In the present work, the electrochemical study has been carried out on the derivatives of azo and nitro dyes for Ortho-Phenylenediamine (OPD) predominantly used in colorants. The results of the electrochemical study are assessed in terms of decolorisation and reduction in toxicity. Kinetics of decolorisation was monitored and resulted after 15 minutes. This work also comparatively analyzes the decoloration of dyes at pH 10 and pH 6. The Spectrophotometry measures, energy of a substance absorbs at varying wavelengths of light. Transmittance at different wavelength shows the maximum absorbance at 290 nm and also the transparency of the material is maximum. The maximum absorbance is recorded at higher pH 10 for 10 ppm absorbance percentage is 0.329 for 30 minutes. For pH 6 at 290 nm for 10 ppm the percentage transmittance is 51.3 and absorbance percentage is 0.290. Activated Charcoal is best fit adsorbents used for removal of toxic dyes as well as for environmental pollution reduction.