الفهرس 
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Abstract
The present work aims to investigate the performance of an electrochemical batch agitated vessel in removal of Cr+6 and Pb +2 separately from synthetic wastewater by Electrocoagulation.
The batch agitated vessel consist of 45° pitched four multi layer vanes made of Aluminum mesh screen as anode and a circular horizontal solid Aluminum disc
cathode
The performance of present agitated vessel has been-investigated in relation to the following parameters:
Effect of electrolysis time.
Effect of different current densities (C.D).
Effect of different NaCl concentrations.
Effect of different initial concentration of Cr+6 &Pb +2ions.
Effect of (pH).
Effect of speed of rotation.
Effect of distance between the two electrodes.
The study revealed the following results;
1. As the C.D increases the % removal increases for the two metal ions.
The effect ofNaCl concentration has two opposing effects on EC of the two metal ions the optimum NaCl concentration was 4g/l for the metal ions.
As the initial concentration of metal ion increases % removal decreases.
The pH of the metal ion solutions is the optimum value and no need for pH adjustment.