Journal of the Korean Geo-Environmental Society ISSN:1598-0820(Print) 2714-1233(Online) 한국지반환경공학회 논문집

This study investigated on the photolytic degradation of Triclosan by E-beam process. The optimization of process was investigated during a series of batch experiments by design of experiments(DOEs). The DOE was one of the statistical application that was used for designed the response surface to determine the effects of each parameters. The responses were applied as removal rate of Triclosan(%, Y1) and TOC removal rate(%, Y2). Two independent variables were concentration of Triclosan and irradiation intensity that were designed as “x1” and irradiation intensity was designed as “x2”. The regression equation in coded parameter between the Triclosan removal efficiencies(%) and TOC removal efficiencies(%) was Y1 = 63 -12.4335x1 + 15.1835x2 + 5.8125x1 2 - 5.6875x2 2 - 0.75x1x2 (R2 = 95.1%, R2 (Adj) = 91.7%) and Y2 = 46 - 8.8462x1 + 11.7175x2 -0.75x1 2 - 6.25x2 2 (R2 = 98.7%, R2 (Adj) = 97.7%), respectively. The model predictions agreed well with the experimentally observed results R2 and R2 (Adj) over 90% within both of Y1 and Y2. This result shows that the regression model express well about the effects of parameters on E-beam process and the statistical method was successfully applied.