DEGRADATION OF BISPHENOL A USING ADVANCED OXIDATION PROCESSES

摘要

The aim of this study is to investigate the effectiveness of different oxidation methods including UVC, UVC/H_2O_2 and O_3 in degrading Bisphenol A (BPA) in water and treated wastewater samples. The effective parameters for each process were identified and further investigated along with the effect of inorganic and organic matter present in secondary treated wastewater. The reaction kinetics of each process was obtained in both spiked water and secondary treated wastewater samples. The results showed the degradation is slow when only UV is used but it improved significantly upon addition of hydrogen peroxide to the solution. The highest degradation rates were measured with ozone (O_3) bubbling in the solution. By applying an ozone flow rate of 1 L/min, the first order rate constant was found to be 1.2 min~(-1) and 1.1 min~(-1) in water and treated wastewater, respectively. After 3 minutes of reaction, no BPA was detected in solution. The degradation mechanism of each of the three processes has also been proposed.