Electrochemical treatment of olive mill wastewater: Treatment extent and effluent phenolic compounds monitoring using some uncommon analytical tools

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)

“…The organic content of the polluted water is still quite complex with the presence of 23 constituents. The identification of different compounds was based on their mass spectra, compared with data base of NIST and the published results in the literature [5,9,[27][28][29][30][31][32][33][34]. The GC profile showed the presence of a great diversity of the identified compounds and highlights an important heterogeneity in the organic composition of the contaminated and charged water by OMWW.…”

“…During production, a high water content of organic material is generated as a by-product of mechanical extraction. Consequently, there are large amounts (more than 30 million m 3 ) of waste per year, formed over a short period of about 3 to 4 months [1,[3][4][5][6]. This manufacture has a significant impact on the quality and composition of surface and ground waters.…”

“…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]. In this way, several studies show that phenolic compounds present a major disadvantage for the environment and are primarily responsible for toxicity [11] and phytotoxicity [6,12].…”

The Analysis of Impact Factors for Dissolved Oxygen Concentration in Wastewater Treatment System Using an Adaptive Modeling Method

“…The initial value of transfer coefficient for the dynamic model, K a0 , is 0.18(g/m 3 )/(m 3 /min), and K q0 is -0.012(g/m 3 )/(m 3 /min) [16][17][18]. At the same time white noise was added to the model input.…”

Electrochemical treatment of aqueous solutions of catechol by various electrochemical advanced oxidation processes: Effect of the process and of operating parameters

“…In EF process, H 2 O 2 , produced at the cathode by oxygen reduction (eq. (1) Catechol is one of the most plentiful compounds in olive mills wastewaters (OMW) [6].…”