Dissolution  of polyphosphate glass: Impact of pH on diffusion coefficients of modifying cations at low temperatures

Nikolić, Jelena; Topalović, Vladimir; Đošić, Marija; Savić, Veljko; Obradović, Milena; Matijašević, Srđan; Grujić, Snežana

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Abstract

This paper shows the dissolution behavior of polyphosphate glass in demineralized water and 2% citric acid solution at temperatures: 15, 20, 30, 37 and 50 °C. The influence of the solvent type on the diffusion coefficients of the modifying cations, under static conditions, is also presented. The diffusion coefficients, determined from concentration profiles of the modifying cations, are calculated to be in the range of 0.27 to 350x10-14 m2/h for dissolution in demineralized water, and in the range of 3.6 to 148x10-12 m2/h for the dissolution in 2% citric acid solution. The values of activation energy of cations diffusion in demineralized water are in the range from 68.32 to 105.41 kJ/mol, while for 2% citric acid solution they are in the range from 39.28 to 55.34 kJ/mol.

Keywords:

polyphosphate glass / diffusion coefficient / dissolution

Source:
5th Metallurgical & Materials Engineering Congress of South-East Europe, 2023, 231-236

Publisher:

Belgrade : Association of Metallurgical Engineers of Serbia

Funding / projects:

ISBN: 978-86-87183-32-2

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URI

https://ritnms.itnms.ac.rs/handle/123456789/792

Collections

Radovi istraživača / Researchers’ publications

Institution/Community

Institut za tehnologiju nuklearnih i drugih mineralnih sirovina

TY  - CONF
AU  - Nikolić, Jelena
AU  - Topalović, Vladimir
AU  - Đošić, Marija
AU  - Savić, Veljko
AU  - Obradović, Milena
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/792
AB  - This paper shows the dissolution behavior of polyphosphate glass in demineralized water and 2% citric acid solution at temperatures: 15, 20, 30, 37 and 50 °C. The influence of the solvent type on the diffusion coefficients of the modifying cations, under static conditions, is also presented. The diffusion coefficients, determined from concentration profiles of the modifying cations, are calculated to be in the range of 0.27 to 350x10-14 m2/h for dissolution in demineralized water, and in the range of 3.6 to 148x10-12 m2/h for the dissolution in 2% citric acid solution. The values of activation energy of cations diffusion in demineralized water are in the range from 68.32 to 105.41 kJ/mol, while for 2% citric acid solution they are in the range from 39.28 to 55.34 kJ/mol.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe
T1  - Dissolution  of polyphosphate glass: Impact of pH on diffusion coefficients of modifying cations at low temperatures
EP  - 236
SP  - 231
ER  -

@conference{
author = "Nikolić, Jelena and Topalović, Vladimir and Đošić, Marija and Savić, Veljko and Obradović, Milena and Matijašević, Srđan and Grujić, Snežana",
year = "2023",
abstract = "This paper shows the dissolution behavior of polyphosphate glass in demineralized water and 2% citric acid solution at temperatures: 15, 20, 30, 37 and 50 °C. The influence of the solvent type on the diffusion coefficients of the modifying cations, under static conditions, is also presented. The diffusion coefficients, determined from concentration profiles of the modifying cations, are calculated to be in the range of 0.27 to 350x10-14 m2/h for dissolution in demineralized water, and in the range of 3.6 to 148x10-12 m2/h for the dissolution in 2% citric acid solution. The values of activation energy of cations diffusion in demineralized water are in the range from 68.32 to 105.41 kJ/mol, while for 2% citric acid solution they are in the range from 39.28 to 55.34 kJ/mol.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe",
title = "Dissolution  of polyphosphate glass: Impact of pH on diffusion coefficients of modifying cations at low temperatures",
pages = "236-231"
}

Nikolić, J., Topalović, V., Đošić, M., Savić, V., Obradović, M., Matijašević, S.,& Grujić, S.. (2023). Dissolution  of polyphosphate glass: Impact of pH on diffusion coefficients of modifying cations at low temperatures. in 5th Metallurgical & Materials Engineering Congress of South-East Europe
Belgrade : Association of Metallurgical Engineers of Serbia., 231-236.

Nikolić J, Topalović V, Đošić M, Savić V, Obradović M, Matijašević S, Grujić S. Dissolution  of polyphosphate glass: Impact of pH on diffusion coefficients of modifying cations at low temperatures. in 5th Metallurgical & Materials Engineering Congress of South-East Europe. 2023;:231-236..

Nikolić, Jelena, Topalović, Vladimir, Đošić, Marija, Savić, Veljko, Obradović, Milena, Matijašević, Srđan, Grujić, Snežana, "Dissolution  of polyphosphate glass: Impact of pH on diffusion coefficients of modifying cations at low temperatures" in 5th Metallurgical & Materials Engineering Congress of South-East Europe (2023):231-236.