TY  - JOUR
AU  - Smiciklas, Ivana
AU  - Jovic, Mihajlo
AU  - Jankovic, Marija
AU  - Smiljanic, Slavko
AU  - Onjia, Antonije
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4843
AB  - Acid mine drainage (AMD) remediation by red mud (RM) can benefit process sustainability and waste valorization. Though the AMD properties upon using RM have been broadly investigated, the key features and the environmental stability of spent RM are poorly defined. The current study aimed to compare the AMD neutralization and metal removal potential of the fresh (FRM) and aged (ARM) Bayer red mud and evaluate the textural, mineralogical, chemical, radiological properties of solid residues, and the stability of toxic elements. The FRM had larger particles and exhibited higher pH, iron oxide content, and radioactivity than ARM, which could be driven by ARM leaching and settling inside the tailings pond. FRM displayed marginally higher neutralization and metal removal capacity than ARM. Reaction with AMD led to partial dissolution of cancrinite minerals without significant changes in the particle size distribution. The leachability of investigated toxic elements (As, Ba, Cd, Cr, Cu, Ni, Pb, Se, Zn) from neutralization residues complied with the limits set for inert waste by the EN 12457-2 test. Owing to the RM neutralization, the leachability of Al, As, Cr, and V decreased with respect to pristine samples. While Zn and Mn sorbed from AMD were stable following SPLP and EN 12457-2 tests, the sequential extraction revealed increased environmental availability, posing a potential risk during disposal or application if accompanied by a decline in pH. The slight increase in radioactivity upon RM neutralization indicates that changes in radionuclide inventory should be monitored when using RM in neutralization.
T2  - Water Air and Soil Pollution
T1  - Environmental Safety Aspects of Solid Residues Resulting from Acid Mine Drainage Neutralization with Fresh and Aged Red Mud
IS  - 12
VL  - 232
DO  - 10.1007/s11270-021-05442-3
ER  - 

@article{
author = "Smiciklas, Ivana and Jovic, Mihajlo and Jankovic, Marija and Smiljanic, Slavko and Onjia, Antonije",
year = "2021",
abstract = "Acid mine drainage (AMD) remediation by red mud (RM) can benefit process sustainability and waste valorization. Though the AMD properties upon using RM have been broadly investigated, the key features and the environmental stability of spent RM are poorly defined. The current study aimed to compare the AMD neutralization and metal removal potential of the fresh (FRM) and aged (ARM) Bayer red mud and evaluate the textural, mineralogical, chemical, radiological properties of solid residues, and the stability of toxic elements. The FRM had larger particles and exhibited higher pH, iron oxide content, and radioactivity than ARM, which could be driven by ARM leaching and settling inside the tailings pond. FRM displayed marginally higher neutralization and metal removal capacity than ARM. Reaction with AMD led to partial dissolution of cancrinite minerals without significant changes in the particle size distribution. The leachability of investigated toxic elements (As, Ba, Cd, Cr, Cu, Ni, Pb, Se, Zn) from neutralization residues complied with the limits set for inert waste by the EN 12457-2 test. Owing to the RM neutralization, the leachability of Al, As, Cr, and V decreased with respect to pristine samples. While Zn and Mn sorbed from AMD were stable following SPLP and EN 12457-2 tests, the sequential extraction revealed increased environmental availability, posing a potential risk during disposal or application if accompanied by a decline in pH. The slight increase in radioactivity upon RM neutralization indicates that changes in radionuclide inventory should be monitored when using RM in neutralization.",
journal = "Water Air and Soil Pollution",
title = "Environmental Safety Aspects of Solid Residues Resulting from Acid Mine Drainage Neutralization with Fresh and Aged Red Mud",
number = "12",
volume = "232",
doi = "10.1007/s11270-021-05442-3"
}

Smiciklas, I., Jovic, M., Jankovic, M., Smiljanic, S.,& Onjia, A.. (2021). Environmental Safety Aspects of Solid Residues Resulting from Acid Mine Drainage Neutralization with Fresh and Aged Red Mud. in Water Air and Soil Pollution, 232(12).
https://doi.org/10.1007/s11270-021-05442-3

Smiciklas I, Jovic M, Jankovic M, Smiljanic S, Onjia A. Environmental Safety Aspects of Solid Residues Resulting from Acid Mine Drainage Neutralization with Fresh and Aged Red Mud. in Water Air and Soil Pollution. 2021;232(12).
doi:10.1007/s11270-021-05442-3 .

Smiciklas, Ivana, Jovic, Mihajlo, Jankovic, Marija, Smiljanic, Slavko, Onjia, Antonije, "Environmental Safety Aspects of Solid Residues Resulting from Acid Mine Drainage Neutralization with Fresh and Aged Red Mud" in Water Air and Soil Pollution, 232, no. 12 (2021),
https://doi.org/10.1007/s11270-021-05442-3 . .

TY  - JOUR
AU  - Jankovic, Bojan
AU  - Smiciklas, Ivana
AU  - Stajić-Trošić, Jasna
AU  - Antonovic, Dusan
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5724
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.
PB  - Elsevier
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
EP  - 59
SP  - 46
VL  - 123
DO  - 10.1016/j.minpro.2013.05.003
ER  - 

@article{
author = "Jankovic, Bojan and Smiciklas, Ivana and Stajić-Trošić, Jasna and Antonovic, Dusan",
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.",
publisher = "Elsevier",
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",
pages = "59-46",
volume = "123",
doi = "10.1016/j.minpro.2013.05.003"
}

Jankovic, B., Smiciklas, I., Stajić-Trošić, J.,& Antonovic, 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
Elsevier., 123, 46-59.
https://doi.org/10.1016/j.minpro.2013.05.003

Jankovic B, Smiciklas I, Stajić-Trošić J, Antonovic 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 .

Jankovic, Bojan, Smiciklas, Ivana, Stajić-Trošić, Jasna, Antonovic, Dusan, "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 . .