Destrucción térmica de la hidrofobicidad del alperujo compostado y su evaluación funcional mediante espectroscopía FTIR y análisis termogravimétrico
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2016-03-02
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Jaén: Universidad de Jaén
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[ES] El compost de alperujo presenta dos grandes inconvenientes, el primero es que, especialmente en estados de baja madurez, presenta valores de hidrofobicidad muy altos, debido a la mayor o menor presencia de componentes de escasa evolución y con fuerte carácter alifático, que reducen la capacidad de retención de agua una vez utilizados en el suelo. El segundo gran problema es su elevada alcalinidad, que podría interferir en el buen funcionamiento del ciclado de nutrientes una vez incorporado al suelo. Dicha alcalinidad puede corregirse mediante la incorporación de diversos aditivos, p.e., residuos de café, aunque también presentan el inconveniente de ser fuertemente hidrófobos. En el presente estudio se ha conseguido eliminar la hidrofobicidad en todas las muestras estudiadas mediante un tratamiento térmico, y se ha analizado su evolución a través de perfiles termogravimétricos y de infrarrojo medio.
[EN] The olive-mill pomace compost has two major drawbacks. On the one hand, especially in low maturity stages, presents a very high hydrophobicity degree, due to the greater or lesser pressence of components with little evolution and strong aliphatic character, which reduce the water retention capacity when used in the soil. On the other hand, it has a problem of high alkalinity, which could interfere with the proper functioning of nutrient cycling once incorporated into the soil. This alkalinity can be corrected by incorporating various additives, e.g., coffe waste, but also it has the disadvantage of being strongly hydrophobic. In the present study, different types of organic samples have been managed to eliminate the hydrophobicity by thermal treatment, and analyzed its evolution through thermogravimetric profiles and mid-IR spectroscopy.
[EN] The olive-mill pomace compost has two major drawbacks. On the one hand, especially in low maturity stages, presents a very high hydrophobicity degree, due to the greater or lesser pressence of components with little evolution and strong aliphatic character, which reduce the water retention capacity when used in the soil. On the other hand, it has a problem of high alkalinity, which could interfere with the proper functioning of nutrient cycling once incorporated into the soil. This alkalinity can be corrected by incorporating various additives, e.g., coffe waste, but also it has the disadvantage of being strongly hydrophobic. In the present study, different types of organic samples have been managed to eliminate the hydrophobicity by thermal treatment, and analyzed its evolution through thermogravimetric profiles and mid-IR spectroscopy.
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Edafología