Comparison of Hydroxyapatite Sorption Properties Towards Cadmium, Lead, Zinc and Strontium Ions
Само за регистроване кориснике
2005
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Apatites are well known matrix for heavy metal immobilization and remediation of
ground water and contaminated soils. In this work, capacities of different synthetic hydroxyapatite
(HAP) samples for Pb, Cd, Sr and Zn sorption were analyzed, from single metal solutions and their
equimolar mixture. Initial concentration of each metal in single metal solutions and total metal
concentration in the mixture was 10-2 mol/dm3
. Initial pH was adjusted to 5.0 ± 0.1. After 24 h
equilibration of HAP samples with heavy metal solutions (solid/liquid ratio 1:200), the
concentration of metals and of Ca2+ released from crystal lattice, as well as the final pH values were
measured. The selectivity of all samples, regardless of the differences in their compositions,
crystallinities, specific surface areas, points of zero charge and sorption capacities, was as follows:
Pb > Cd > Zn > Sr. The same order was obtained for both single metal solutions and their mixture.
In all cases, the sorption w...as followed by a decrease in final pH values, which are lower than the
pHPZC values obtained by equilibration of HAP samples with an inert electrolyte (KNO3). A linear
relationship between the amount of metals sorbed and Ca2+ released from HAP was observed. Also,
a correlation between sorption capacities and physicochemical properties of HAP samples was
found.
Кључне речи:
correlation / HAP / pH(pzc) / selectivity / sorption capacitiesИзвор:
Materials Science Forum, 2005, 494, 405-410Издавач:
- Trans Tech Publications
Напомена:
- 6th Conference of the Yugoslav-Materials-Research-Society, Herceg Novi, Serbia Montenego, 13-17, 2004
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Smičiklas, Ivana AU - Onjia, Antonije AU - Marković, Jelena AU - Raičević, Slavica PY - 2005 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7233 AB - Apatites are well known matrix for heavy metal immobilization and remediation of ground water and contaminated soils. In this work, capacities of different synthetic hydroxyapatite (HAP) samples for Pb, Cd, Sr and Zn sorption were analyzed, from single metal solutions and their equimolar mixture. Initial concentration of each metal in single metal solutions and total metal concentration in the mixture was 10-2 mol/dm3 . Initial pH was adjusted to 5.0 ± 0.1. After 24 h equilibration of HAP samples with heavy metal solutions (solid/liquid ratio 1:200), the concentration of metals and of Ca2+ released from crystal lattice, as well as the final pH values were measured. The selectivity of all samples, regardless of the differences in their compositions, crystallinities, specific surface areas, points of zero charge and sorption capacities, was as follows: Pb > Cd > Zn > Sr. The same order was obtained for both single metal solutions and their mixture. In all cases, the sorption was followed by a decrease in final pH values, which are lower than the pHPZC values obtained by equilibration of HAP samples with an inert electrolyte (KNO3). A linear relationship between the amount of metals sorbed and Ca2+ released from HAP was observed. Also, a correlation between sorption capacities and physicochemical properties of HAP samples was found. PB - Trans Tech Publications T2 - Materials Science Forum T1 - Comparison of Hydroxyapatite Sorption Properties Towards Cadmium, Lead, Zinc and Strontium Ions EP - 410 SP - 405 VL - 494 DO - 10.4028/www.scientific.net/MSF.494.405 ER -
@article{ author = "Smičiklas, Ivana and Onjia, Antonije and Marković, Jelena and Raičević, Slavica", year = "2005", abstract = "Apatites are well known matrix for heavy metal immobilization and remediation of ground water and contaminated soils. In this work, capacities of different synthetic hydroxyapatite (HAP) samples for Pb, Cd, Sr and Zn sorption were analyzed, from single metal solutions and their equimolar mixture. Initial concentration of each metal in single metal solutions and total metal concentration in the mixture was 10-2 mol/dm3 . Initial pH was adjusted to 5.0 ± 0.1. After 24 h equilibration of HAP samples with heavy metal solutions (solid/liquid ratio 1:200), the concentration of metals and of Ca2+ released from crystal lattice, as well as the final pH values were measured. The selectivity of all samples, regardless of the differences in their compositions, crystallinities, specific surface areas, points of zero charge and sorption capacities, was as follows: Pb > Cd > Zn > Sr. The same order was obtained for both single metal solutions and their mixture. In all cases, the sorption was followed by a decrease in final pH values, which are lower than the pHPZC values obtained by equilibration of HAP samples with an inert electrolyte (KNO3). A linear relationship between the amount of metals sorbed and Ca2+ released from HAP was observed. Also, a correlation between sorption capacities and physicochemical properties of HAP samples was found.", publisher = "Trans Tech Publications", journal = "Materials Science Forum", title = "Comparison of Hydroxyapatite Sorption Properties Towards Cadmium, Lead, Zinc and Strontium Ions", pages = "410-405", volume = "494", doi = "10.4028/www.scientific.net/MSF.494.405" }
Smičiklas, I., Onjia, A., Marković, J.,& Raičević, S.. (2005). Comparison of Hydroxyapatite Sorption Properties Towards Cadmium, Lead, Zinc and Strontium Ions. in Materials Science Forum Trans Tech Publications., 494, 405-410. https://doi.org/10.4028/www.scientific.net/MSF.494.405
Smičiklas I, Onjia A, Marković J, Raičević S. Comparison of Hydroxyapatite Sorption Properties Towards Cadmium, Lead, Zinc and Strontium Ions. in Materials Science Forum. 2005;494:405-410. doi:10.4028/www.scientific.net/MSF.494.405 .
Smičiklas, Ivana, Onjia, Antonije, Marković, Jelena, Raičević, Slavica, "Comparison of Hydroxyapatite Sorption Properties Towards Cadmium, Lead, Zinc and Strontium Ions" in Materials Science Forum, 494 (2005):405-410, https://doi.org/10.4028/www.scientific.net/MSF.494.405 . .