Mentha arvensis IN OIL SOLID-LIQUID EQUILIBRIUM
| Autor: | Aline A. O. Alves, Silas Derenzo, Guilherme Carmelo Ungar, Wagner Aldeia |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Linear function (calculus)
Materials science biology General Chemical Engineering Mentha arvensis lcsh:TP155-156 Thermodynamics L-Menthol Atmospheric temperature range Mole fraction biology.organism_classification law.invention Enthalpy change of solution Solubility law Phase equilibria lcsh:Chemical engineering Essential oil Linear equation |
| Zdroj: | Brazilian Journal of Chemical Engineering, Vol 36, Iss 1, Pp 609-614 Brazilian Journal of Chemical Engineering v.36 n.1 2019 Brazilian Journal of Chemical Engineering Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ Brazilian Journal of Chemical Engineering, Volume: 36, Issue: 1, Pages: 609-614, Published: 15 JUL 2019 |
| ISSN: | 1678-4383 0104-6632 |
| DOI: | 10.1590/0104-6632.20190361s20170579 |
| Popis: | L-menthol is an essential oil produced from Mentha arvensis. An experimental L-menthol solid-liquid equilibrium in menthol oil constituents was determined in the temperature range between 271 K and 300 K, by the method of creating a saturated solution at a given temperature by using an excess of crystals in the suspension. The mole fraction of the experimental data, on a logarithmic basis, were fitted against T by the Apelblat equation and by a linear equation with good results. The equations were: ln(x) =#091;- 52.45 + 1,170.70/T + 8.48.ln(T) #093; and ln(x) = 3.98 -1,249.65/T with T in K. Both equations give a good correlation with the experimental data. From the Apelblat equation the enthalpy of solution was also calculated as a linear function of temperature and has an average value of 150.31 J/mol in the temperature interval studied. |
| Databáze: | OpenAIRE |
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