In this paper the results of examination of the dissolution process of the polyphosphate glass 45P2O5×25K2O×15CaO×10MgO×3SiO2×ZnO×MnO [mol%] in 2% citric acid at temperatures of 15, 20 and 30 ºC were presented. The dissolution experiments were performed on glass powder grain size of 0.1-0.3 mm and 0.3-0.65 mm. The mass loss of glass, normalized concentration of PO43+ and K+ ions and the conductivity of solution (χ) as a function of leaching time was determined. It was revealed that for short reaction times, the changes of normalized mass loss (fm) are linear with time and the rates of glass dissolution under given conditions are highest. By increasing the dissolution time the dissolution rate of glass decreased. The initial release rates r0 (PO43-) = 3.550 [g/m2h] and r0 (K+) = 2.133 [g/m2h] at t = 300C were calculated for glass powder sample 0.3-0.65mm. The dissolution process in citric acid is complex and can be explained by hydration reaction and hydrolysis, leading to the disruptio...n of phosphate chains which form the structure of glass. The results of the dissolution experiments indicated that this glass can be used as an eco- fertilizer in soil remediation
TY - CONF
AU - Nikolić, Jelena
AU - Živanović, Vladimir
AU - Matijašević, Srđan
AU - Zildžović, Snežana
AU - Grujić, Snežana
AU - Smiljanić, Sonja
PY - 2015
UR - https://ritnms.itnms.ac.rs/handle/123456789/744
AB - In this paper the results of examination of the dissolution process of the polyphosphate glass 45P2O5×25K2O×15CaO×10MgO×3SiO2×ZnO×MnO [mol%] in 2% citric acid at temperatures of 15, 20 and 30 ºC were presented. The dissolution experiments were performed on glass powder grain size of 0.1-0.3 mm and 0.3-0.65 mm. The mass loss of glass, normalized concentration of PO43+ and K+ ions and the conductivity of solution (χ) as a function of leaching time was determined. It was revealed that for short reaction times, the changes of normalized mass loss (fm) are linear with time and the rates of glass dissolution under given conditions are highest. By increasing the dissolution time the dissolution rate of glass decreased. The initial release rates r0 (PO43-) = 3.550 [g/m2h] and r0 (K+) = 2.133 [g/m2h] at t = 300C were calculated for glass powder sample 0.3-0.65mm. The dissolution process in citric acid is complex and can be explained by hydration reaction and hydrolysis, leading to the disruption of phosphate chains which form the structure of glass. The results of the dissolution experiments indicated that this glass can be used as an eco- fertilizer in soil remediation
PB - Bor : Mining and Metallurgy Institute Bor
PB - Belgrade : Academy of Engineering Science of Serbia
PB - University of Belgrade
C3 - XVI Balkan mineral processing congress
T1 - Eco-materials for soil remediation based on polyphosphate glasses
EP - 1011
SP - 1007
VL - 2
ER -
@conference{
author = "Nikolić, Jelena and Živanović, Vladimir and Matijašević, Srđan and Zildžović, Snežana and Grujić, Snežana and Smiljanić, Sonja",
year = "2015",
abstract = "In this paper the results of examination of the dissolution process of the polyphosphate glass 45P2O5×25K2O×15CaO×10MgO×3SiO2×ZnO×MnO [mol%] in 2% citric acid at temperatures of 15, 20 and 30 ºC were presented. The dissolution experiments were performed on glass powder grain size of 0.1-0.3 mm and 0.3-0.65 mm. The mass loss of glass, normalized concentration of PO43+ and K+ ions and the conductivity of solution (χ) as a function of leaching time was determined. It was revealed that for short reaction times, the changes of normalized mass loss (fm) are linear with time and the rates of glass dissolution under given conditions are highest. By increasing the dissolution time the dissolution rate of glass decreased. The initial release rates r0 (PO43-) = 3.550 [g/m2h] and r0 (K+) = 2.133 [g/m2h] at t = 300C were calculated for glass powder sample 0.3-0.65mm. The dissolution process in citric acid is complex and can be explained by hydration reaction and hydrolysis, leading to the disruption of phosphate chains which form the structure of glass. The results of the dissolution experiments indicated that this glass can be used as an eco- fertilizer in soil remediation",
publisher = "Bor : Mining and Metallurgy Institute Bor, Belgrade : Academy of Engineering Science of Serbia, University of Belgrade",
journal = "XVI Balkan mineral processing congress",
title = "Eco-materials for soil remediation based on polyphosphate glasses",
pages = "1011-1007",
volume = "2"
}
Nikolić, J., Živanović, V., Matijašević, S., Zildžović, S., Grujić, S.,& Smiljanić, S.. (2015). Eco-materials for soil remediation based on polyphosphate glasses. in XVI Balkan mineral processing congress
Bor : Mining and Metallurgy Institute Bor., 2, 1007-1011.
Nikolić J, Živanović V, Matijašević S, Zildžović S, Grujić S, Smiljanić S. Eco-materials for soil remediation based on polyphosphate glasses. in XVI Balkan mineral processing congress. 2015;2:1007-1011..
Nikolić, Jelena, Živanović, Vladimir, Matijašević, Srđan, Zildžović, Snežana, Grujić, Snežana, Smiljanić, Sonja, "Eco-materials for soil remediation based on polyphosphate glasses" in XVI Balkan mineral processing congress, 2 (2015):1007-1011.
