Propuesta metodológica para la remediación de aguas contaminadas con mercurio mediante fotocatálisis

The greatest adverse effect of environmental mercury pollution is reflected in the water matrix, because it accumulated in aquatic organisms thus transcending trophic chains, generating bioconcentration and biomagnification, causing negative effects on human health and ecosystems. This work is based on a methodological proposal for mercury remediation present in synthetic mercury-contaminated water using the method of photocatalysis. The methodology first proposes to perform an ecotoxicity test with Lactuca Sativa L. seeds to determine the lethal dose 50, then make a determination of two calibration curves differentiated only by the indicator used (KI or EDTA) and finally the photocatalytic process consisting of two phases, dark and light, with which you can find the concentration of TiO2  to use and the final mercury rate respectively. The results obtained by following this methodology reflect a decrease in the concentrations evaluated, going from an initial concentration of 0,0025 %P/V to 0,0020 %P/V in 50 minutes, which was the end time of the essay, that is, a 20% removal was obtained. Therefore, it can be concluded that, being a preliminary study, a good percentage of mercury removal was obtained

• Autores: Orrego Callejas, Tania Valentina; Correa Vélez, Angie Carolina
• Fecha de publicación: 2020
• Institución: Universidad de San Buenaventura
• Repositorio: Repositorio USB
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.usb.edu.co:10819/8191
• Acceso en línea: http://hdl.handle.net/10819/8191
• Palabra clave: Mercurio; Fotocatálisis; Ecotoxicidad; Curva de calibración; Aguas contaminadas; Photocatalysis; Mercury; Ecotoxicity; Calibration curve; Contaminated water; Contaminación del agua
• License: Atribución-NoComercial-SinDerivadas 2.5 Colombia