Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/25723

TitleFenton’s oxidation as post-treatment of a mature municipal landfill leachate
Author(s)Cortez, Susana
Teixeira, P.
Oliveira, Rosário
Mota, M.
KeywordsFenton’s oxidation
Mature landfill leachate
Recalcitrant organic matter
Issue date2009
PublisherWorld Academy of Science, Engineering and Technology (WASET)
JournalWorld Academy of Science, Engineering and Technology
Abstract(s)Mature landfill leachates contain some macromolecular organic substances that are resistant to biological degradation. Recently, Fenton’s oxidation has been investigated for chemical treatment or pre-treatment of mature landfill leachates. The aim of this study was to reduce the recalcitrant organic load still remaining after the complete treatment of a mature landfill leachate by Fenton’s oxidation post-treatment. The effect of various parameters such as H2O2 to Fe2+ molar ratio, dosage of Fe2+ reagent, initial pH, reaction time and initial chemical oxygen demand (COD) strength, that have an important role on the oxidation, was analysed. A molar ratio H2O2/Fe2+ = 3, a Fe2+ dosage of 4 mmol·L−1, pH 3, and a reaction time of 40 min were found to achieve better oxidation performances. At these favorable conditions, COD removal efficiency was 60.9% and 31.1% for initial COD of 93 and 743 mg·L−1 respectively (diluted and non diluted leachate). Fenton’s oxidation also presented good results for color removal. In spite of being extremely difficult to treat this leachate, the above results seem rather encouraging on the application of Fenton’s oxidation.
TypeArticle
URIhttp://hdl.handle.net/1822/25723
DOI10.5281/zenodo.1055902
ISSN2010-376X
e-ISSN2010-3778
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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