The point of zero charge and sorption of cadmium (II) and strontium (II) ions on synthetic hydroxyapatite
Апстракт
Surface properties of synthetic well-crystallized hydroxyapatite were investigated. Points of zero charge (pH(PZC)) for different solid to solution ratios were determined by the batch equilibration technique, using KNO3 as a background electrolyte. It has been found that the decrease in solid to solution ratio from 1:100 to 1:500 leads to a decrease in pH(PZC) from 6.1 to 4.1, respectively. Sorption of Cd2+ ions is not influenced by the initial pH value in the investigated range (5-7), while sorption of Sr2+ -ions, determined in the wider pH range (4.5-11.5), depends only on the initial pH higher than 10, i.e. final pH values higher than 4.5. Negative surface charge established when pH of the solution is higher than pH,, leads to a more effective cation sorption. (C) 2000 Elsevier Science B.V. All rights reserved.
Кључне речи:
hydroxyapatite / point of zero charge / sorption / Cd2+- and Sr2+-ionsИзвор:
Separation and Purification Technology, 2000, 18, 3, 185-194
DOI: 10.1016/S1383-5866(99)00066-0
ISSN: 1383-5866
WoS: 000086886800004
Scopus: 2-s2.0-0038185430
Колекције
Институција/група
VinčaTY - JOUR AU - Smičiklas, Ivana D. AU - Milonjić, Slobodan K. AU - Pfendt, P AU - Raičević, Slavica PY - 2000 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2343 AB - Surface properties of synthetic well-crystallized hydroxyapatite were investigated. Points of zero charge (pH(PZC)) for different solid to solution ratios were determined by the batch equilibration technique, using KNO3 as a background electrolyte. It has been found that the decrease in solid to solution ratio from 1:100 to 1:500 leads to a decrease in pH(PZC) from 6.1 to 4.1, respectively. Sorption of Cd2+ ions is not influenced by the initial pH value in the investigated range (5-7), while sorption of Sr2+ -ions, determined in the wider pH range (4.5-11.5), depends only on the initial pH higher than 10, i.e. final pH values higher than 4.5. Negative surface charge established when pH of the solution is higher than pH,, leads to a more effective cation sorption. (C) 2000 Elsevier Science B.V. All rights reserved. T2 - Separation and Purification Technology T1 - The point of zero charge and sorption of cadmium (II) and strontium (II) ions on synthetic hydroxyapatite VL - 18 IS - 3 SP - 185 EP - 194 DO - 10.1016/S1383-5866(99)00066-0 ER -
@article{ author = "Smičiklas, Ivana D. and Milonjić, Slobodan K. and Pfendt, P and Raičević, Slavica", year = "2000", abstract = "Surface properties of synthetic well-crystallized hydroxyapatite were investigated. Points of zero charge (pH(PZC)) for different solid to solution ratios were determined by the batch equilibration technique, using KNO3 as a background electrolyte. It has been found that the decrease in solid to solution ratio from 1:100 to 1:500 leads to a decrease in pH(PZC) from 6.1 to 4.1, respectively. Sorption of Cd2+ ions is not influenced by the initial pH value in the investigated range (5-7), while sorption of Sr2+ -ions, determined in the wider pH range (4.5-11.5), depends only on the initial pH higher than 10, i.e. final pH values higher than 4.5. Negative surface charge established when pH of the solution is higher than pH,, leads to a more effective cation sorption. (C) 2000 Elsevier Science B.V. All rights reserved.", journal = "Separation and Purification Technology", title = "The point of zero charge and sorption of cadmium (II) and strontium (II) ions on synthetic hydroxyapatite", volume = "18", number = "3", pages = "185-194", doi = "10.1016/S1383-5866(99)00066-0" }
Smičiklas, I. D., Milonjić, S. K., Pfendt, P.,& Raičević, S.. (2000). The point of zero charge and sorption of cadmium (II) and strontium (II) ions on synthetic hydroxyapatite. in Separation and Purification Technology, 18(3), 185-194. https://doi.org/10.1016/S1383-5866(99)00066-0
Smičiklas ID, Milonjić SK, Pfendt P, Raičević S. The point of zero charge and sorption of cadmium (II) and strontium (II) ions on synthetic hydroxyapatite. in Separation and Purification Technology. 2000;18(3):185-194. doi:10.1016/S1383-5866(99)00066-0 .
Smičiklas, Ivana D., Milonjić, Slobodan K., Pfendt, P, Raičević, Slavica, "The point of zero charge and sorption of cadmium (II) and strontium (II) ions on synthetic hydroxyapatite" in Separation and Purification Technology, 18, no. 3 (2000):185-194, https://doi.org/10.1016/S1383-5866(99)00066-0 . .