Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent
2017
Autori
Obradović, NinaFilipović, Suzana
Rusmirović, Jelena
Postole, Georgeta
Marinković, Aleksandar
Radić, Danka
Rakić, Vesna M.
Pavlović, Vladimir B.
Auroux, Aline
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
In this paper, synthesis of porous wollastonite-based ceramics was reported. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, yeast as a pore-forming agent was added to the as-obtained powders. Sintering regime was set up based on the results obtained by differential thermal analysis. Prepared mixture was pressed into pallets and sintered at 900 degrees C for 1 h. After the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by X-ray diffraction method and SEM. In a batch test, the influence of pH, contact time and initial ion concentration on adsorption efficiency of As+5, Cr+6, and phosphate ions on synthesized wollastonite-based ceramics were studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-M...orris model that predicted intra-particle diffusion as a rate-controlling step of overall process. High adsorption capacities 39.97, 21.87, and 15.29 mgg(-1) were obtained for As+5, Cr+6, and phosphate ions, respectively.
Ključne reči:
Yeast / Sintering / Porous wollastonite ceramicsIzvor:
Science of Sintering, 2017, 49, 3, 235-246Izdavač:
- Međunarodni Institut za nauku o sinterovanju, Beograd
DOI: 10.2298/SOS1703235O
ISSN: 0350-820X
WoS: 000412888800003
Scopus: 2-s2.0-85037839299
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Obradović, Nina AU - Filipović, Suzana AU - Rusmirović, Jelena AU - Postole, Georgeta AU - Marinković, Aleksandar AU - Radić, Danka AU - Rakić, Vesna M. AU - Pavlović, Vladimir B. AU - Auroux, Aline PY - 2017 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3627 AB - In this paper, synthesis of porous wollastonite-based ceramics was reported. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, yeast as a pore-forming agent was added to the as-obtained powders. Sintering regime was set up based on the results obtained by differential thermal analysis. Prepared mixture was pressed into pallets and sintered at 900 degrees C for 1 h. After the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by X-ray diffraction method and SEM. In a batch test, the influence of pH, contact time and initial ion concentration on adsorption efficiency of As+5, Cr+6, and phosphate ions on synthesized wollastonite-based ceramics were studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model that predicted intra-particle diffusion as a rate-controlling step of overall process. High adsorption capacities 39.97, 21.87, and 15.29 mgg(-1) were obtained for As+5, Cr+6, and phosphate ions, respectively. PB - Međunarodni Institut za nauku o sinterovanju, Beograd T2 - Science of Sintering T1 - Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent EP - 246 IS - 3 SP - 235 VL - 49 DO - 10.2298/SOS1703235O ER -
@article{ author = "Obradović, Nina and Filipović, Suzana and Rusmirović, Jelena and Postole, Georgeta and Marinković, Aleksandar and Radić, Danka and Rakić, Vesna M. and Pavlović, Vladimir B. and Auroux, Aline", year = "2017", abstract = "In this paper, synthesis of porous wollastonite-based ceramics was reported. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, yeast as a pore-forming agent was added to the as-obtained powders. Sintering regime was set up based on the results obtained by differential thermal analysis. Prepared mixture was pressed into pallets and sintered at 900 degrees C for 1 h. After the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by X-ray diffraction method and SEM. In a batch test, the influence of pH, contact time and initial ion concentration on adsorption efficiency of As+5, Cr+6, and phosphate ions on synthesized wollastonite-based ceramics were studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model that predicted intra-particle diffusion as a rate-controlling step of overall process. High adsorption capacities 39.97, 21.87, and 15.29 mgg(-1) were obtained for As+5, Cr+6, and phosphate ions, respectively.", publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd", journal = "Science of Sintering", title = "Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent", pages = "246-235", number = "3", volume = "49", doi = "10.2298/SOS1703235O" }
Obradović, N., Filipović, S., Rusmirović, J., Postole, G., Marinković, A., Radić, D., Rakić, V. M., Pavlović, V. B.,& Auroux, A.. (2017). Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent. in Science of Sintering Međunarodni Institut za nauku o sinterovanju, Beograd., 49(3), 235-246. https://doi.org/10.2298/SOS1703235O
Obradović N, Filipović S, Rusmirović J, Postole G, Marinković A, Radić D, Rakić VM, Pavlović VB, Auroux A. Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent. in Science of Sintering. 2017;49(3):235-246. doi:10.2298/SOS1703235O .
Obradović, Nina, Filipović, Suzana, Rusmirović, Jelena, Postole, Georgeta, Marinković, Aleksandar, Radić, Danka, Rakić, Vesna M., Pavlović, Vladimir B., Auroux, Aline, "Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent" in Science of Sintering, 49, no. 3 (2017):235-246, https://doi.org/10.2298/SOS1703235O . .