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Utilization of Cassava Peel (Manihot utilissima) Waste as an Adhesive in the Manufacture of Coconut Shell (Cocos nucifera) Charcoal Briquettes

1Energy Engineering Laboratory, Departement of Renewable Energy Engineering, Politeknik Negeri Jember, Jl. Mastrip 164 Jember 68121, Indonesia

2Graduate Program of Mechanical Engineering, Universitas Sebelas Maret, Jl. Ir. Sutami No.36 Surakarta, 57126, Indonesia

3Department of Chemistry, Universitas Jember, Jl. Kalimantan 37 Kampus Tegalboto, Jember 68121, Indonesia

4 Department of Mechanical Engineering, Politeknik Negeri Semarang, Jl. Prof. H. Soedarto S.H. Semarang, 50275, Indonesia

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Received: 20 Aug 2022; Revised: 24 Nov 2022; Accepted: 2 Jan 2023; Available online: 12 Jan 2023; Published: 15 Mar 2023.
Editor(s): H Hadiyanto
Open Access Copyright (c) 2023 The Author(s). Published by Centre of Biomass and Renewable Energy (CBIORE)
Creative Commons License This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Citation Format:
Coconut shells and waste cassava peels could be used as the main raw material for biomass briquettes for alternative energy sources in Indonesia. This study aims to analyze the quality of briquettes based on a coconut shell and cassava peel adhesive through proximate analysis with three treatment ratio variations. The ratio of coconut shell to cassava peel used varied from V1 (75%:25%), V2 (70%:30%), and V3 (65%:35%). Based on the result, the charcoal briquettes produced have a density of 0.61 gram/cm³-0.66 gram/cm³, water content of 5.51%-7.85%, ash content of 1.50%-2.86%, combustion rate of 0.021 gram/s-0.026 gram/s, and the calorific value of 6,161 cal/gram-6,266 cal/gram. However, all the treatment variations appropriate the SNI 01-6235-2000, the national standard of Indonesia for the quality of charcoal briquette, which includes the calorific value (>5,000 cal/gram), moisture content (<8%), and ash content (<8%). Briquettes with the best quality were generated by V1 with a density of 0.66 gram/cm³, water content of 5.51%, ash content of 1.50%, combustion rate of 0.026 gram/s, and calorific value of 6,266 cal/gram. Furthermore, briquette material from the coconut shell waste with natural cassava peel adhesive can be feasible as an alternative fuel.
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Keywords: Biomass; Briquettes; Cassava Peel Waste; Coconut Shell; Proximate Analysis

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