Fragmentación de glifosato mediante oxidación húmeda catalítica con nanomateriales mesoporosos
Date
2018
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Abstract
El uso excesivo de agroquímicos ha aumentado la contaminación del agua en los últimos años. El herbicida
glifosato posee gran solubilidad en agua, esto facilita su difusión a aguas subterráneas. Los procesos
avanzados de oxidación, entre ellos “oxidación húmeda”, son propuestos como una alternativa de
degradación de glifosato en medios acuosos. Los nanomateriales mesoporosos sustituidos con heteroátomos,
aparecen como soportes catalíticos muy prometedores. Así, en este trabajo, se plantea la síntesis de sólidos
mesoporosos modificados con hierro, boro y aluminio para degradar soluciones acuosas de glifosato
mediante procesos de oxidación húmeda catalítica con aire. Los resultados obtenidos fueron una degradación
de herbicida del 80% utilizando el material con Fe, mientras que con B y Al no se produjo degradación de
glifosato. Así, mediante el uso de catalizadores mesoporosos con Fe y sumado a condiciones de reacción
suaves, se puede lograr un menor impacto ambiental y mayor sustentabilidad en el proceso de degradación
de glifosato.
Water pollution has increased in recent years due to the excessive use of agrochemicals. Glyphosate the herbicide has great solubility in water, which facilitates its diffusion to groundwater. Advanced oxidation processes, including "wet oxidation", are proposed as an alternative to degradation of glyphosate in aqueous media. Mesoporous nanomaterials substituted with heteroatoms appear as very promising catalytic supports. Thus, in this work, the synthesis of modified mesoporous solids with iron, boron and aluminum is proposed to degrade aqueous solutions with glyphosate by means of catalytic wet oxidation processes with air. The results obtained were a degradation of glyphosate of 80% using the material with Fe, while with B and Al there was no degradation of the herbicide. Thus, a lower environmental impact and greater sustainability can be achieved in the degradation process of glyphosate, through the use of mesoporous catalysts with Fe and added to mild reaction conditions.
Water pollution has increased in recent years due to the excessive use of agrochemicals. Glyphosate the herbicide has great solubility in water, which facilitates its diffusion to groundwater. Advanced oxidation processes, including "wet oxidation", are proposed as an alternative to degradation of glyphosate in aqueous media. Mesoporous nanomaterials substituted with heteroatoms appear as very promising catalytic supports. Thus, in this work, the synthesis of modified mesoporous solids with iron, boron and aluminum is proposed to degrade aqueous solutions with glyphosate by means of catalytic wet oxidation processes with air. The results obtained were a degradation of glyphosate of 80% using the material with Fe, while with B and Al there was no degradation of the herbicide. Thus, a lower environmental impact and greater sustainability can be achieved in the degradation process of glyphosate, through the use of mesoporous catalysts with Fe and added to mild reaction conditions.
Description
Keywords
Degradación glifosato, Oxidación húmeda catalítica con aire, Sólidos mesoporosos
Citation
XXVI Congreso Iberoamericano de Catálisis
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