Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy
Апстракт
Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud were carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), differential thermal analysis (DTA) and Fourier transform infrared spectroscopy (FTIR). It was found that the investigated decomposition was a complex heterogeneous process, which included two main decomposition stages and one sub-stage. The overall decomposition process consisted of the series of parallel and competitive reactions, which originated from the decomposition of various chemical species and solid-state transformations. This behavior was confirmed by the appearance of different forms of density distribution functions of apparent activation energy values. Furthermore, the conversion range of 0.10 LT = alpha LT = 0.30, with a constant value of the apparent activation energy (146.4 kJ mol(-1)) for the second stage of the overall process, belongs to calci...te decomposition, which takes place through a two-dimensional diffusion mechanism. (C) 2013 Elsevier B.V. All rights reserved.
Кључне речи:
Bauxite red mud / Decomposition / Kinetics / Apparent activation energy / Density distribution functionИзвор:
International Journal of Mineral Processing, 2013, 123, 46-59Финансирање / пројекти:
- Динамика нелинеарних физичкохемијских и биохемијских система са моделирањем и предвиђањем њихових понашања под неравнотежним условима (RS-MESTD-Basic Research (BR or ON)-172015)
- Нове технологије за мониторинг и заштиту животног окружења од штетних хемијских супстанци и радијационог оптерећења (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43009)
DOI: 10.1016/j.minpro.2013.05.003
ISSN: 0301-7516; 1879-3525
WoS: 000323795500007
Scopus: 2-s2.0-84879077673
Колекције
Институција/група
VinčaTY - JOUR AU - Janković, Bojan Ž. AU - Smičiklas, Ivana D. AU - Stajić-Trošić, Jasna T. AU - Antonović, Dušan PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5651 AB - Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud were carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), differential thermal analysis (DTA) and Fourier transform infrared spectroscopy (FTIR). It was found that the investigated decomposition was a complex heterogeneous process, which included two main decomposition stages and one sub-stage. The overall decomposition process consisted of the series of parallel and competitive reactions, which originated from the decomposition of various chemical species and solid-state transformations. This behavior was confirmed by the appearance of different forms of density distribution functions of apparent activation energy values. Furthermore, the conversion range of 0.10 LT = alpha LT = 0.30, with a constant value of the apparent activation energy (146.4 kJ mol(-1)) for the second stage of the overall process, belongs to calcite decomposition, which takes place through a two-dimensional diffusion mechanism. (C) 2013 Elsevier B.V. All rights reserved. T2 - International Journal of Mineral Processing T1 - Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy VL - 123 SP - 46 EP - 59 DO - 10.1016/j.minpro.2013.05.003 ER -
@article{ author = "Janković, Bojan Ž. and Smičiklas, Ivana D. and Stajić-Trošić, Jasna T. and Antonović, Dušan", year = "2013", abstract = "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud were carried out using thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), differential thermal analysis (DTA) and Fourier transform infrared spectroscopy (FTIR). It was found that the investigated decomposition was a complex heterogeneous process, which included two main decomposition stages and one sub-stage. The overall decomposition process consisted of the series of parallel and competitive reactions, which originated from the decomposition of various chemical species and solid-state transformations. This behavior was confirmed by the appearance of different forms of density distribution functions of apparent activation energy values. Furthermore, the conversion range of 0.10 LT = alpha LT = 0.30, with a constant value of the apparent activation energy (146.4 kJ mol(-1)) for the second stage of the overall process, belongs to calcite decomposition, which takes place through a two-dimensional diffusion mechanism. (C) 2013 Elsevier B.V. All rights reserved.", journal = "International Journal of Mineral Processing", title = "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy", volume = "123", pages = "46-59", doi = "10.1016/j.minpro.2013.05.003" }
Janković, B. Ž., Smičiklas, I. D., Stajić-Trošić, J. T.,& Antonović, D.. (2013). Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy. in International Journal of Mineral Processing, 123, 46-59. https://doi.org/10.1016/j.minpro.2013.05.003
Janković BŽ, Smičiklas ID, Stajić-Trošić JT, Antonović D. Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy. in International Journal of Mineral Processing. 2013;123:46-59. doi:10.1016/j.minpro.2013.05.003 .
Janković, Bojan Ž., Smičiklas, Ivana D., Stajić-Trošić, Jasna T., Antonović, Dušan, "Thermal characterization and kinetic analysis of non-isothermal decomposition process of Bauxite red mud. Estimation of density distribution function of the apparent activation energy" in International Journal of Mineral Processing, 123 (2013):46-59, https://doi.org/10.1016/j.minpro.2013.05.003 . .