​​​​​​​June 2020, Vol. 5, No. 7, pp. 182-190. 

​​​Calcium Carbonate Synthesis, Optimization and Characterization from Egg Shell

Temesgen Abeto Amibo¹*, Abreham Bekele Bayu²
¹School of Chemical Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia.
²School of Chemical Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia.

​​​*Corresponding author’s e-mail: temeabeto@gmail.com

​Abstract

​In this study, to determine the calcium carbonate availability in eggshells waste and factors those affect its extraction. The parameters like temperature, the size of the eggshell powder and the amount of solvent have highly affected the yield of calcium carbonate obtained from eggshells. The calcium carbonate was synthesized with the temperatures of 65, 100, 150, 200 and 234°C. The eggshell powder size was 29, 50, 80, 110, and 130 μm. The volume of water to mass of eggshell ratio was (ml/g) 26, 30, 35, 40 and 43. The boiling process for 30 min of eggshell kills any microbial growth on the surface. The grinding, drying and separating process was carried out for 25, 30 and 10 min respectively. The obtained results indicated that the addition of temperature led to slightly increase calcium carbonate yield when the diameter is 29 μm, the calcium carbonate yield increases highly until the temperature reaches to 150 °C for 130 μm diameter then declines and finally the calcium carbonate yield decreases as the temperature increases for the diameter of above 125 μm. The maximum yield is 54.0%, obtained at the temperature of 200°C, the diameter of 110 μm and a ratio of 40 ml/g.

Keywords: Calcium carbonate; Eggshell; Environment; Optimization; Synthesis; Yield.

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ISSN 2456-0235

International Journal of Modern Science and Technology

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