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The biodegradation of Olive Oil Mill Wastewaters by Sawdust and by a <i>Phanerochaetae chrysosporium</i>
Author(s) -
M. Mebirouk,
L. Sbai,
Mario López,
José González
Publication year - 2007
Publication title -
grasas y aceites
Language(s) - Spanish
Resource type - Journals
eISSN - 1988-4214
pISSN - 0017-3495
DOI - 10.3989/gya.2007.v58.i4.448
Subject(s) - sawdust , biodegradation , chrysosporium , pulp and paper industry , phanerochaete , chemistry , olive oil , environmental science , waste management , food science , organic chemistry , lignin , engineering
Este trabajo describe la decoloraci??n y la disminuci??n de la demanda qu??mica de ox??geno del alpech??n (OMW) por Phanerochaetae chrysosporium, crecido en cultivos est??ticos, agitados e inmovilizados. Cuando P. chrysosporium fue cultivado en agitaci??n, no se observa ninguna decoloraci??n de OMW crudo, la decoloraci??n ocurre solamente despu??s de eliminar los polifenoles mediante adsorci??n en el serr??n (Disminuci??n del 39% del contenido en polifenoles). La utilizaci??n de la lignina peroxidasa generada en el medio da lugar a la mayor decoloraci??n de alpech??n y a las eficiencias de eliminaci??n de DQO m??s altas. Las pruebas de la decoloraci??n realizadas en las muestras de OMW que fueron pretratadas por la adsorci??n de madera del serr??n, y usaron cultivos inmovilizadas demostraron resultados mejores. Por tanto, la eficiencia de eliminaci??n de DQO alcanz?? un 70%. La reducci??n de los polifenoles alcanz?? los niveles m??s altos siempre, i.e. 62%. Se observ?? una decoloraci??n significativa del efluente.This paper discusses decolorization and chemical oxygen demand (COD) abatement in olive mill wastewaters (OMW) by Phanerochaetae chrysosporium grown in static,\udstirred and immobilized cultures. When P. Chrysosporium is used in cultures, no decolorization of crude OMW is observed. Decolorization occurs only after the removal of polyphenols by adsorption in sawdust, which allows a 39% polyphenol removal. The use of a High lignin peroxides (Lip)\udproducing medium, yields the highest OMW decolorization and COD removal efficiencies. The use of P. Chrysosporium immobilized on polyurethane foam leads to significant\udabatements of OMW polluting characteristics. And COD abatement reached 70%. The reduction of polyphenols reached its highest level at 62%. A significant effluent decolorization is apparent

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