Bergendahl, John Andrew
Pesticide application to crops has the potential to contaminate drinking water sources. This goal of this project was to evaluate the efficiency of 5 treatment methods at reducing pesticide concentrations in water: activated carbon adsorption, chlorination with hypochlorite, ultraviolet (UV) light degradation, UV degradation with the addition of hydrogen peroxide (H2O2), ozonation and oxidation with ferrate. Pesticides studied were atrazine, alachlor and glyphosate. Most successful treatments were activated carbon adsorption and UV+H2O2. Less successful were ozonation, chlorination and UV without H2O2. Success of treatment methods was reflective of their oxidative potentials. Ferrate results could not be quantified. Formation of byproducts through ozonation and UV photolysis was observed.
Worcester Polytechnic Institute
Major Qualifying Project
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Civil and Environmental Engineering