Photocatalysis Applied to The Degradation of Pesticides (Profenofos) Dumped in Lake Tota
Abstract
The main objective of this work is to evaluate removal of a pesticide dumped in Lake Tota through photocatalytic degradation. The pollutant selected was Profenofos, active principle of Awake 500 EC, an agrochemical used in the long onion crops located around the lake. In the experimental phase, two photocatalytic degradation methods were used: suspension of TiO2 Degussa P25 catalyst and sol-gel immobilization of nto titanium nanoparticles in glass. The radiation source used in the laboratory and at the pilot was a uv lamp that simulates solar radiation. The effect of radiation time and photocatalyst mass on the concentration of the degraded compound was analyzed. For analytical determination of Profenofos, uv-Vis spectrophotometry and gas chromatography with n/p detector and electron capture were used. The photocatalyst supported was characterized with sem, x-rays and ir. Results obtained show high percentage of removal and reflect the potential that photocatalysis has in degrading agrochemicals present in the waters of Lake Tota.
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References
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