Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 188, Issue 1-3, Pages 261-268Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2011.01.097
Keywords
Landfill leachate; Electro-oxidation; Ammonia removal; COD removal; GC-MS; Box-Behnken method
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Funding
- SRF for ROCS, SEM, China [[2001]498]
- China Hubei Provincial Science and Technology Department [2003AA307B01]
- Wuhan Science and Technology Bureau, China [201060723313]
- National High-Tech R&D Program (863 Program) of China [2008AA06Z332]
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Box-Behnken statistical experiment design and response surface methodology were used to investigate electrochemical oxidation of mature landfill leachate pretreated by sequencing batch reactor (SBR). Titanium coated with ruthenium dioxide (RuO2) and iridium dioxide (IrO2) was used as the anode in this study. The variables included current density, inter-electrode gap and reaction time. Response factors were ammonia nitrogen removal efficiency and COD removal efficiency. The response surface methodology models were derived based on the results. The predicted values calculated with the model equations were very close to the experimental values and the models were highly significant. The organic components before and after electrochemical oxidation were determined by GC-MS. (C) 2011 Elsevier B.V. All rights reserved.
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