—Some residues from industries and households were used to turn into briquettes. In this research, waste paper and coffee residues could be practically used to produce fuel briquettes by adding starch as a binder before performing a molding cold process. The optimal ratios between waste paper and coffee residue were considered to be 70:30, 60:40, 50:50, 40:60, and 30:70.Their calorific values ranged from 3,708.5 to 4,347.1 cal/g. These values were almost equivalent to the amount of the heat from the firewood. The study also discovered that the briquettes rendered their moisture content (7-9%), the amount of ash (3.8-8.5%), and the amounts of fuel elements (45.56% carbon, 6.48% hydrogen, 45.41% oxygen, 0.75% nitrogen, and 0.08% sulfur) within the acceptable values of biomass standards. The briquettes were readily molded, not easily shattered, and inflammable with low amount of smoke and odor. Therefore, the production of fuel briquettes from waste paper and coffee residue could be one of the viable alternatives for community energy generation.
—Coffee residue, fuel briquettes, waste paper.
P. Patcharee and T. Naruephat are with the Srinakharinwirot University (e-mail: firstname.lastname@example.org, email@example.com).
Cite:P. Patcharee and T. Naruephat, "A Study on How to Utilize Waste Paper and Coffee Residue for Briquettes Production," International Journal of Environmental Science and Development vol. 6, no. 3, pp. 201-204, 2015.