Carbonized Briquettes as a Tool for Adding Value to Waste from Rain tree (<i>Samanea Saman</i>) and Coffee Ground/Tea Waste

  • Nattakarn Kansai Chulalongkorn University
  • Nichakorn Chaisuwan Chulalongkorn University
  • Nuta Supakata Chulalongkorn University

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Abstract

The purpose of this research was to study the physical, environmental, and economic characteristics of carbonized briquettes from rain tree (Samanea saman) residues and coffee ground/tea waste with cassava starch (10% wt.). There were five treatments in this experiment. As a binder, 10%wt cassava starch was added to five ratios of rain tree residues to coffee ground/tea waste: RT100:CT0, RT75:CT25, RT50:CT50, RT25:CT75, and RT0:CT100. The physical properties of the carbonized briquettes were analyzed using ASTM methods. The results showed that the carbonized briquette made from 50% rain tree (Samanea saman) residues and 50% coffee ground/tea waste (RT50:CT50) had the highest calorific value (4,820.25 ± 9.97 Kcal/kg)—not significant at the 95% confidence interval—and highest shatter index (99.16 ± 0.20%). However, all ratios of rain tree residues to coffee ground/tea waste can produce carbonized briquettes for household use with convenience for transportation. In terms of economic performance, carbonized briquettes made from 50% rain tree (Samanea saman) residues and 50% coffee ground/tea waste (RT50:CT50) achieved the optimal payback period (approximately 6 months). Thus, making carbonized briquettes from rain tree residues and coffee ground/tea waste can be an alternative method of production to add value to biomass residue for use as raw materials to produce environmentally friendly fuel products.

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Author Biographies
Nattakarn Kansai

Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

Nichakorn Chaisuwan

Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

Nuta Supakata

Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

Published
Vol 22 No 6, Dec 4, 2018
How to Cite
N. Kansai, N. Chaisuwan, and N. Supakata, “Carbonized Briquettes as a Tool for Adding Value to Waste from Rain tree (<i>Samanea Saman</i&gt;) and Coffee Ground/Tea Waste”, Eng. J., vol. 22, no. 6, pp. 47-63, Dec. 2018.

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