Parametric Study on the Decolorization of Aqueous Malachite Green Solution Using Electrolyzed Water

Author : Cereno, Shulamite Gallema
Major Adviser : Arocena, Rhebner E.
Committee Members : Capunitan, Jewel A.; Alfafara, Catalino G.
Year : 2019
Month : June
Type : Thesis
Degree: BS
Related Articles:
Keywords:
This manuscript can be accessed: Only after the consultation with author or adviser

Abstract

Aqueous malachite green solution was subjected to decolorization using electrolyzed water generated by Cawolo Disinfectant Generator CA-5. Full two-level factorial experimental design was employed to determine the effects of three factors – initial dye concentration, volume ratio of electrolyzed water to malachite green solution and reaction time on the amount of dye removed per amount of free chlorine. It was found that both the initial dye concentration and reaction time had positive significant effect on the decolorization of the aqueous malachite green solution. On the contrary, the volume ratio of electrolyzed water had negative significant effect on the decolorization of the solution. The electrolyzed water was able to remove malachite green solution per initial free chlorine present as high as 5.3012 mg Malachite Green removed/mg Initial Free Chlorine present. On the other hand, all factors were found to have inverse relationship with the percent decolorization. The electrolyzed water was able to significantly decolorize malachite green solution with percent decolorization as high as 99.54%. It was also found that the following combination results the highest amount of malachite green dye solution per free chlorines used: Initial dye solution of 500 ppm, 0.5:9.5 volume ratio of electrolyzed water to dye solution and reaction time of 2.5 hours.

---

Go back to Research Abstracts