Optimization of the Biopellet Manufacturing Process: Effect of Adhesive Concentration with Recycled Coffee Grounds and Cocopeat on Biopellet Properties
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Abstract
Biopellets are an environmentally friendly organic waste management solution. The use of biopellets can help reduce negative impacts on the environment and create a cleaner and healthier environment. In this study, coffee grounds and cocopeat waste were used as the main raw materials for the biopellet making process with a ratio of 1:1, The quality testing of biopellets includes ash content, calorific value, moisture content, and combustion rate due to the effect of tapioca flour adhesiv concentration with variations in composition of 10%, 15%, and 20%. The results of this study show that the concentration of tapioca flour adhesives has a significant impact on the quality of biopellets. The adhesive's concentration increases with moisture and ash content, while decreasing its calorific value. Biopellets with an adhesive concentration of 10% have the lowest moisture content and ash content values of 5.76% and 2.02% and the highest calorific value of 4842.33 Cal/gr with a combustion rate of 2.0 gr/min. Overall, biopellets that meet the SNI 8675:2018 standard are biopellets with adhesive concentrations of 10% and 15%, while biopellets with adhesive concentrations of 20% have not met because the calorific value is still less than 4000 Cal/gr.
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