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Physicochemical and biological characterization of leachate from the uncontrolled final disposal site in Tlapacoyan, Veracruz, Mexico
Authors: Miguel Ángel López Ramírez, Yasser Armando Aburto Gutiérrez, Keila Elena Ocaña Drouaillet, Castellanos Onorio Olaya Pirene, Fabiola Lango Reynoso, Maribel López Ramírez
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One of the main problems in Mexico is contamination by leachates that are produced in final waste disposal sites,
since they are highly toxic and damage the biota. This research focuses on determining the characteristics of the
leachate produced in the uncontrolled final disposal site in the municipality of Tlapacoyan, Veracruz (Mexico).
As a result, it was determined that the parameters that cause damage to the biota are total nitrogen (152.759 mg L-1),mercury (0.006mgL-1), cadmium (0.003mgL-1), copper (0.052mgL-1), chromium (0.0731mgL-1), nickel (0.0524mgL-1),
lead (0.005 mg L-1) and total coliforms (> 2 400 MPN), as they do not meet at least one of the national and international standards of maximum permissible limits. Likewise, it was determined that the leachate produced at this site is of the mature and poorly biodegradable type (BOD/COD=0.018), so that the typical or bioremediation methods are not recommended for its treatment.