fuel cell for supplementary and sustainable energy production.
abstract: In a number of energy-poor nations, peel from cassava processing represents one of the most abundant sources of lignocellulosic biomass. This peel is mostly discarded indiscriminately and eventually constitutes a problem to the environment. However, energy can be extracted from this peel in a microbial fuel cell. In this study, the viability of cassava peel extract as a substrate in a single-chamber air cathode microbial fuel cell is demonstrated, and optimum performance conditions are explored. The effects of different pretreatments on the extract are also discussed in the context of observed changes in the internal resistances, conductivity and Coulombic efficiencies. At the best conditions examined, the extract from cassava peel fermented for 168 h and adjusted to a pH of 7.63 attained a peak voltage of 687 mV ± 21 mV, a power density of 155 mW m-3of reactor volume and a Coulombic efficiency of 11 %. Although this energy is limited to direct use, systems exist that can effectively harvest and boost the energy to levels sufficient for supplementary energy usage in cassava producing regions.
authors: McGill University Faculty of Agriculture and Environment, Canada.
authors: Ademola
authors: A
authors: Adekunle
authors: McGill University Faculty of Agriculture and Environment, Canada.
authors: Vijaya
authors: V
authors: Raghavan
mesh_terms: D001674:Bioelectric Energy Sources; D057919:Biological Oxygen Demand Analysis; D004553:Electric Conductivity; D004867:Equipment Design; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D002365:Manihot / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D014866:Waste Products
chemical_list: D010936:Plant Extracts; D014866:Waste Products
keywords: Cassava peel; agricultural processing waste; lignocellulosic biomass; microbial fuel cell; renewable energy