Preparation of Calcium Carbonate with High Purity by using Ammonium Chloride Process and Ammonium Nitrate Process
2004
Kang, M.S. (Jeollabukdo Institute of Health and Environmental Research, Jeonju, Republic of Korea) | Soh, G.S. (Gunsan City, Gunsan, Republic of Korea) | Shin, D.H. (Chonbuk National University, Jeonju, Republic of Korea)
The shells of Anadarac tegillarca granosa, Crassostrea gigas, Crassostrea nippona, and Patinopecten yessoensis were used for preparation of calcium carbonate with high purity. Calcium content in ash of Shell was the highest 64.9% in Anadarac tegillarca granosa ashed for 5 hr at 900℃, and followed as Patinopecten yessoensis 62.5%, Crassostrea gigas 62.4%, and Crassostrea nippona 61.5%. Whiteness of ash was the highest 81.6-85.8 in Patinopecten yessoensis shell.
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