The variations of PH and conductivity with time during the electrocoagulation process
Abstract
This study represents the performance of an electrocoagulation process employing a clear plastic reactor with holes in the aluminum plate electrodes to allow water to pass between the plates in a totoidal pattern. Regarding the efficiency of the process, the most important factors that affect the electrocoagulation process (EC) are electrical conductivity and pH. Continuous flow was carried out to evaluate the effects of different parameters on the pH, and conductivity variations. Two types of water are used in this study to investigate the use of electrocoagulation (EC): river water and discarded reverse osmosis system water. Using bipolar and monopolar aluminum electrodes, the factors that were examined were the flow rate (600, 1000 L/h) and the number of electrodes (2, 4). The pH showed oscillations throughout the various experimental circumstances for concentrated water, while for river water, the variation of pH and conductivity was stable. As for pH values, for river water, the pH increases and conductivity decreases for all experiments except for the 600L/h flow rate with reversing polarity experiment and employing two plates where the pH decreases and conductivity increases. For concentrated water, it is obvious through the experiments that the variation of pH and conductivity show unstable responses like that results from using river water because of the higher conductivity of the solution which leads to higher chemical reactions to occur during the experiments.
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