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1 Journal of Ecological Engineering

1 2023

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Influence of Sieve Size on Calorific Value and Proximate Properties of Bio-Briquette Composites

Aliah Hasniah, Winarti Indri, Iman Ryan Nur, Setiawan Andhy, Safarina Rizky, Sawitri Asti

Journal of Ecological Engineering

2023

Vol. 24, nr 7

25--34

This work aimed to observe the influence of calorific value and proximate properties in the fabrication of rice husk (RH) and coffee shell (CS) briquettes composite. Rice and coffee husks contain cellulose, hemicellulose, and lignin. These contents are necessary for the adhesive to bind the briquette (amylose and amylopectin). The raw materials were carbonized at 400 °C for 60 minutes. Variations of sieving size (60, 80, and 100 mesh) and the composition ratio of raw material CS:RH were reviewed to study their effect. Tests of density, moisture content, volatile matter content, ash content, fixed carbon content, shatter index, combustion rate, and calorific value were carried out to determine the optimum composition. The results were obtained with the best quality at a particle size of 60 mesh with the highest calorific value of 17.422 MJ/kg. It showed that the briquettes have good quality and are comparable with the standard briquette.