Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 181, Issue 1-3, Pages 729-735Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2010.05.073
Keywords
Electrochemical oxidation; landfill leachate; change of scale; pilot plant
Categories
Funding
- Spanish Ministry of Innovation and Science (MICINN)
- [CTM2006-00317]
- [CTQ2008-00690]
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Kinetic data regarding COD oxidation were measured in a laboratory scale cell and used to scale-up an electro-oxidation process for landfill leachate treatment by means of boron-doped diamond anodes. A pilot-scale reactor with a total BDD anode area of 1.05 m(2) was designed. Different electrode gaps in the laboratory and pilot plant cells resulted in dissimilar reactor hydrodynamics. Consequently, generalised dimensionless correlations concerning mass transfer were developed in order to define the mass transfer conditions in both electrochemical systems. These correlations were then used in the design equations to validate the scale-up procedure. A series of experiments with biologically pre-treated landfill leachate were done to accomplish this goal. The evolution of ammonia and COD concentration could be well predicted. (C) 2010 Elsevier B.V. All rights reserved.
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