<abstract xmlns="http://www.w3.org/1999/xhtml">One of the most effective methods for the immobilization of toxic metals involves the use of minerals from the apatite supergroup. The formation of cadmium chlorapatite may lead to successful entrapping of cadmium; thus, it is important to examine the solubility constant to determine the stability of cadmium in the the apatite structure. Cadmium chlorapatite was synthetized and characterized by X-ray diffraction, infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy. The solubility constant (log) Ksp of cadmium chlorapatite was -65.58. The Gibbs free energy of formation of cadmium chlorapatite reached -3950.48 kJ mol−1. The solubility constant turned out to be low but was enough for cadmium chlorapatiteto be considered a very stable compound..</abstract>

One of the most effective methods for the immobilization of toxic metals involves the use of minerals from the apatite supergroup. The formation of cadmium chlorapatite may lead to successful entrapping of cadmium; thus, it is important to examine the solubility constant to determine the stability of cadmium in the the apatite structure. Cadmium chlorapatite was synthetized and characterized by X-ray diffraction, infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy. The solubility constant (log) Ksp of cadmium chlorapatite was -65.58. The Gibbs free energy of formation of cadmium chlorapatite reached -3950.48 kJ mol−1. The solubility constant turned out to be low but was enough for cadmium chlorapatiteto be considered a very stable compound..

Synthesis and characterization of cadmium chlorapatite Cd5(PO4)3Cl

Mineralogia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Synthesis and characterization of cadmium chlorapatite Cd(PO)Cl

One of the most effective methods for the immobilization of toxic metals involves the use of minerals from the apatite supergroup. The formation of cadmium...

Synthesis and characterization of cadmium chlorapatite Cd₅(PO₄)₃Cl

Published Online: Apr 03, 2020

Page range: 3 - 12

Received: Sep 25, 2018

Accepted: Jun 06, 2019

DOI: https://doi.org/10.2478/mipo-2019-0001

Keywords
Apatite, Cadmium, Cadmium chloroapatite, Dissolution, Solubility constant

© 2019 Magdalena Wołowiec et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Synthesis and characterization of cadmium chlorapatite Cd5(PO4)3Cl

Published Online: Apr 03, 2020

Page range: 3 - 12

Received: Sep 25, 2018

Accepted: Jun 06, 2019

DOI: https://doi.org/10.2478/mipo-2019-0001

KeywordsApatite, Cadmium, Cadmium chloroapatite, Dissolution, Solubility constant

© 2019 Magdalena Wołowiec et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Synthesis and characterization of cadmium chlorapatite Cd₅(PO₄)₃Cl

Keywords
Apatite, Cadmium, Cadmium chloroapatite, Dissolution, Solubility constant