الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Wastewater from textile industry contains large quantities of organic compounds, inorganic salts and dyes. The release of colored wastewater in the environment is a considerablesource of pollution. Therefore, proper treatment methods of wastewater have increasingly drawing attention. The present study dealt with colour removal and chemical oxygen demand (COD)reduction using an array of PbIPb02 cylinders as anode and stainless steel screen as cathode in a batch recycle electrochemical unit for (acidic, direct, reactive, vat) dyes. Operating variables such as current density, initial dye concentration, NaCI concentration, pH, and solution flow rate were investigated. The results showed that the colour removal and COD reduction increase with the increase in current density, NaCI concentration, and solution flow rate while they decrease with the increase in pH and initial dye concentra~ion. Ene~gy consumption based on colour removal was found to range from 0.263484 to l31.3677 kWhlkg dye removed depending on the operating conditions. Finally, scanning electron microscopy (SEM) analysis was used to study the surface morphology of anode. The use of horizontally oriented array of lead cylinders as anode has the potential of acting also as a built-in heat transfer facility to control the cell temperature especially in case of large scale cells where heat generation could adversely affect the process via increasing lead solubility and decreasing the current efficiency of Ch generation.