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Título

Agrochemical characterisation of “alperujo”, a solid by-product of the two-phase centrifugation method for olive oil extraction

AutorAlburquerque Méndez, José Antonio ; Gonzálvez, José; García, Diego; Cegarra Rosique, Juan
Palabras claveAlperujo
Composting
Olive-mill wastes
Two-phase centrifugation system
Agrochemical characterisation
Fecha de publicaciónene-2004
EditorElsevier
CitaciónBioresource Technology 91(2): 195-200 (2004)
ResumenIntroduction of the two-phase centrifugation system for olive oil extraction during the early nineties in Spain has led to the generation of approximately four million tons per year of a solid olive-mill by-product called “alperujo” (AL). Agrochemical characterisation showed that AL has a high moisture content, slightly acidic pH values and a very high content of organic matter, mainly composed by lignin, hemicellulose and cellulose. It also has a considerable proportion of fats, proteins, water-soluble carbohydrates and a small but active fraction of hydrosoluble phenolic substances. Amongst plant nutrients, AL is rich in potassium, less so in (mainly organic) nitrogen and poor in phosphorus and micronutrients. Some of those properties are not compatible with agricultural requirements, for which reason composting may be considered a suitable alternative for its disposal. AL needs to be characterised before composting, and so an attempt was made to correlate the easily determined ash content with other parameters; the regression models thus obtained are discussed.
Descripción6 pages, 4 tables, 1 figure.
Versión del editorhttp://dx.doi.org/10.1016/S0960-8524(03)00177-9
URIhttp://hdl.handle.net/10261/16494
DOI10.1016/S0960-8524(03)00177-9
ISSN0960-8524
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