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- Title
Efficiency of Combined Processes Coagulation/Solar Photo Fenton in the Treatment of Landfill Leachate.
- Authors
Rebolledo, Liceth P.; Arana, Victoria A.; Trilleras, Jorge; Barros, Gustavo E.; González-Solano, Arturo J.; Maury-Ardila, Henry
- Abstract
The combined coagulation-solar photo Fenton treatment of leachate from the sanitary landfill located in Atlantico-Colombia was investigated. Firstly, the efficiency of two alternative combined treatments for the reduction of chemical oxygen demand in leachate was assessed, coagulation with poly-aluminum chloride followed by solar photo-Fenton process (Treatment 1) and coagulation with FeCl3·6H2O followed by ferrioxalate-induced solar photo-Fenton process (Treatment 2). Afterwards, treatments 1 and 2 were compared with the treatment currently used in the sanitary landfill (only coagulation with poly-aluminum chloride), in terms of efficiency and costs. An optimization study of alternative treatments was performed combining central-composite experimental design and response surface methodology. The optimum conditions resulted in a chemical oxygen demand reduction of 73 % and 80 % for Treatment 1 and 2, respectively. Both alternative treatments for the leachate are more efficient than the treatment currently used in the sanitary landfill (chemical oxygen demand reduction of 20 %). In terms of costs, treatment 1 would be the most competitive to implement in the sanitary landfill, since this would have an increase of 13.3 % in the total unitary cost compared to an increase of 39.5 % of treatment 2.
- Subjects
LANDFILL management; SANITARY landfills; THERAPEUTICS; LEACHATE; COAGULATION; LANDFILLS
- Publication
Water (20734441), 2019, Vol 11, Issue 7, p1351
- ISSN
2073-4441
- Publication type
Article
- DOI
10.3390/w11071351