Assessment of Uruguayan Oil Shales : physicochemical, thermal and morphological characterization

Dublin Core

Title

Assessment of Uruguayan Oil Shales : physicochemical, thermal and morphological characterization

Subject

PETROLEO
BIOMASA
URUGUAY
PROPIEDADES FISICOQUIMICAS
PROPIEDADES TERMICAS
CARACTERIZACION MORFOLOGICA
BIBLIOGRAFIA NACIONAL QUIMICA
2018

Abstract

Oil shales from Mangrullo Formation (Uruguay) was assessed as a potential fuel for energy production. The assessment is based on a comprehensive characterization of the material from a thermal perspective. Co-combustion of this type of fuel with biomass waste can enhance the combustion performance and decrease hazardous gas emissions. The low heating value (3.2 MJ kg−1) of the Uruguayan oil shale indicates that it could be mixed with biomass to obtain better results. Stratified sampling of drill cores was used to obtain a representative sample. The morphological and structural characteristics of the oil shale were studied by X-ray diffraction and scanning electron microscopy. Chemical composition (hydrocarbons and minerals) of oil shales was investigated by X-ray diffraction, X-ray fluorescence, proximate and ultimate analysis and Fourier transform infrared spectroscopy. Rock Eval analysis was performed to measure richness and maturity of the Uruguayan oil shale, the results of the TOC content (8.93%) and the hydrogen index (525 mg HC/ g TOC) indicated that it constitutes an excellent source rock. The kinetic of the combustion and thermal properties of oil shale were studied. The activation energy of the different reaction stages was calculated using the Flynn-Wall-Ozawa model, then we obtained the pre-exponencial factor and the reaction order optimizing the theoretical model using the experimental data. Results indicated that the combustion of the oil shale exhibits multiple reaction stages with activations energies that varies between 152.2 and 316.4 kJ mol−1.

Creator

Yermán, Luis
Conti, Bruno
Morales Demarco, Manuela.
Gristo, Pablo
Portugau, Patrice

Source

Fuel v. 234, 2018. -- p. 347-357

Publisher

Elsevier

Date

2018

Rights

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Format

PDF

Language

Inglés

Type

Artículo

Identifier

DOI:10.1016/j.fuel.2018.07.031

Coverage

Uruguay

Document Item Type Metadata

Original Format

PDF
Date Added
April 26, 2019
Collection
Bibliografía Nacional Química
Item Type
Document
Tags
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Citation
Torres, Martín et al., “Assessment of Uruguayan Oil Shales : physicochemical, thermal and morphological characterization,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed December 16, 2025, https://riquim.fq.edu.uy/items/show/5743.