Degradation of thiacloprid via UV/Fe2+/ persulfate system: Optimization using response surface methodology

Ultraviolet synergic ferrous based catalysts were tested to achieve effective degradation of thiacloprid (THIA) from wastewater. In this study, the effect of degradation of THIA were conducted on the different degradation parameters of various of concentration of synergic ferrous, concentration of persulfate (PS), pH value and UV intensity. Central Composite Design (CCD) method was used to establish a mathematical model between degradation parameters and the removal rate of THIA. The results showed that UV/Fe2+/PS system could result in 100% of degradation rate of THIA when using 58.133W of UV intensity, 0.318mmol/L of ferrous irons, 0.544mmol/L of PS and 3.054 of pH. It was in a good agreement with the experimental results (98.4%) which suggested that response surface methodology can be well used to optimize the degradation of THIA in the UV/Fe2+/PS system. © 2021, Editorial Board of China Environmental Science. All right reserved.