OPTIMIZATIO OF ELECTROCHEMICAL PROCESS FOR REMOVING PHENOL FROM AQUOUCE BY TAGUCHI MODEL

Contamination of industrial wastewater with phenol as the priority pollutant is the most serious environmental problem in several countries worldwide. Discharging of industrial effluent with phenol concentration of 100-1000 mg/l in to any natural water is considered as toxic substance to aquatic organisms. The aim of this applied-analytical study is to investigate phenol removal from urban drinking water using batch reactor electrochemical. Various operating variables are tested for their effects on phenol removal; these include current density, electrodes material, pH, and time. Phenol removal efficiency is examined in different operating cases of the variables current density (1 to 8 mA/cm2), electrodes material (aluminium, copper, iron, steel, and zinc), pH (4 to 10), and time (20 to 60 min). Phenol is determined according to procedure detailed in standard methods. AS-AS as anodecathode electrodes produce the mean of the lowest phenol removal (0.1%), while Zn-Cu as anodecathode electrodes produce the mean of the highest phenol removal (100%) at similar experimental conditions. Batch experiments show that the maximum phenol removal is obtained using zinc-copperas the anode-cathode electrode arrangement. The increase in current density from 1 to 8 mA / cm2 in atoptimum electrode and pH increases phenol removal from 58 to 100%. The increase in time from 20 to 60 min at optimum electrode and pH increases phenol removal from 34 to 100%. The findings indicate that phenol removal efficiency is increased with increasing current density, electrolysis time, and pH. Thus, batch experiments indicates that the electrochemical reactor can be efficient in removing phenol from drinking water and may be considered as a promising technology for treating phenol-polluted drinking water.

کلیدواژه ها:

Drinking water ، Electrochemical ، Electrolysis ، Phenol ، Taguchi modle