Open AccessTreatment of Sanitary Landfill Leachate by Photo-Fenton Process: Effect of the Matrix Composition
Author(s) -
Jader O. Silva,
Valdislaine M. Silva,
Vicelma Luiz Cardoso,
Antônio E.H. Machado,
Alam G. Trovó
Publication year - 2016
Publication title -
journal of the brazilian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.337
H-Index - 70
eISSN - 1678-4790
pISSN - 0103-5053
DOI - 10.5935/0103-5053.20160120
Subject(s) - leachate , composition (language) , environmental science , environmental chemistry , process (computing) , waste management , matrix (chemical analysis) , chemistry , engineering , computer science , chromatography , philosophy , linguistics , operating system
In this study it was evaluated the role of the composition of sanitary landfill leachate on the removal of dissolved organic carbon (DOC) by photo-Fenton process. The composition of the matrix (high turbidity and color, as well as presence of inorganic ions sulfate and chloride) does not reduce the efficiency of DOC removal by photo-Fenton reactions, but influences significantly the reaction time and consumption of H2O2. An expressive increase in the efficiency of DOC removal occurred for concentrations of Fe2+ between 50 and 100 mg L-1, remaining constant in the range between 100 and 200 mg L-1. On the other hand, the pre-treatment of this effluent by coagulation-flocculation before the photo-Fenton process is recommended, since a similar efficiency of DOC removal, between 70 and 77%, was achieved using only 17% of the time and 7% of H2O2 necessary for the treatment of raw leachate treatment.
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