[Evaluation of Fenton process for the treatment of sanitary landfill leachate with Response Surface Methodology].
Response Surface Methodology (RSM) was employed to investigate the effect of TOC ratio of high molecular weight organic matter (HMWOM) to low molecular weight organic matter (LMWOM), the LMWOM concentration and hydrogen peroxide to ferrous ion molar ratio on COD removal during the treatment of sanitary landfill leachate with Fenton reagents. The high and low levels of HMWOM/LMWOM, the LMWOM concentration and H2O2/Fe2+ were from 14 to 38, 975 to 3000 mg/L, and 1.75 to 4.00 respectively. Using the software of Design--Expert 5, a response surface quadratic model in terms of actual factors was obtained based on the experimental data, and COD removal contour plots were derived from the model accordingly. It showed that COD removal increased with the increase of HMWOM to LMWOM ratio, but decreased with increasing LMWOM concentration. There existed an optimal hydrogen peroxide to ferrous ion molar ratio so that the highest COD removal efficiency could be achieved.
Zhang
Hui
H
Department of Environmental Science and Engineering, Wuhan University, Wuhan 430072, China.
Huang
Chin-Pao
CP
D004787:Environmental Pollution / Q000517:prevention & control*; D006861:Hydrogen Peroxide / Q000494:pharmacology*; D007501:Iron / Q000494:pharmacology*; D012037:Refuse Disposal; D012989:Soil Pollutants / Q000032:analysis; D014872:Water Movements; D014873:Water Pollutants / Q000032:analysis; D018508:Water Purification / Q000379:methods*
C045076:Fenton's reagent; D012989:Soil Pollutants; D014873:Water Pollutants; D006861:Hydrogen Peroxide; D007501:Iron