Kinetics and thermodynamics of cottonseed oil extraction

Devesh K. Saxena; S. K. Sharma; S. S. Sambi

doi:10.3989/gya.090210

Autores/as

Devesh K. Saxena Research Scholar,University School of Chemical Technology, Guru Gobind Singh Indraprastha University
S. K. Sharma Assistant Professor, University School of Chemical Technology, Guru Gobind Singh Indraprastha University
S. S. Sambi Professor & Dean, University School of Chemical Technology, Guru Gobind Singh Indraprastha University

DOI:

https://doi.org/10.3989/gya.090210

Palabras clave:

Algodón, Cinéticas, Etanol, Extracción de aceite, n-Hexano, Termodinámica

Resumen

El n-hexano derivado del petróleo es comercialmente usado en plantas de extracción con disolventes debido a su mayor eficiencia de extracción, a pesar de que está calificado como altamente tóxico y peligroso. El presente estudio está basado en el uso de etanol, disolvente mucho más seguros y no tóxico, y n-hexano en la extracción de aceite de algodón. Los datos de extracción fueron obtenidos variando la temperatura, la proporción sólido-disolvente y el tamaño de partícula, para comparar la eficiencia de extracción del etanol y del hexano. Los datos muestran que casi la misma cantidad de extracción es posible para ambos disolventes a la proporción más alta de sólido-disolvente. Este estudio es capaz de establecer que las cinéticas de extracción de aceite siguen un mecanismo de reacción de segundo orden. El análisis termodinámico de los datos mostró que ΔHº and ΔSº son positivas, y ΔGº es negativa, indicando que el proceso de extracción es endotérmico, irreversible y espontáneo.

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