الفهرس 
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Abstract
The present work deals with the removal of finely dispersed oil from oil/water emulsions by electrocoagulation using an electrolytic cell with horizontal Al electrodes. Sepatartion efficiency and rate of separation were studied under different conditions of the following variables: 1-. Current density. 2-Temperature. 3- Emulsion pH. 4- Electrolyte (NaC1) concentration. 5- Electrode Dimensions (anode cylinder diameter). 6- Electrode orientation (horizontal vs. vertical). The study revealed the following results: 1- The present work has shown that the performance of a cell with horizontally oriented electrodes is superior to the traditional vertical electrode cell in conducting electrocoagulation of emulsions. Indicators used to measure the cell performance were; separation efficiency, the rate constant of the demulsification process and the time required to reduce the oil content in the emulsion by 50% (t05). Separation efficiencies up to 99.9% were obtained which reduces the oil content in water to the safe level specified by the American EPA in a reasonable time. 2- The present results have shown that the electrocoagulation is an efficient way for treating oil-water emulsions where the oil content can be decreased below the permissible value. However, with sea water, a considcrablc demulsification takes place but the final oil concentration was above the maximum permissible value. i.e., in case of sea water electrocoagulation can be used in conjunction with another method such as ultrafiltration to demulsify completely oil-sea water emulsions.