Effects of Amino Acids on Calcium Carbonate Crystallization
Investigation of Polymorphic Phase Transformation of Calcium Carbonate in the Presence of Different Additives
(Sprache: Englisch)
The calcium carbonate (CaCO3) crystals were successfully synthesized in the presence of tryptophan, glutamic acid, and threonine used as the additives at 30 °C and at a pH of 8.5. The CaCO3 crystals were prepared and analyzed using XRD, FTIR, SEM, BET, AFM,...
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The calcium carbonate (CaCO3) crystals were successfully synthesized in the presence of tryptophan, glutamic acid, and threonine used as the additives at 30 °C and at a pH of 8.5. The CaCO3 crystals were prepared and analyzed using XRD, FTIR, SEM, BET, AFM, and zeta potential analysis. Based on the characterization results, the shape of the CaCO3 crystals changed from smooth cubic calcite crystals to porous irregular spherical-like vaterite crystals with increasing tryptophan, glutamic acid, and threonine concentrations. Meanwhile, the kinetic results showed that the thermal degradation of CaCO3 followed the shrinkage geometrical spherical mechanism, R3 and the average activation energy was 224.6 kJ/mol. According to the results of the experimental design, the additive concentration was the most influential variable affecting the relative fraction of vaterite in the produced crystals. It can be concluded that tryptophan, glutamic acid, and threonine are important for better understanding and controlling the polymorph, size, and morphology of CaCO3 crystals.
Autoren-Porträt von Perviz Sayan, Sevgi Polat, Tuba Nur Özalp-Sendur
SAYAN, PervizPerviz Sayan is the Professor of Chemical Engineering at Marmara University. He is interested in separation techniques including crystallization, polymorphism, adsorption, and filtration. Sevgi Polat currently works at the University of Marmara University in Istanbul. Tuba N. Özalp is a master student in Chemical Engineering at Marmara University.
Bibliographische Angaben
- Autoren: Perviz Sayan , Sevgi Polat , Tuba Nur Özalp-Sendur
- 2021, 88 Seiten, Maße: 22 cm, Kartoniert (TB), Englisch
- Verlag: LAP Lambert Academic Publishing
- ISBN-10: 6203462659
- ISBN-13: 9786203462654
Sprache:
Englisch
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