Thermodynamic model for solution behavior and solid-liquid equilibrium in Na-Al(III)-Fe(III)-Cr(III)-Cl-H2O system at 25°C
| Autor: | Mohamed Azaroual, Laurent André, Christomir Christov, Arnault Lassin |
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| Přispěvatelé: | Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Bulgarian Academy of Sciences (BAS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Pulmonary and Respiratory Medicine
Geography (General) Science chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy 0104 chemical sciences Thermodynamic model Chromium 020401 chemical engineering chemistry [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Physical chemistry G1-922 Pediatrics Perinatology and Child Health 0204 chemical engineering ComputingMilieux_MISCELLANEOUS Solid liquid |
| Zdroj: | Acta Scientifica Naturalis, Vol 5, Iss 1, Pp 6-16 (2018) Acta Scientifica Naturalis Acta Scientifica Naturalis, K. Preslavsky University, 2018, 5 (1), pp.6-16. ⟨10.2478/asn-2018-0002⟩ |
| ISSN: | 2367-5144 |
| DOI: | 10.2478/asn-2018-0002⟩ |
| Popis: | The knowledge of the thermodynamic behavior of multicomponent aqueous electrolyte systems is of main interest in geo-, and environmental-sciences. The main objective of this study is the development of a high accuracy thermodynamic model for solution behavior, and highly soluble M(III)Cl3(s) (M= Al, Fe, Cr) minerals solubility in Na-Al(III)-Cr(III)-Fe(III)-Cl-H2O system at 25°C. Comprehensive thermodynamic models that accurately predict aluminium, chromium and iron aqueous chemistry and M(III) mineral solubilities as a function of pH, solution composition and concentration are critical for understanding many important geochemical and environmental processes involving these metals (e.g., mineral dissolution/alteration, rock formation, changes in rock permeability and fluid flow, soil formation, mass transport, toxic M(III) remediation). Such a model would also have many industrial applications (e.g., aluminium, chromium and iron production, and their corrosion, solve scaling problems in geothermal energy and oil production). Comparisons of solubility and activity calculations with the experimental data in binary and ternary systems indicate that model predictions are within the uncertainty of the data. Limitations of the model due to data insufficiencies are discussed. The solubility modeling approach, implemented to the Pitzer specific interaction equations is employed. The resulting parameterization was developed for the geochemical Pitzer formalism based PHREEQC database. |
| Databáze: | OpenAIRE |
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