Eggshell Derived Calcium Phosphate and Its Conversion to Dense Bodies
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume 65, No. 2, January 2020, Pages 334-341
Toibah Abd. Rahim1,*, Fatimah Misran1, Zaleha Mustafa1, Zurina Shamsudin1
1 Fakulti Kejuruteraan Pembuatan, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
*Corresponding author: firstname.lastname@example.org
Eggshell; Calcium phosphate; Hydroxyapatite; ?-Tricalcium phosphate; Sintering
Since eggshell waste is one of the many contributors to food waste in Malaysia, recycling activities and proper waste management can help reduce the amount of eggshell waste. The present study discusses the synthesis method of eggshell derived calcium phosphate utilizing recycled eggshell as the calcium precursor and di-ammonium hydrogen phosphate ((NH4)2HPO4) as the phosphate precursor by a simple hydrothermal reaction when the pH of the solution was adjusted at 9. A rod-like nanostructure of CaP which contains only HA phase was produced following heat treatment at 400 °C using the CaO produced from the recycled eggshell. The effect of sintering temperature ranging between 900 °C and 1250 °C on the dense bodies using the resulting CaP powder was also studied. It was found that the HA phase in the resulting CaP powder was mostly transformed to ?-TCP with a trace amount of the HA phase following the sintering process. The increase of sintering temperatures subsequently increased the hardness and density of the sintered bodies. Further, SEM observations showed the formation of denser microstructures by effective pore removal at the higher sintering temperature.
CITE THIS ARTICLE
Toibah, Abd. Rahim, et al. “Eggshell Derived Calcium Phosphate and Its Conversion to Dense Bodies.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 65.2 (2020): 334-341.
Toibah, A. R., Fatimah, M., Zaleha, M., & Zurina, S.(2020). Eggshell Derived Calcium Phosphate and Its Conversion to Dense Bodies. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 65(2), 334-341.
Toibah Abd. Rahim, Fatimah Misran, Zaleha Mustafa, and Zurina Shamsudin. “Eggshell Derived Calcium Phosphate and Its Conversion to Dense Bodies.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 65, no. 2 (2020): 334-341.
Toibah, A.R., Fatimah, M., Zaleha, M., and Zurina, S., 2020. Eggshell Derived Calcium Phosphate and Its Conversion to Dense Bodies. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 65(2), pp. 334-341.
Toibah AR, Fatimah M, Zaleha M, Zurina S. Eggshell Derived Calcium Phosphate and Its Conversion to Dense Bodies. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 2020;65(2): 334-341.
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