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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Welly Deglas
Politeknik Tonggak Equator
Agriculture, Biological Sciences & Forestry Engineering

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Effect of Compaction Pressure and Drying Duration on the Characteristics of Biochar Briquettes from Coconut Shell and Sugarcane Bagasse Welly Deglas; Fransiska Fransiska; Maria Krisna Evania
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 3 (2026): June 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i3.942-952

Abstract

The combination of coconut shell and sugarcane bagasse in biochar briquettes is of significant interest due to the potential for enhancing the sustainability and energy efficiency of biomass-based fuels. This study explores the unique synergy between these two widely available agricultural residues, aiming to optimize their properties for higher-quality biochar briquettes. Understanding the impact of varying drying times and pressing pressures on the physicochemical characteristics of the briquettes is essential for improving their performance as an eco-friendly energy source. The moisture content ranged from 2.21% to 15.59%, with the lowest value meeting the Indonesian National Standard (SNI ≤ 5%). Ash content exceeded the SNI limit (≤ 8%) at 9.66% after 24 hours of drying at 50 kg/cm² pressure. Volatile matter varied between 12.03% and 15.00%, with the lowest value aligning with SNI standards (10–15%). Fixed carbon content reached a maximum of 72.73%, indicating optimal carbon retention. Calorific values ranged from 4552.67 to 5941.91 cal/g, falling short of the SNI minimum (6814.11 cal/g) due to the inclusion of low-energy bagasse. The shatter index peaked at 31.00% at the lowest pressure and shortest drying time, indicating poor mechanical durability. In conclusion, briquettes processed with at least 24 h drying and 100 kg/cm² pressure yielded the best performance, meeting multiple SNI quality criteria, especially for moisture, volatile matter, and fixed carbon.
Co-Authors Fransiska Fransiska Maria Krisna Evania