Optimizing Reducing Agent Concentration for Dye Degradation

The effects of the concentration of the reducing agent (NaBH₄) on the degradation of crystal violet and methylene blue were investigated. To determine the optimum concentration of reducing agent for the best catalytic degradation, various concentrations of reducing agent were tested from 0.01 to 0.20 M. The catalyst dose was fixed at 0.025 gm/25 mL for crystal violet and 0.075 gm/25 mL for methylene blue, while the initial concentrations of crystal violet and methylene blue were fixed at 20 ppm and 15 ppm, respectively. Prior to conducting these experiments, other parameters were optimized and applied.