Search Results - "Resentera, Alexander C."

Combustion global kinetic model of an industrial hydrochar by Resentera, Alexander C., Tancredi, Néstor, Plascencia, Carmina Reyes

“…This research analyzes the thermal and kinetic behavior of the combustion of hydrochar obtained industrially from green waste biomass. The combustion kinetic…”
Get full text

Low-temperature lithium extraction from α-spodumene with NH4HF2: Modeling and optimization by least squares and artificial neural networks by Resentera, Alexander C., Esquivel, Marcelo R., Rodriguez, Mario H.

“…[Display omitted] •Modeling and optimization of Li extraction by LS and ANN•Li extraction of 96% from α-spodumene at low-temperature (157°C) using…”
Get full text

New insights into the thermal behavior and stability of ammonium bifluoride: non-isothermal thermokinetic analysis by Resentera, Alexander C., Esquivel, Marcelo R., Rodriguez, Mario H.

“…In this research, the thermal behavior of NH 4 HF 2 was studied by non-isothermal thermogravimetric analysis between 298 and 600 K in a nitrogen atmosphere…”
Get full text

Thermal behavior of ammonium fluorosilicates complexes: Obtaining and kinetic analysis by Resentera, Alexander C., Perejón, Antonio, Esquivel, Marcelo R., Pérez-Maqueda, Luis A., Rodriguez, Mario H.

“…In this work, a mixture of (NH4)3SiF7/(NH4)2SiF6 powders was obtained as a by-product of the Li extraction process from α-spodumene aluminosilicate with…”
Get full text

Efficient extraction of lithium from β-spodumene by direct roasting with NaF and leaching by Rosales, Gustavo D., Resentera, Alexander C.J., Gonzalez, Jorge A., Wuilloud, Rodolfo G., Rodriguez, Mario H.

“…[Display omitted] •Roasting of β-spodumene with NaF to produce LiF, nepheline and albite.•Efficient leaching of LiF in acid medium.•Initial temperature…”
Get full text

Some limitations of the Fraser-Suzuki function for fitting thermokinetic curves by Resentera, Alexander C., Rodriguez, Mario H.

“…•Kinetic processes with models F0, D1, and Pn are simulated.•A process of two overlapping independent steps (D3+F0) is simulated.•The Fraser-Suzuki function…”
Get full text

Thermal and structural analysis of the reaction pathways of α-spodumene with NH4HF2 by Resentera, Alexander C., Rosales, Gustavo D., Esquivel, Marcelo R., Rodriguez, Mario H.

“…[Display omitted] •Fluorination of α-spodumene with NH4HF2 by straightforward thermal treatment.•Generation of LiF/AlF3 mixture as main product at…”
Get full text

Optimization of LiF dissolution with Al2(SO4)3 and its application to lithium extraction by fluorination of α-spodumene by Rosales, Gustavo D., Resentera, Alexander C., Fino, Gretel J., Pinna, Eliana G., Rodriguez, Mario H.

“…Numerous Li extraction methods from minerals and e-waste have been reported in the literature. Among them, direct fluorination processes appear to be a viable…”
Get full text

Lithium fluoride dissolution in sulfuric acid solution: Optimization and application in the extraction of lithium from fluorinated α-spodumene by Resentera, Alexander C., Rosales, Gustavo D., Esquivel, Marcelo R., Rodriguez, Mario H.

“…Fluorination processes have been presented as an alternative to Li extraction and recovery processes from minerals and electronic waste. One of the possible…”
Get full text

Acid dissolution of LiF/(NH4)3AlF6 mixtures obtained in the fluorination of α-spodumene with NH4HF2: Modeling and optimization by Resentera, Alexander C., Rosales, Gustavo D., Esquivel, Marcelo R., Rodriguez, Mario H.

“…Lithium is an essential element in the current energy paradigm shift. Therefore, Li extraction from mineral sources has become a scientific and technological…”
Get full text

Simple process for lithium extraction from α-spodumene with potassium fluoride: Modeling and optimization by Rosales, Gustavo D., Resentera, Alexander C., Braga, Paulo F.A., Esquivel, Marcelo R., Rodriguez, Mario H.

“…New developments in energy storage technologies have positioned lithium as a critical energy element worldwide. For this reason, it is relevant to investigate…”
Get full text

Optimization of combined mechanical activation-leaching parameters of low-grade α-spodumene/NaF mixture using response surface methodology by Rosales, Gustavo D., C. J. Resentera, Alexander, Wuilloud, Rodolfo G., Rodriguez, Mario H., Esquivel, Marcelo R.

“…[Display omitted] •Mechanical activation of low-grade α-spodumene/NaF.•Optimized milling time, leaching time and temperature.•Selective lithium extraction…”
Get full text