The biodegradation of recalcitrant effluents from an olive mill by a white-rot fungus

Antioxidant activity of olive oil mill wastewater obtained from different thermal treatments

“…So OOMWW produced during the olive oil extraction process, consists of an effluent liquid that possesses a considerable polluting charge and causes evident problems of disposal in the European areas of olive cultivation. OOMWW shows a low leaning towards biological treatments, which would allow for its disposal due to the consistent presence of organic substances including sugars, tannins, polyphenols, polyalcohols, pectins, and lipids (D'Annibale et al, 1998). On the one hand, phenols are responsible of the high values of COD and BOD 5 , on the other hand if recovered, they might be reused as natural antioxidants as a replacement for BHA (2(3) tertbutyl-4-hydroxyanisole), BHT (3,5-di-tert-butyl-4-hydroxytoluene), TBHA (tert-butyl-hydroxyl-amineacetate), nDGA (nord-hydroguaiaretic acid) and other synthetic antioxidants (ascorbic acid, gallate propyl, gallateottil, gallatedodecyle).…”

Utilization of fungi for biotreatment of raw wastewaters

“…Fungal pretreatment (Table 2) of these effluents under aerobic conditions makes it possible to obtain phenol reduction (51-100%), good decolourisation (31-100%), biochemical oxygen demand (BOD) reduction up to 85.4%, and enzyme production (protease, Lacc (EC 1.10.3.2); LiP (EC 1.11.1.14), MnP (EC 1.11.1.13), amylase, etc.) (Vinciguerra et al, 1995;Yesilada et al, 1995;Garcia et al, 1997Garcia et al, , 2000D'Annibale et al, 1998;Setti et al, 1998;Gharsallah et al, 1999;Robles et al, 2000;Kissi et al, 2001). Amendment of olive mill wastewater (OMW) composition (addition of co-substrate, nutrients, salts) influences the removal of COD, phenols and colours (Yesilada et al, 1998).…”

GC-MS, FTIR and 1H ,13C NMR Structural Analysis and Identification of Phenolic Compounds in Olive Mill Wastewater Extracted from Oued Oussefrou Effluent (Beni Mellal-Morocco)

“…Therefore, the untreated residue presents one of the most important environmental problems in that geographic area, especially in the aquatic environment. This waste, commonly named olive mill wastewater (OMWW), is a mixture of a viscous liquid and a reddish disorder, from brown to blackish, with a complex mixture of water (83-96%); sugar, nitrogenous substances, organic acids, polyphenols, polyalcohols, pectins, mucilages, tanins, lipids and inorganic substances [8][9][10]. Among these organic substances, the rate of phenolic compounds is relatively high and is characterized by its great variety and complexity as part of OMWW [2,[4][5].…”