Sobre la eficiencia del rechazo de una membrana polimérica de ósmosis inversa para la purificación del agua residual de almazara de dos fases, previamente tratada mediante un proceso avanzado de oxidación

Autores/as

DOI:

https://doi.org/10.3989/gya.0797161

Palabras clave:

Agua residual de la industria oleícola, Ósmosis inversa, Purificación de aguas residuales, Recuperación de efluentes

Resumen


En trabajos previos con agua residual de almazara, se solucionó el problema en relación a la presencia de compuestos fenólicos y la considerable concentración de material orgánico. Sin embargo, el efluente presentaba una salinidad significativa tras éste. Este trabajo tiene por objetivo estudiar la adecuada operación de una membrana de ósmosis inversa (OI) para asegurar rendimientos constantes por largos períodos de tiempo de operación. Se examina y discute el efecto de los parámetros de operación en el rendimiento dinámico del rechazo de especies diana. Se observó que la eficiencia de rechazo de todas las especies siguió un patrón similar, consistente en una mejora inicial que posteriormente minoró con el tiempo de operación. El rechazo de iones divalentes se mantuvo constante sobre 99% independientemente de las condiciones de operación. La selectividad del rechazo siguió el orden SO42- > Cl- > NO3- y Ca2+ > Mg2+ > K+> Na+ en general. Las especies divalentes fueron moderadamente más rechazadas que las monovalentes, en concordancia con su mayor carga y tamaño molecular, y los iones sulfato fueron consistentemente rechazados al 99%. Finalmente, el efluente a la salida de la membrana de OI se encontraba exento de los altos valores de conductividad inicialmente presentes (rechazo superior al 97%), permitiendo su reutilización como agua de regadío de buena calidad (inferior a 1 mS/cm).

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Citas

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Publicado

2017-03-30

Cómo citar

1.
Ochando-Pulido JM, Martínez-Férez A. Sobre la eficiencia del rechazo de una membrana polimérica de ósmosis inversa para la purificación del agua residual de almazara de dos fases, previamente tratada mediante un proceso avanzado de oxidación. Grasas aceites [Internet]. 30 de marzo de 2017 [citado 1 de mayo de 2025];68(1):e179. Disponible en: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1646

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Investigación