Abstract:
The aim of this research is to synthesis the Precipitated Calcium Carbonate
(PCC) from Anadara granosa cockle-sheell via carbonation method. The tested
variables were the calcination temperatures (700oC, 800oC, and 900oC) and the
ratios of between calcium oxide and nitric acid (14:300, 17:300, and 20:300
gr/m)l. The formed nitric calcium was then added by ammonia to pH 12 to start
the synthesis of calcium hydroxide followed by flowing it with the carbon dioxide
to form white precipitate (PCC). Based on the analysed, the best yield of PCC
(84.88%) was obtained at calcination temperature of 900oC with the ratio of 14
gr:300 ml. The X-Ray Diffraction (XRD) and Scanning Electron Microscopy
(SEM) characterizations revealed that the type of crystals formed was vaterit and
the shape of crystals were round (sphere-like) with a relatively uniform in size,
respectively.
