Biorremediación de suelos contaminados con el insecticida cipermetrina

Pyrethroids are in the group of the most potent pesticides, with cypermethrin being a synthetic insecticide that is part of this group of pyrethroids and is considered moderately toxic. In the interests of eradicating these pests, they have been misused and uncontrolled, causing unintended effects. Pyrethroids are persistent in the soil, this generates an accumulation of the contaminant and their residues are incorporated in water sources most of the time by leaching causing damage to organisms that should not be involved, as well as different ecosystems with direct and indirect damage. This degree work aims to evaluate the possibility of employing a bioremediation process using microorganisms indigenous to the soil in productive activities where they involve the use of pesticides and achieve partial removal or total of this, improving soil qualities and the possibility of recovering its characteristics degraded by the use of the pesticide. So a soil sample with agricultural potential was taken to analyze its physical characteristics, chemical and biological before and after being exposed to different concentrations of the insecticide cypermethrin and then compare whether the initial soil conditions are favourable for an agricultural use, having assertive results. In addition, an ecotoxicity test was carried out to determine the toxicological level of the pesticide at different concentrations and additionally its lethal and subletal effect in lettuce seeds (Lactuca sativa L) was calculated. Isolation and identification of bacteria native to the soil sample is carried out in order to carry out the bioaugmentation process and that are responsible for the degradation of the contaminant present in the soil. According to the results obtained after these processes, it was found that the microbial population of the soil actually increased and the decrease in the concentration of the pollutant is noticeable, indicating the optimal capacity of these native soil bacteria to degrade pollutants

• Autores: Gómez Camargo, Ana María; Jaimes Parra, Dana Alejandra; Tovar Gallego, Laura Marcela
• Fecha de publicación: 2020
• Institución: Universidad de San Buenaventura
• Repositorio: Repositorio USB
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.usb.edu.co:10819/7881
• Acceso en línea: http://hdl.handle.net/10819/7881
• Palabra clave: Pesticidas; Plagas; Pesticides; Pests; Pollutants; Contaminantes; Suelos; Contaminación
• License: Atribución-NoComercial-SinDerivadas 2.5 Colombia