|Student Name:||Maj Edward Walters|
|Thesis:||FATE OF MALATHION IN AN ACTIVATED SLUDGEMUNICIPAL WASTEWATER TREATMENT SYSTEM|
|Location:||Bldg 640, Room 343|
|Date & Time:||02/25/2013 at 1000|
|Abstract:|| Organophosphate compounds are used as pesticides and in chemical warfare agents such as nerve agents. VX (O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioate) is the most toxic and environmentally persistent of these nerve agents. This research examined the fate of malathion, a pesticide and surrogate of VX (O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioate), in bench-scale activated sludge sequencing batch reactors. Sorption kinetics and sorption equilibrium isotherm experiments that malathion did not appreciable sorb to the biomass. Approximately 90% of the initial 4.25 mg L-1 malathion concentration degraded primarily via heterotrophic activity. Sorption was not a statistically important removal mechanism.