Removal of Co2+ from aqueous solutions by hydroxyapatite
Апстракт
A study on the removal of cobalt ions from aqueous solutions by synthetic hydroxyapatite was conducted in batch conditions. The influence of different sorption parameters, such as: initial metal concentration, equilibration time, solution pH and presence of EDTA on the amount of Co2+, sorbed was studied and discussed. The sorption process followed pseudo-second-order kinetics with necessary time of 24h to reach equilibrium. Cobalt uptake was quantitatively evaluated using the Langmuir and Dubinin-Kaganer-Radushkevich (DKR) model. The Langmuir adsorption isotherm constant corresponding to adsorption capacity, Xm, was found to be 20.92 mg/g. Sorption of Co2+, is constant in the initial pH range 4-8, because HAP surface buffers these solutions to the constant final pH value of 5.1. In the presence of EDTA, sorption of Co2+ decreases due to formation of complex with lower sorption affinities. Cobalt desorption depends on the composition of the extracting solution. The desorbed amount of co...balt decreased continuously with increasing pH, and increased with increasing Ca2+ concentration in leaching solution. (c) 2006 Elsevier Ltd. All rights reserved.
Кључне речи:
hydroxyapatite / cobalt removal / equilibrium isotherm / kinetics / pH / desorptionИзвор:
Water Research, 2006, 40, 12, 2267-2274
DOI: 10.1016/j.watres.2006.04.031
ISSN: 0043-1354
PubMed: 16766010
WoS: 000239196200003
Scopus: 2-s2.0-33745208489
Колекције
Институција/група
VinčaTY - JOUR AU - Smičiklas, Ivana D. AU - Dimović, Slavko AU - Plećaš, Ilija B. AU - Mitrić, Miodrag PY - 2006 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3046 AB - A study on the removal of cobalt ions from aqueous solutions by synthetic hydroxyapatite was conducted in batch conditions. The influence of different sorption parameters, such as: initial metal concentration, equilibration time, solution pH and presence of EDTA on the amount of Co2+, sorbed was studied and discussed. The sorption process followed pseudo-second-order kinetics with necessary time of 24h to reach equilibrium. Cobalt uptake was quantitatively evaluated using the Langmuir and Dubinin-Kaganer-Radushkevich (DKR) model. The Langmuir adsorption isotherm constant corresponding to adsorption capacity, Xm, was found to be 20.92 mg/g. Sorption of Co2+, is constant in the initial pH range 4-8, because HAP surface buffers these solutions to the constant final pH value of 5.1. In the presence of EDTA, sorption of Co2+ decreases due to formation of complex with lower sorption affinities. Cobalt desorption depends on the composition of the extracting solution. The desorbed amount of cobalt decreased continuously with increasing pH, and increased with increasing Ca2+ concentration in leaching solution. (c) 2006 Elsevier Ltd. All rights reserved. T2 - Water Research T1 - Removal of Co2+ from aqueous solutions by hydroxyapatite VL - 40 IS - 12 SP - 2267 EP - 2274 DO - 10.1016/j.watres.2006.04.031 ER -
@article{ author = "Smičiklas, Ivana D. and Dimović, Slavko and Plećaš, Ilija B. and Mitrić, Miodrag", year = "2006", abstract = "A study on the removal of cobalt ions from aqueous solutions by synthetic hydroxyapatite was conducted in batch conditions. The influence of different sorption parameters, such as: initial metal concentration, equilibration time, solution pH and presence of EDTA on the amount of Co2+, sorbed was studied and discussed. The sorption process followed pseudo-second-order kinetics with necessary time of 24h to reach equilibrium. Cobalt uptake was quantitatively evaluated using the Langmuir and Dubinin-Kaganer-Radushkevich (DKR) model. The Langmuir adsorption isotherm constant corresponding to adsorption capacity, Xm, was found to be 20.92 mg/g. Sorption of Co2+, is constant in the initial pH range 4-8, because HAP surface buffers these solutions to the constant final pH value of 5.1. In the presence of EDTA, sorption of Co2+ decreases due to formation of complex with lower sorption affinities. Cobalt desorption depends on the composition of the extracting solution. The desorbed amount of cobalt decreased continuously with increasing pH, and increased with increasing Ca2+ concentration in leaching solution. (c) 2006 Elsevier Ltd. All rights reserved.", journal = "Water Research", title = "Removal of Co2+ from aqueous solutions by hydroxyapatite", volume = "40", number = "12", pages = "2267-2274", doi = "10.1016/j.watres.2006.04.031" }
Smičiklas, I. D., Dimović, S., Plećaš, I. B.,& Mitrić, M.. (2006). Removal of Co2+ from aqueous solutions by hydroxyapatite. in Water Research, 40(12), 2267-2274. https://doi.org/10.1016/j.watres.2006.04.031
Smičiklas ID, Dimović S, Plećaš IB, Mitrić M. Removal of Co2+ from aqueous solutions by hydroxyapatite. in Water Research. 2006;40(12):2267-2274. doi:10.1016/j.watres.2006.04.031 .
Smičiklas, Ivana D., Dimović, Slavko, Plećaš, Ilija B., Mitrić, Miodrag, "Removal of Co2+ from aqueous solutions by hydroxyapatite" in Water Research, 40, no. 12 (2006):2267-2274, https://doi.org/10.1016/j.watres.2006.04.031 . .