Electrocoagulation for the removal of phenol and aldehyde contaminants from resin effluent.
This paper is a report on a study which aimed to investigate the effect of different current density, pH, temperature, and cathode-anode combination on the removal of phenol and aldehyde in two samples of actual resin effluent through the process of electrocoagulation using solar energy. Current density 60 A/m(2) and pH 6 proved to be the best levels for both contaminants. As for the effect of temperature, although the highest degree of phenol and aldehyde removal was achieved at 15 °C, 25 °C was taken to be the optimum temperature for economic reasons. The Fe-Fe combination of electrodes was found to be the best as it led to nearly 93% of phenol removal and approximately 95% of aldehyde removal. Also, the effect of electrode combination on energy consumption was studied. It was observed that the Fe-Fe combination consumed the least amount of energy (0.7-4.3 kWh/m(3) of wastewater in the case of phenol and 0.8-4 kWh/m(3) of wastewater in the case aldehyde). Moreover, the Fe-Fe combination brought about the best results in terms of chemical oxygen demand removal: 93% in both cases. Finally, an economic analysis was performed for the electrocoagulation process.
Department of Environmental Research, Institute for Color Science and Technology, P.O. Box: 16765-654, Tehran, Iran E-mail: me.olya2@gmail.com; olya-me@icrc.ac.ir.
Mohammad Ebrahim
ME
Olya
Azam
A
Pirkarami
D000447:Aldehydes / Q000032:analysis / Q000737:chemistry; D004563:Electrochemistry / Q000191:economics / Q000295:instrumentation / Q000379:methods*; D010636:Phenols / Q000032:analysis / Q000737:chemistry; D012993:Solar Energy; D014865:Waste Disposal, Fluid / Q000191:economics / Q000295:instrumentation / Q000379:methods*; D062065:Wastewater / Q000032:analysis / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*
D000447:Aldehydes; D010636:Phenols; D062065:Wastewater; D014874:Water Pollutants, Chemical