A stock solution of rhodamine 6G (R6G) (125 mg L -1 ) was prepared. Commercial MnO2 particles were used in all experiments without any modification. For remediation experiments, 2500 µL of dye stock solution, 5 mg of commercial MnO2 particles, 5834 µL of water, 1666 µL of H2O2 (30%) and 200 µL of 5% SDS was used to make 10 mL of the total reaction mixture. The concentration of H2O2 and SDS in final reaction mixture was 5% (v/v) and 0.1% (v/v), respectively. To study the efficiency of dye removal at increasing levels of the contamination, the volume of the dye solution was increased to 3500 µL, 5500 µL, and 8134 µL by accordingly decreasing the quantity of pure water. The aliquots were taken after 2, 10 and 60 min intervals and diluted with water for visible light absorbance measurements. The effect of increased fuel concentration and quantity of MnO2 particles on decolorization was also studied.