Abstract: The problem of global warming is world widely known. One of the causes of this situation is the increase in the emission of greenhouse gasses from the utilization of fossil fuel. One of the possible solution to this environmental degradation is the production of biofuel from lignocellulosic biomass. Bioethanol is a widely liquid biofuel which is sustainable and environmentally friendliness. Mango seeds, a renewable and abundant resources can serve as an alternative lignocellulosic biomass for the production of bioethanol which solved the problem of energy required and environmental degradation to more sustainable source of energy. This study was carried out to produce bioethanol from mango (Mangifera indica) seeds. The seeds was sundried, grounded into fine powdered and pretreated using combination of different concentrations of organic and inorganic dilute acids hydrolysis . Physico-chemical analysis of the raw sample and pretreated sample was analyzed. Reducing sugar was determined after hydrolysis using UV Spectrophotometer at 540nm with p H of 4.5. The results of the physic-chemical analysis revealed high carbohydrate, moisture and crude fibre content with significant ash content. Also, 40.97%, 24.30% of cellulose and hemicelluloses content respectively. The results of the pretreated sample shows decrease in lignin and hemicelluloses content and increase in cellulose content. The high reducing sugar was noticed with 20.97 in 15%/10% of formic acid/hydrochloric acid pretreatment. The highest yield of bioethanol was observed in 15%/10% with 39% bioethanol yield. The results indicates the suitability of mango seeds as a good potential resources for quality bioethanol.

Keywords: Lignocellulosic biomass, Renewable energy, Mango seeds, Fossil fuel., Bioethanol

Downloads: | DOI: 10.17148/IARJSET.2025.121007