Statistical optimization of process parameters for landfill leachate treatment using electro-Fenton technique

被引：224
|
作者：
Mohajeri, Soraya [1 ]
Aziz, Hamidi Abdul [1 ]
Isa, Mohamed Hasnain [2 ]
Zahed, Mohammad Ali [1 ]
Adlan, Mohd. Nordin [1 ]
机构：
[1] Univ Sains Malaysia, Sch Civil Engn, Nibong Tebal 14300, Penang, Malaysia
[2] Univ Teknol PETRONAS, Dept Civil Engn, Tronoh 31750, Perak, Malaysia
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 176卷 / 1-3期
关键词：
Semi-aerobic landfill leachate; Electro-Fenton; COD; Color; Response surface methodology; BORON-DOPED DIAMOND; WASTE-WATER; ADVANCED OXIDATION; ELECTROCHEMICAL TREATMENT; DESIGN APPROACH; REMOVAL; COAGULATION; MINERALIZATION; REAGENT; COLOR;
D O I：
10.1016/j.jhazmat.2009.11.099
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Mature landfill leachate is typically non-biodegradable and contains high concentration of refractory organics. The aim of this research was to optimize operating parameters in electro-Fenton process, for the removal of recalcitrant organics from semi-aerobic landfill leachate using response surface methodology (RSM). Effectiveness of important process parameters H2O2/Fe2+ molar ratio, current density, pH and reaction time were determined, optimized and modeled successfully. Significant quadratic polynomial models were obtained (R-2 = 0.9972 and 0.9984 for COD and color removals, respectively). Numerical optimization based on desirability function were employed; in a 43 min trial 94.07% of COD and 95.83% of color were removed at pH 3 and H2O2/Fe2+ molar ratio 1, while current density was 49 mA/cm(2). The results indicate that E-Fenton process was an effective technology for semi-aerobic landfill leachate treatment. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：749 / 758
页数：10
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