Characterization of Precipitated Calcium Carbonate from Eggshell Powder

Abstract:

In this work, PCC was prepared from chicken eggshell powder (ESP) by dissolving 100 g ESP in 1 M hydrochloric acid at room temperature. Under vigorous stirring, PCC was precipitated from the ESP-dissolved solution using 1 M sodium carbonate solution. The dried PESP (precipitated eggshell powder) was then characterized by particle size analyzer, X-ray diffractometer, Brunauer-Emmett-Teller surface analyzer and thermogravimetric analyzer. The particle shape of the PESP was revealed using scanning electron microscope. It was found that PESP was a binary mixer of calcite and vaterite. The particles were in cubic and spherical shape. In addition, PESP had a volume average diameter of 8.16 μm, D[V, 0.5] of 7.22 μm, D[V,0.9] of 16.57 μm, and the specific surface area of 4.38 m²/g. The average particle size was lower than and the specific surface area was higher than that of ESP. The decomposition process of PESP occured in a single step between 610 and 770 °C, with 44.43% weight loss.

• Periodical: Advanced Materials Research (Volume 410)
• Pages: 228-231
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.410.228
• Online since: November 2011
• Authors: Wimonlak Sutapun, Yupaporn Ruksakulpiwat, Nitinat Suppakarn, Rachasit Jeencham, Ajcharaporn Aontee
• Keywords: Calcium Carbonate, Eggshell, ESP, PCC

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