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

查看全文 作　　者：Chokri [1,2]Belaid;Moncef [1]Khadraoui;Salma [1]Mseddi;Monem [1]Kallel;Boubaker [1]Elleuch;Jean Franois [2]Fauvarque 高影响力作者 机构地区：[1]Laboratory of Water, Energy and Environment, Sfax University,ENIS, BP '1173' 3038, Sfax, Tunisia;[2]Laboratory of Industrial Electrochemistry,CNAM, 2, Rue Conté 75003, Paris, France高影响力机构 出　　处：《Journal of Environmental Sciences》索引2013年第25卷第1期,共11页高影响力期刊 摘　　要：Problems related with industrials effluents can be divided in two parts: (1) their toxicity associated to their chemical content which should be removed before discharging the wastewater into the receptor media; (2) and the second part is linked to the difficulties of pollution characterisation and monitoring caused by the complexity of these matrixes. This investigation deals with these two aspects, an electrochemical treatment method of an olive mill wastewater (OMW) under platinized expanded titanium electrodes using a modified Grignard reactor for toxicity removal as well as the exploration of the use of some specific analytical tools to monitor effluent phenolic compounds elimination. The results showed that electrochemical oxidation is able to remove/mitigate the OMW pollution. Indeed, 87% of OMW color was removed and all aromatic compounds were disappeared from the solution by anodic oxidation. Moreover, 55% of the chemical oxygen demand (COD) and the total organic carbon (TOC) were reduced. On the other hand, UV- Visible spectrophotometry, Gaz chromatography/mass spectrometry, cyclic voltammetry and 13 C Nuclear Magnetic Resonance (NMR) showed that the used treatment seems efficaciously to eliminate phenolic compounds from OMW. It was concluded that electrochemical oxidation in a modified Grignard reactor is a promising process for the destruction of all phenolic compounds present in OMW. Among the monitoring analytical tools applied, cyclic voltammetry and 13 C NMR are among the techniques that are introduced for the first time to control the advancement of the OMW treatment and gave a close insight on polyphenols disappearance. 关 键 词：酚类化合物 电化学治疗 分析工具 工业废水 监测 污水 油厂 橄榄
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