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The effect of CO gas flow rate on precipitated CaCO formed at room temperature

AIP Conference Proceedings, ISSN: 1551-7616, Vol: 2014
2018
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  • Citations
    5
    • Citation Indexes
      5
  • Captures
    24

Conference Paper Description

Synthesis of precipitated CaCO from limestone Blumbungan, Madura island (East Java, Indonesia) using carbonation process have been done. The carbonation process is carried out with variations of the CO gas flow rate of 1.175, 2.35, 3.525 and 4.7 l/min at room temperature. The crystalline phase formed was characterized by X-ray diffraction (XRD) X-Pert MPD with Cu-K radiation (λ = 1,5406) and scanned from 10°to 60°. The morphological investigation was analyzed by Scanning Electron microscope (SEM) FEI Inspect S50 X'pertPRO PANalytical. Crystal size was analyzed using the Scherrer equation. The XRD test results show that the phases formed at CO gas flow rates 1.175, 2.35, and 3.525 l/min are vaterite and calcite, while at 4.7l/min only calcite phase is formed. Variations in CO gas flow rate affect the percentage of calcite and vaterite formed. The crystal size of precipitated CaCO the Scherrer equation ranged from 55,572 - 81,290 nm. The morphology of precipitated CaCO is mix rhombohedral cubic and needle-like.

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