Abstract:
Biomass is one of the most promising energy sources to mitigate greenhouse gas emission during production and utilization. However, majority of biomass are not suitable to be utilized as fuel without an appropriate process since they are bulky, uneven and have low energy density. These characteristics make them difficult in handling, storage, transport and utilization. One of the promising solutions to overcome these problems is the briquetting technology. The study was conducted to characterize sesame stalk briquette as an alternative source of energy. The data collection result indicates that more than 41,265,999.9 kg of charcoal can be produced from the available sesame stalk in Metema at a 42.8% conversion efficiency of the carbonizer. Briquettes were produced by mixing carbonized sesame stalk with okra pod (Abelmoschus esculentus) in weight percentage levels of 10%, 15%and 20%. The experimental results revealed that the mixture that the 10% okra briquette had the highest volatile matter and heating value of 68.20% and 18.04MJ/kg while maintaining the lowest ash content and moisture content of 5.56% and 10.76% respectively. Conclude that the fuel briquette produced from sesame stalk residue have high potential as an alternative source of energy, helps to solve health problems and shortage of energy and reducing the deforestation rate.
Key words: Abelmoschus esculentus, sesame stalk, briquette, calorific value