AGRO 32 |
| Contamination of natural water and soil inevitably occurs due to the large usage of agricultural chemicals in agricultural or industrial activities, either as the direct consequence of the application process or as the result of accidental spills or leakages during chemical transportation, storage or application. A Fenton reaction-based electrochemical method, anodic Fenton treatment (AFT), developed for destroying and detoxifying pesticides in the aqueous environment, was evaluated in this study for degradation of a widely-used pesticide, carbaryl, in an artificial soil slurry. The effect of initial pH, humic acid content of the artificial soil, initial carbaryl concentration, Fenton reagent (ferrous ion and hydrogen peroxide) delivery ratio, and soil/water ratio (w/v) were investigated and discussed. A kinetic model was developed to describe the treatment process, and it fits the experimental data quite well. The results indicate that soil organic matter (SOM) content is the key factor that slows down pesticide degradation, most probably due to pH buffering and adsorption capacity of soil humic substances. The AFT method is a promising technology to remediate pesticide-contaminated soil. |
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Agrochemical Education Awards For Graduate Student Travel
8:00 AM-11:00 AM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Agrochemicals |