Acosta, Clayvon D.Mamaradlo, Daryll C.Mangoba, Joshua C.Pimentel, Kyle Anthony A.Quinzon, Bennie N.2026-10-242026-10-242026Acosta, C. D., Mamaradlo, D. C., Mangoba, J. C., Pimentel, K. A A., & Quinzon, B. N. (2026). Development of a compact charcoal briquetting machine from carbonized rice husk. [Unpublished Undergraduate Thesis]. Don Mariano Marcos Memorial State University – Mid La Union Campus, City of San Fernando, La Union. Lakasa ti Sirib, DMMMSU Institutional Repository.https://lakasa.dmmmsu.edu.ph/handle/123456789/2848Abstract onlyThis study developed a compact charcoal briquetting machine using carbonized rice husk as a sustainable biomass resource. It aimed to design, fabricate, and evaluate the machine’s performance in terms of production rate, efficiency, briquette quality, and economic viability using a project developmental and experimental approach. The machine, measuring 24.5" × 22" × 34", is powered by a 1 hp motor with a 100:1 gearbox for effective biomass compression. Results showed a production rate of 9 briquettes per 16.364 minutes and an efficiency of 88.52%, indicating reliable operation. The briquettes produced had acceptable fuel properties, with 26.112% moisture content, 9.41% volatile matter, 1.46% ash content, and 63.02% fixed carbon. Economic analysis revealed feasibility, with a break-even point at four units, a payback period of eight months, and a benefit–cost ratio of 1.5. Overall, the machine is technically effective and economically viable for small- to medium-scale use, providing an environmentally friendly solution for converting rice husk waste into fuel.enThesis