Degradation of Dyes (Methylene Blue and Congo Red Dye) Using Phosphomolybdic Acid

The phosphomolybdic acid (PMA) has been used as an adsorbent for the removal of dyes (Methylene blue and Congo red dye) from synthetic aqueous solution. Different factors of the adsorbent, like, contact time, pH of the sorption medium, concentration of the dye solution, were investigated by the batch sorption experiment. The adsorption equilibrium data was best fitted by the Langmuir isotherm model. The maximum adsorption capacities were found to be 99.6, 99.4 and 1g of phosphomolybdic acid for dyes (Methylene blue and Congo red dye).