title: Optimization of photo-Fenton process of RO concentrated coking wastewater using response surface methodology.
abstract: The objective of this study was aimed at investigating the removal of chemical oxygen demand (COD) from reverse osmosis (RO) concentrated coking wastewater by the photo-Fenton process. The optimum extraction conditions for the photo-Fenton process by Box-Behnken design (BBD) and response surface methodology (RSM) to establish a predictive polynomial quadratic model were discussed based on a single factor test. Optimized parameters validated by the analysis of variances (ANOVA) were found to be H(2)O(2) concentration of 345.2 mg/L, pH value of 4.1 and reaction time of 103.5 minutes under ultraviolet irradiation. The experimental results of the COD removal under the optimized conditions presented better agreement with the predicted values with deviation error of 3.2%. The results confirmed that RSM based on BBD was a suitable method to optimize the operating conditions of RO concentrated coking wastewater.
authors: School of Power and Mechanical Engineering, Wuhan University, Wuhan, China. happyhqz@163.com
authors: Zhang
authors: Z
authors: Huiqing
authors: Ye
authors: Y
authors: Chunsong
authors: Zhang
authors: Z
authors: Xian
authors: Yang
authors: Y
authors: Fan
authors: Yang
authors: Y
authors: Jun
authors: Zhou
authors: Z
authors: Wei
mesh_terms: D057919:Biological Oxygen Demand Analysis; D003077:Coke; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000737:chemistry; D009995:Osmosis; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000528:radiation effects; D018508:Water Purification
chemical_list: D003077:Coke; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron