Properties of Macadamia Shell Charcoal Prepared by a Small Artificial Furnace

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ปิยรัตน์ มูลศรี


The objective of this research was to study the properties of macadamia shell charcoal prepared in a small artificial furnace. The macadamia shell was agricultural sector waste. The constituents of macadamia shell were cellulose, hemicellulose, lignin and ash in the proportions of 28.9%, 30.5%, 40.3%, and 0.3% by weight, respectively. After the carbonization of 3 kilograms of macadamia shell using a 54 liter-artificial furnace with the highest sintering temperature in the range of 400-500 °C for less than 3 hours, a good quality macadamia charcoal with a shiny surface was obtained with a moderated yield of 40.7%. The macadamia charcoal hadanelectrical conductivity ability. It had a bulk density of 0.46 g cm-3, and had an iodine absorption coefficient value of 374.7 mg g-1. The approximate analysis showed that the quantities of fixed carbon, ash, moisture, and volatile matters were in the proportionsof 83.2%, 6.3%, 4.3%, and 6.2% by weight, respectively. In addition, the high heating value (HHV) of the macadamia shell charcoal when analyzed by a bomb calorimeter was 17.68 MJ kg-1 (or 4,223 kcal kg-1).


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มูลศรี ป. (2021). Properties of Macadamia Shell Charcoal Prepared by a Small Artificial Furnace. Journal of Vocational Institute of Agriculture, 5(1), 28–39. Retrieved from
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Mereles, L. G., Ferro, E. A., Alvarenga, N. L., Caballero, S. B., Wiszovaty, L. N., Piris, P. A., and Michajluk, B. J. (2017). Chemical composition of Macadamia integrifolia (Maiden and Betche) nuts from Paraguay. International Food Research Journal, 24(6), 2599-2608.

Wechsler, A., Zaharia, M., Crosky, A., Jones, H., Ramirez, M., Ballerini, A., Nunez, M., and Sahajwalla, V. (2013). Macadamia (Macadamia integrifolia) shell and castor (Ricinos communis) oil based sustainable particleboard: A comparison of its properties with conventional wood based particleboard. Materials and Design, 50, 117-123.

Wang, C-H., Zhang, L., Mai, Y-W. (1995). Deformation and fracture of Macadamia nuts Part1: Deformation analysis of nut-in-shell. International Journal of Fracture, 69, 14.

Daya Ram Nhuchhen and Abdul Salam, P. (2012). Estimation of higher heating value of biomass from proximate analysis: A new approach. Fuel, 99, 55-63.

Schuler, P., Speck, T., Buhrig-Polaczek, A., and Fleck, C. (2014). Structure-function relationships in Macadamia integrifolia seed coats-fundamentals of the Hierarchical microstructure. PLOS ONE, 9(8), 1-14.

Moonsri, P., and Hutem, A. (2018). Biomass-briquettes fuel from local wisdom for producer gas production. Kasem Bundit Engineering Journal, 8 (special issue), 286-295.

Teeta, S., Nachaisin, M., Wanish, S. (2017). Thermal properties of green fuel briquettes from residue corncobs materials mixed macadamia shell charcoal powder. Journal of Physics, Conf. Series 901, 012042.

Fan, F., Yang, Z. Li, H., Shi, Z., and Kan, H. (2018). Preparation and properties of hydrochars from macadamia nut shell via hydrothermal carbonization. Royal society open science, 5, 1-10.

Dejang, N., Somprasit, O., and Chindaruksa, S. (2015). A preparation of activated carbon from macadamia shell by microwave irradiation activation. Energy Procedia, 79, 727-732.

Ahmadpour, A. and Do, D. D. (1997). The preparation of activated carbon from macadamia nut shell by chemical activation. Carbon, 35(12), 1723-1732.

Technical Association of the Pulp and Paper Industry. (1999). Alpha, beta and gamma cellolose in pulp. Tappi Rule T203 om-88. Atlanta, GA.

Browing, B. L. (1963). Chlorite Holocellulose. Handbook of Wood Chemistry and Wood Composite. New York, Interscience Publishers.

Technical Association of the Pulp and Paper Industry. (2002). Test method T 222 om-02 acid-insoluble lignin in wood and pulp. Atlanta, GA.

Technical Association of the Pulp and Paper Industry. (2002). Test method T211 om-02 ash in wood, pulp, paper and paperboard. Atlanta, GA.

Moonsri, P., Pongpian, W., Moonsri, K. (2016). Production of activated carbon from moldy damaged tamarind pod. Applied Mechanics and Materials, 885, 137-142.

Han, JS., and Rowel, JS. (1996). Chemical composition of fibers. Boca Raton (FL): CRC Press.