Figure 8

Effect of pH on the decolorization of AO7. The pH was adjusted to 8 and 9 using borax and HCl buffer mixture and the pH was adjusted to 10.0 using NaHCO3 and NaOH mixture. Phosphates were used to adjust the pH to 7 and 11.
Effect of pH on the decolorization of AO7. The pH was adjusted to 8 and 9 using borax and HCl buffer mixture and the pH was adjusted to 10.0 using NaHCO3 and NaOH mixture. Phosphates were used to adjust the pH to 7 and 11.