Optimization of 4-chlorophenol degradation through ozonation process: Response Surface Methodology (RSM)

Amir Masoud Yaseri¹ Mohsen Taghavijeloudar²

1) Master student of Environment Engineering, Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran
2) PhD of Environment Engineering, Department of Civil and Environmental Engineering, Seoul National University, 151‑744 Seoul, South Korea

Publication : 2nd International Congress on Civil Engineering, Architecture, Building Materials and Environment(caucong.com/2nd)
Abstract :
4-Chlorophenol (4-CP) as persistent organic pollutant (POP) is listed as one of the top toxic pollutants by the U.S. Environmental Protection Agency (USEPA). Generally, 4-CP has been found in the wastewater from different industrial effluents. Therefore, efficient removal of 4-CP from wastewater has become one of the main target for researchers in the area of environmental management. In this research, degradation of 4-CP through ozonation process was optimized using Response Surface Methodology (RSM). Reaction time, pH, 4-CP concentration and O3 flow rate were considered as main variables. The results revealed that reaction time and O3 flow rate have significant effect on 4-CP removal rate through ozonation process. In contrast, initial concentration of 4-CP and pH showed less effect of 4-CP removal. According to RSM model, optimum conditions was observed at time: 30 min, pH: 11, 4-CP concentration: 35 mg/L and ozonation flow rate: 5 g/h, which maximum 4-CP removal of 93.52% was achieved.
Keywords : 4-Chlorophenol; Ozonation; RSM; Optimization; Wastewater treatment