Phase Change of Calcium Carbonate by Adding Polymers
- Authors
- Han, Hyun-Kak; Jeon, Je-Sung; Kim, Mi-Sun
- Issue Date
- Apr-2012
- Publisher
- 한국화학공학회
- Keywords
- Calcium Carbonate; Calcite; Aragonite; Additive
- Citation
- Korean Chemical Engineering Research(HWAHAK KONGHAK), v.50, no.2, pp 300 - 303
- Pages
- 4
- Journal Title
- Korean Chemical Engineering Research(HWAHAK KONGHAK)
- Volume
- 50
- Number
- 2
- Start Page
- 300
- End Page
- 303
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/15293
- ISSN
- 0304-128X
2233-9558
- Abstract
- Phase change of calcium carbontae crystals in crystallization of precipitated calcium carbonate was researched by adding additives such as ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), citric acid (CIT) and pyromellitic amid (PMA). At low temperature 20 degrees C, calcite crystal was made. At high temperature 80 degrees C, aragonite crystal was made without additives. At middle temperature 40 degrees C and 60 degrees C, Aragonite crystal also made by adding EDTA, DTPA. The crystal growth of Aragonite was retarded by the presence of CIT, PMA and the single phase of calcite was made. It was found that additives were important factors to make the single phase of calcium carbonate.
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Collections - College of Engineering > Department of Chemical Engineering > 1. Journal Articles
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