2 research outputs found
REMOVAL OF DIRECT BLUE DYE IN TEXTILEWASTEWATER EFFLUENT BY ELECTROCOAGULATION
 Removal of direct blue dye by electrocoagulation method has been investigated using aluminum
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electrode in a bench-scale electrochemical system. Current density, NaCl concentration,
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electrocoagulation time, and dye concentration has been studied as effecting parameters in color
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removal efficiency. Increasing of current density will increase the color removal efficiency and
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energy consumption as well. While increasing NaCl concentration increase the color removal
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efficiency but it decrease energy consumption. High dye concentration is needed for extra
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electrocaogolation time to reach the same efficiency that obtained with low dye concentration .With
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current applied 0.35 amps. and NaCl concentration of 2 g/l more than 93% efficiency achieved in
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14 min. of electrocaogolation time.
ELECTROCHEMICAL DECOLORIZATION OF DIRECT BLACK TEXTILE DYE WASTEWATER
Electrochemical decolorization of direct black textile dye was studied in the presence of sodium
hydroxide (NaCl). Electrochemical cell occupy about 1 liter of working electrolyte supplied with graphite
electrodes for both anode and cathode was constructed for this purpose. Decolorization percent, treatment time, power consumption, and pH were studied as a function of the applied voltage and salt concentration. Results show that decolorization increase with increasing salt concentration and applied voltage. Best decolorization of 86% can be achieved after 17 min at 7 volt and 5 g/l salt concentration. Further decolorization can be achieved but this will be accompanied with a sharp increase in power consumption. No significant decrease in pH value was observed at the end of each experiment