title: Determination of organic compounds in landfill leachates treated by Fenton-Adsorption.
abstract: The objective of this study was to identify the organic compounds removed from the leachate when treated with Fenton-Adsorption by gas chromatography coupled to mass spectrometry (GC-MS) in order to identify toxic compounds that could be harmful for the environment or human health. The physicochemical characterization of the raw leachate was carried out before and after the Fenton-Adsorption process. The effluent from each stage of this process was characterized: pH, Biological Oxygen Demand (BOD(5)), Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Total Carbon (TC), Inorganic Carbon (IC), Total Solids (TS), Total Suspended Solids (TSS) and Color. The organic compounds were determined by GC-MS. The removal of COD and color reached over 99% in compliance with the Mexican Standard NOM-001-SEMARNAT-1996, which establishes the maximum permissible limits for contaminants present in wastewater discharges to water and national goods. The chromatographic analysis from the Fenton-Adsorption effluent proved that this treatment removed more than 98% of the organic compounds present in the initial sample. The mono (2-ethylhexyl) ester 1,2-benzenedicarboxylic acid persisted, although it is not considered as toxic compound by the NOM-052-SEMARNAT-2005. Therefore, the treated effluent can be safely disposed of into the environment.
authors.affiliation: Faculty of Engineering, Autonomous University of Yucatan. Av. Industrias No Contaminantes por Periférico Norte s/n, Mérida, Yucatán, Mexico.
authors.forename: Dorian R
authors.initials: DR
authors.lastname: Ramírez-Sosa
authors.forename: Elba R
authors.initials: ER
authors.lastname: Castillo-Borges
authors.forename: Roger I
authors.initials: RI
authors.lastname: Méndez-Novelo
authors.forename: María R
authors.initials: MR
authors.lastname: Sauri-Riancho
authors.forename: Manuel
authors.initials: M
authors.lastname: Barceló-Quintal
authors.forename: José M
authors.initials: JM
authors.lastname: Marrufo-Gómez
mesh_terms: D000327:Adsorption; D004784:Environmental Monitoring; D008401:Gas Chromatography-Mass Spectrometry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008800:Mexico; D009930:Organic Chemicals / Q000032:analysis* / Q000737:chemistry*; D012037:Refuse Disposal; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry*; D018508:Water Purification
chemical_list: C045076:Fenton's reagent; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron