Comparison of granular activated carbon bio-sorption and advanced oxidation processes in the treatment of leachate effluent

被引:13
|
作者
Abdul, Javeed Mohammed [1 ]
Vigneswaran, Saravanamuthu [1 ]
Shon, Ho Kyong [1 ]
Nathaporn, Areerachakul [2 ]
Kandasamy, Jaya [1 ]
机构
[1] Univ Technol Sydney, Fac Engn, Sydney, NSW 2007, Australia
[2] Rajamangala Univ Technol, Thanyaburi, Pathumtani, Thailand
关键词
Landfill Leachate; Bio-sorption; Advanced Oxidation; Photocatalysis; COAGULATION-FLOCCULATION PRETREATMENT; LANDFILL LEACHATE; ADSORPTION; WATERS;
D O I
10.1007/s11814-009-0121-y
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Landfill leachate is a toxic effluent of a decomposing landfill that is produced when rainwater percolates through the landfill leaching out contaminants and pollutants. Untreated leachate is a potential source for the contamination of soil, surface and ground water. In this study, the treatment processes such as granular activated carbon (GAC) adsorption/bio-sorption (batch), and advanced oxidation processes (AOP) viz. photocatalysis and Fenton's process were evaluated and compared by using synthetic landfill leachate (SLL) as a contaminant. TiO2 was used as a catalyst in photocatalysis, and Fenton's reagent (H2O2/Fe+2) was used in Fenton's process. The degradation of SLL effluent by the three above-mentioned processes was characterized by the % TOC removal. The % TOC removed by photocatalysis, Fenton oxidation and bio-sorption (which includes adsorption and biodegradation) was 30, 60 and 85%, respectively. The bio-sorption increased with the increasing GAC dose. The optimum dose of Fenton's reagent in advanced oxidation was 15 and 400 milli moles of Fe+2 and H2O2, respectively. The Fenton's process showed faster degradation kinetics compared to biodegradation and photocatalysis.
引用
收藏
页码:724 / 730
页数:7
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