Preliminary Results of Spadns Treatment by Electroflocculation With Iron Electrodes

Abstract

Objective: The objective of this work is to present the results obtained from the removal of color from SPADNS effluent by electroflocculation treatment.   Theoretical framework: The dyes used for analysis methods such as SPADNS are released into nature without any treatment, even in low concentrations affecting the aesthetics of rivers. Dyes are considered common pollutants in effluents and color removal is a major challenge for the industry.   Method: Iron nails (Fe) were used as cathode and anode, dipped in a sodium chloride solution with the SPADNS effluent, connected to an ATX (advanced technology extended) computer source at a voltage of 12 volts (v) with maximum current of 15 amps (a). Mass balance of the nails used was carried out to determine the mass dissolved in the effluent. After dissolving the iron, the pH is corrected.   Results and conclusion: It was determined that the samples achieved 98% color removal. The results indicate a slight increase in turbidity, within the maximum allowed value. The use of Fe as an electrode is economically viable. The use of sodium chloride to pass current did not prove to be satisfactory.   Implications of the research: The use of simple processes such as electroflocculation can use renewable energy sources, low-cost materials, greater automation in the removal of environmental pollutants.   Originality/value: The use of chemicals is drastically reduced compared to the conventional process. The gases generated in the treatment help to drag the particles to the surface just like a floater using dissolved air.