期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2018
卷号：9
期号：2
页码：551-558
DOI：10.26872/jmes.2018.9.2.60
出版社：University of Mohammed Premier Oujda
摘要：Oil mill wastewaters (OMW) are a liquid effluents resulting from the extraction of the oliveindustry, characterized by their acidic pH (<5), their red-brown color, Chemical OxygenDemand may exceed 220 g / L, high phosphorus content that accelerates the growth ofalgae resulting in eutrophication, high salinity and very large quantity of phenoliccompounds (>8g/L) which cause the destruction of soil microflora and induce toxic effectson plant crops. In addition, this compounds lead to sterilization of soil and the imbalance ofthe biological interaction between soil's microflora and plants. To treat these liquid wastes,several techniques have been used, but the results are not satisfactory. For this we havechosen the electrochemical process because it is environmental and economic. In this workthe electrochemical degradation of olive oil mill wastewater (OMW) was investigated usinga Tin dioxide anode SnO2 in chloride containing solution by cyclic voltammetry andchronopotentiometry. The electrolytic process was detected by the UV–visible spectrometryand the Chemical Oxygen Demand (COD). The influence of current density, time ofelectrolysis and the concentration of conductive salt were studied. The results obtainedshow that after only 4 hours of electrolysis, discolouration was reached at 96% with anabatement of COD 73%. The study of the applied current density shows that the bestefficiency of the removal of COD reaches a maximum at 100 mA / cm².
