A Study on the Synthesis of Calcium Lactate Using Precipitated Calcium Carbonate

침강성 탄산칼슘을 이용한 젖산칼슘 합성에 관한 연구

  • Park, Joo-Won (Department of Chemical Engineering, Kwangwoon University) ;
  • Cho, Kye-Hong (Department of Chemical Engineering, Kwangwoon University) ;
  • Park, Jin-Koo (Korea Institute of Limestone & Advanced Materials) ;
  • Ahn, Ji-Whan (Minerals and Materials Processing Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Han, Choon (Department of Chemical Engineering, Kwangwoon University)
  • 박주원 (광운대학교 화학공학과) ;
  • 조계홍 (광운대학교 화학공학과) ;
  • 박진구 (한국석회석신소재연구소) ;
  • 안지환 (한국지질자원연구원 자원활용연구부) ;
  • 한춘 (광운대학교 화학공학과)
  • Received : 2007.11.23
  • Accepted : 2008.01.16
  • Published : 2008.04.10

Abstract

Calcium lactate was prepared by reacting lactic acid with precipitated calcium carbonate (PCC) which was prepared by carbonation process (calcite) and solution process (aragonite). Effects of PCC morphology (calcite and aragonite) on calcium lactate by the solution process were investigated experimentally. Despite the slow forming rate at the initial stage, the final yield of calcium lactate appeared higher when calcite was used. Therefore, the maximum yield of calcium lactate using aragonite was 85.0% and that using calcite was 88.7%, respectively. For both cases, the optimum temperature for the preparation appeared at around $60^{\circ}C$. Furthermore, the increase in lactic acid concentration over 2.0 mol% increased slurry viscosity and deteriorated mass transfer, which resulted in low yield of calcium lactate for both cases. SEM analyses showed that the prepared calcium lactate appeared as plate-like crystal form, irrespective of PCC morphologies, reaction temperatures, and concentrations of lactic acid.

Acknowledgement

Supported by : 에너지관리공단, 광운대학교

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