Thesis Archive
Effect of Carbonized Rice Husk to Binder Mixture Ratio and Briquetting Temperature on the Properties of Charcoal Briquettes From Rice Husk (2013-2014)
Alyssa Marie U. Sansolis
Mako Sabrina C. Villalva
Abstract:
-“The raw materials used in this study are rice husks from Bagac, Bataan. Through charcoal briquetting, the agricultural wastes can be converted into renewable energy in the form of refuse derived fuel (RDF), a form of alternative energy that will help minimize the use of fossil fuels as a source of energy. The aim of this study is to investigate the factors that affect the production of charcoal briquettes such as the carbonized rice husk (CRH) to binder mixture ratio set as 1:1, 1:3, and 1:9, and the briquetting temperature set as 250oC, 300oC, and 350oC in terms of the density, calorific value, proximate analysis and burning rate of the charcoal briquettes. The binder mixture will have a 7% cassava starch concentration giving 50:3.5, 25:5.25 and 10:6.3 %(w/w) of CRH to cassava starch for CRH to binder mixture ratios of 1:1, 1:3, and 1:9. The rice husks were carbonized and ground to a 20-mesh size and was mixed with the binder mixture at varying ratios. The mixtures were heated at varying briquetting temperatures and then densified at 2MT using carver press. The dried samples were analyzed giving a density that ranges from 0.6865 g/cm3 to 0.7962 g/cm3. The carbonized rice husk to binder mixture ratio and briquetting temperature showed no significant effect on the density of the charcoal briquettes. The calorific value of the charcoal briquettes ranges from 10.50 MJ/kg to 12.31 MJ/kg with a 3.35% to 21.16% increase from the calorific value of the rice husks from Bagac, Bataan. The carbonized rice husk to binder mixture ratio showed a significant effect on the calorific value of the charcoal briquettes. However, the briquetting temperature showed no significant effect on the density of the charcoal briquettes. The charcoal briquettes have a proximate analysis of 5.488% to 8.497% moisture content, 6.152% to 19.037% volatile matter, 37.045% to 40.224% fixed carbon, and 35.421% to 48.297% ash content. The carbonized rice husk to binder mixture ratio and briquetting temperature showed no significant effect on the proximate analysis of the charcoal briquettes. The charcoal briquettes produced have a burning rate that ranges from 0.09695 mg/min to 0.12827 mg/min. The carbonized rice husk to binder mixture ratio and briquetting temperature showed no significant effect on the burning rate of the charcoal briquettes.”
Adviser:
Dr. Florinda T. Bacani