The biodegradation of Olive Oil Mill Wastewaters by Sawdust and by a <i>Phanerochaetae chrysosporium</i>

Abstract

RESUMENLa biodegradación del alpechín por sawdust y por Phanerochaetae chrysosporium.Este trabajo describe la decoloración y la disminución de la demanda química de oxígeno del alpechín (OMW) por Phanerochaetae chrysosporium, crecido en cultivos estáti-cos, agitados e inmovilizados. Cuando P. chrysosporium fue cultivado en agitación, no se observa ninguna decoloración de OMW crudo, la decoloración ocurre solamente después de eliminar los polifenoles mediante adsorción en el serrín (Disminución del 39% del contenido en polifenoles). La utilización de la lignina peroxidasa generada en el medio da lugar a la mayor decoloración de alpechín y a las eficiencias de eliminación de DQO más altas. Las pruebas de la decoloración realizadas en las muestras de OMW que fueron pretratadas por la adsorción de madera del serrín, y usaron cultivos inmovilizadas demostraron resultados mejores. Por tanto, la eficiencia de eliminación de DQO alcanzó un 70%. La reducción de los polifenoles alcanzó los niveles más altos siempre, i.e. 62%. Se observó una decoloración significativa del efluente. PALABRAS-CLAVE: Alpechín -Biodegradación --Decoloración -Polifenoles -Serrín. SUMMARY The biodegradation of Olive Oil Mill Wastewaters by Sawdust and by a Phanerochaetae chrysosporium.This paper discusses decolorization and chemical oxygen demand (COD) abatement in olive mill wastewaters (OMW) by Phanerochaetae chrysosporium grown in static, stirred 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) producing medium, yields the highest OMW decolorization and COD removal efficiencies. The use of P. Chrysosporium immobilized on polyurethane foam leads to significant abatements 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.

Synergistic Antibacterial Effects of Polyphenolic Compounds from Olive Mill Wastewater

“…Up to 30 million m 3 of OMW is produced annually in the Middle Eastern countries during the olive oil processing. The OMW is rich with organic compounds (mainly phenols) which creates a number of acute environmental and ecological problems [1, 2]. So far, there is no accepted treatment method for all the wastes generated during olive oil production [3].…”

“…A number of studies have shown that these compounds are effective as antibacterial, antiviral, and antifungal compounds [11–14]. Research into finding new uses for by-products of olive oil production is of great interest not only to the economy but also to the environment, particularly in areas where olives are grown and OMW is wasted [1, 15]. …”

Proposed correlation of modern processing principles for Ayurvedic herbal drug manufacturing: A systematic review

“…In the initial phase when solvent is hot, volatile compounds could be removed from the solvent by evaporation and in the second phase when the solvent is cooled down, adsorption of various extracted compounds on the surface of the nonsoluble part of the herb could happen. The possibility of adsorption phenomenon can be understood by use of various plant product based matrices such as banana peel,[ 21 ] empty fruit bunches of oil-palm,[ 31 ] activated neem leaves,[ 32 ] cactus pear leaves,[ 33 ] sawdust[ 34 35 ] and used tea leaves[ 36 ] in literature for performing adsorption chromatography. The adsorption phenomenon may become more dominant with use of multiple herbs as different herbs can provide different solid phase matrix.…”

Εκτίμηση Της Οικολογικής Ποιότητας Των Απορροών Από Διαφορετικές Μεθόδους Επεξεργασίας Των Ελαιουργικών Αποβλήτων

“…καφεϊκό οξύ) σε σχέση µε τα µονοφαινολικά συστατικά (Borja et al, 1997). Πρόσφατη έρευνα υ̟οστηρίζει ότι οι φαινολικές ενώσεις µε χαµηλό µοριακό βάρος ευθύνονται για την ̟ροαναφερθείσα δράση (Mebirouk et al, 2007 (Ben Othman et al, 2008;. Συγκεκριµένα, όταν το pH είναι µεγαλύτερο του 6, οι φαινολικές ενώσεις ̟ολυµερίζονται και δίνουν σκουρόχρωµα ̟ολυµερή (Ben Othman et al, 2008).…”