naa a22 4500 510821022 CHVBK 20180411083532.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11814-013-0002-2 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0002-2 Optimization of Fenton process for refinery wastewater biodegradability augmentation [Elektronische Daten] [Syukriyah Ishak, Amirhossein Malakahmad] The Fenton process was used to increase the biodegradability of refinery wastewater. Initially, effects of reaction time, H2O2/COD and H2O2/Fe2+ molar ratios were investigated and biodegradability of wastewater was determined in terms of the BOD5/COD ratio. Preliminary results showed that the Fenton process was able to improve wastewater biodegradability from 0.27 to 0.43. Subsequently, the process was optimized by using response surface methodology based on a five-level central composite design. Adequacy and significance of results were analyzed in analysis of variance. The quadratic model was found to be significant to give less than 0.05 probability of error. The model was fit with data based on insignificant of lack-of-fit test at values of 0.93. The high R2 and Adj.R2 (0.95 and 0.91) indicates satisfactory adjustment of quadratic model to experimental data. Based on optimized conditions, wastewater biodegradability improved to 0.44 via H2O2/COD and H2O2/Fe2+ molar ratios of 2.8 and 4 within 71 minutes reaction time. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Advanced Oxidation Process nationallicence Recalcitrant Discharges nationallicence BOD5/COD Ratio nationallicence Ishak Syukriyah Civil Engineering Department, Faculty of Engineering, Universiti Teknologi PETRONAS, 31750, Tronoh, Perak, Malaysia aut Malakahmad Amirhossein Civil Engineering Department, Faculty of Engineering, Universiti Teknologi PETRONAS, 31750, Tronoh, Perak, Malaysia aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/5(2013-05-01), 1083-1090 0256-1115 30:5<1083 2013 30 11814 https://doi.org/10.1007/s11814-013-0002-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0002-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ishak Syukriyah Civil Engineering Department, Faculty of Engineering, Universiti Teknologi PETRONAS, 31750, Tronoh, Perak, Malaysia aut NATIONALLICENCE 700 1- Malakahmad Amirhossein Civil Engineering Department, Faculty of Engineering, Universiti Teknologi PETRONAS, 31750, Tronoh, Perak, Malaysia aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/5(2013-05-01), 1083-1090 0256-1115 30:5<1083 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer