Hasibuan, R., Setiawan, A. and Faisal, F. 2024. Utilization of Syngas as Co-firing Fuel for Carbonization of Arabica Coffee Pulp. Journal of Engineering and Technological Sciences. 56, 6 (Dec. 2024), 771–780. DOI:https://doi.org/10.5614/j.eng.technol.sci.2024.56.6.8.