Formation of porous wollastonite-based ceramics after sintering with yeast as the pore-forming agent
Authors
Obradović, Nina
Filipović, Suzana

Rusmirović, Jelena

Postole, Georgeta
Marinković, Aleksandar

Radić, Danka
Rakić, Vesna M.
Pavlović, Vladimir B.

Auroux, Aline
Article (Published version)
Metadata
Show full item recordAbstract
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 oC 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 oC 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 th...at 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.
Keywords:
porous wollastonite ceramics / yeast / sinteringSource:
Science of Sintering, 2017, 49, 3, 235-246Publisher:
- Belgrade : International Institute for the Science of Sintering
DOI: 10.2298/SOS1703235O
ISSN: 0350-820X (Print); 1820-7413 (Online)
WoS: 000412888800003
Scopus: 2-s2.0-85037839299
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - 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 - https://dais.sanu.ac.rs/123456789/2384 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 oC 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 oC 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 - Belgrade : International Institute for the Science of Sintering T2 - Science of Sintering T1 - Formation of porous wollastonite-based ceramics after sintering with yeast as the pore-forming agent SP - 235 EP - 246 VL - 49 IS - 3 DO - 10.2298/SOS1703235O UR - https://hdl.handle.net/21.15107/rcub_dais_2384 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 oC 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 oC 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 = "Belgrade : International Institute for the Science of Sintering", journal = "Science of Sintering", title = "Formation of porous wollastonite-based ceramics after sintering with yeast as the pore-forming agent", pages = "235-246", volume = "49", number = "3", doi = "10.2298/SOS1703235O", url = "https://hdl.handle.net/21.15107/rcub_dais_2384" }
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 Belgrade : International Institute for the Science of Sintering., 49(3), 235-246. https://doi.org/10.2298/SOS1703235O https://hdl.handle.net/21.15107/rcub_dais_2384
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 https://hdl.handle.net/21.15107/rcub_dais_2384 .
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 ., https://hdl.handle.net/21.15107/rcub_dais_2384 .