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Highly ordered macroporous gamma-alumina prepared by a modified sol-gel method with a PMMA microsphere template for enhanced Pb2+, Ni2+ and Cd2+ removal
The adsorption performance of three-dimensionally ordered macroporous (3DOM) gamma-alumina was investigated for enhanced Pb2+, Ni2+ and Cd2+ removal. The synthesis was based on a modified sol-gel method using a colloidal crystal template (CCT) method based on PMMA microspheres. The structure was characterized by means of FTIR spectroscopy and XRD analysis. The three-dimensional structure was examined by scanning electron microscopy, which enabled image analysis that showed significantly low shrinkage (8.77%) after calcination at 800 degrees C. The influential parameters, including contact time and adsorbent dosage, were investigated in a batch adsorption study. The adsorption equilibrium and kinetic data were found to be in agreement with the Freundlich isotherm for Pb2+ removal and the Dubinin-Radushkevich isotherm for Ni2+ and Cd2+ removal. The time-dependent adsorption was best described by a pseudo-second-order kinetic model and the Weber-Morris model. High adsorption capacities: 9...5.39, 23.32 and 25.39 mg/g were obtained for Pb2+, Cd2+ and Ni2+ removal at 45 degrees C, respectively. The existence of interconnected macroporous and mesoporous structures of highly ordered gamma-alumina enabled a higher adsorption capacity in comparison with literature data for others alumina-based adsorbents.
TY - JOUR
AU - Drah, Abdusalam
AU - Tomić, Nataša
AU - Velicić, Zorica
AU - Marinković, Aleksandar
AU - Radovanović, Željko
AU - Veličković, Zlate
AU - Jančić-Heinemann, Radmila
PY - 2017
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3546
AB - The adsorption performance of three-dimensionally ordered macroporous (3DOM) gamma-alumina was investigated for enhanced Pb2+, Ni2+ and Cd2+ removal. The synthesis was based on a modified sol-gel method using a colloidal crystal template (CCT) method based on PMMA microspheres. The structure was characterized by means of FTIR spectroscopy and XRD analysis. The three-dimensional structure was examined by scanning electron microscopy, which enabled image analysis that showed significantly low shrinkage (8.77%) after calcination at 800 degrees C. The influential parameters, including contact time and adsorbent dosage, were investigated in a batch adsorption study. The adsorption equilibrium and kinetic data were found to be in agreement with the Freundlich isotherm for Pb2+ removal and the Dubinin-Radushkevich isotherm for Ni2+ and Cd2+ removal. The time-dependent adsorption was best described by a pseudo-second-order kinetic model and the Weber-Morris model. High adsorption capacities: 95.39, 23.32 and 25.39 mg/g were obtained for Pb2+, Cd2+ and Ni2+ removal at 45 degrees C, respectively. The existence of interconnected macroporous and mesoporous structures of highly ordered gamma-alumina enabled a higher adsorption capacity in comparison with literature data for others alumina-based adsorbents.
PB - Elsevier Sci Ltd, Oxford
T2 - Ceramics International
T1 - Highly ordered macroporous gamma-alumina prepared by a modified sol-gel method with a PMMA microsphere template for enhanced Pb2+, Ni2+ and Cd2+ removal
EP - 13827
IS - 16
SP - 13817
VL - 43
DO - 10.1016/j.ceramint.2017.07.102
ER -
@article{
author = "Drah, Abdusalam and Tomić, Nataša and Velicić, Zorica and Marinković, Aleksandar and Radovanović, Željko and Veličković, Zlate and Jančić-Heinemann, Radmila",
year = "2017",
abstract = "The adsorption performance of three-dimensionally ordered macroporous (3DOM) gamma-alumina was investigated for enhanced Pb2+, Ni2+ and Cd2+ removal. The synthesis was based on a modified sol-gel method using a colloidal crystal template (CCT) method based on PMMA microspheres. The structure was characterized by means of FTIR spectroscopy and XRD analysis. The three-dimensional structure was examined by scanning electron microscopy, which enabled image analysis that showed significantly low shrinkage (8.77%) after calcination at 800 degrees C. The influential parameters, including contact time and adsorbent dosage, were investigated in a batch adsorption study. The adsorption equilibrium and kinetic data were found to be in agreement with the Freundlich isotherm for Pb2+ removal and the Dubinin-Radushkevich isotherm for Ni2+ and Cd2+ removal. The time-dependent adsorption was best described by a pseudo-second-order kinetic model and the Weber-Morris model. High adsorption capacities: 95.39, 23.32 and 25.39 mg/g were obtained for Pb2+, Cd2+ and Ni2+ removal at 45 degrees C, respectively. The existence of interconnected macroporous and mesoporous structures of highly ordered gamma-alumina enabled a higher adsorption capacity in comparison with literature data for others alumina-based adsorbents.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Highly ordered macroporous gamma-alumina prepared by a modified sol-gel method with a PMMA microsphere template for enhanced Pb2+, Ni2+ and Cd2+ removal",
pages = "13827-13817",
number = "16",
volume = "43",
doi = "10.1016/j.ceramint.2017.07.102"
}
Drah, A., Tomić, N., Velicić, Z., Marinković, A., Radovanović, Ž., Veličković, Z.,& Jančić-Heinemann, R.. (2017). Highly ordered macroporous gamma-alumina prepared by a modified sol-gel method with a PMMA microsphere template for enhanced Pb2+, Ni2+ and Cd2+ removal. in Ceramics International
Elsevier Sci Ltd, Oxford., 43(16), 13817-13827.
https://doi.org/10.1016/j.ceramint.2017.07.102
Drah A, Tomić N, Velicić Z, Marinković A, Radovanović Ž, Veličković Z, Jančić-Heinemann R. Highly ordered macroporous gamma-alumina prepared by a modified sol-gel method with a PMMA microsphere template for enhanced Pb2+, Ni2+ and Cd2+ removal. in Ceramics International. 2017;43(16):13817-13827.
doi:10.1016/j.ceramint.2017.07.102 .
Drah, Abdusalam, Tomić, Nataša, Velicić, Zorica, Marinković, Aleksandar, Radovanović, Željko, Veličković, Zlate, Jančić-Heinemann, Radmila, "Highly ordered macroporous gamma-alumina prepared by a modified sol-gel method with a PMMA microsphere template for enhanced Pb2+, Ni2+ and Cd2+ removal" in Ceramics International, 43, no. 16 (2017):13817-13827,
https://doi.org/10.1016/j.ceramint.2017.07.102 . .
