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UNLABELLED Trichloramine (NCl(3)) is recognized as an irritant of the human respiratory system and other tissues. Processes that lead to volatilization from the liquid phase allow for human exposure to gas-phase NCl(3) in swimming pool settings. The dynamics of these processes are not well defined. A N,N-diethyl-p-phenylenediamine/potassium iodide(More)
Pools and spas are enjoyed throughout the world for exercise and relaxation. However, there are no previous studies on mutagenicity of disinfected spa (hot tub) waters or comprehensive identification of disinfection byproducts (DBPs) formed in spas. Using 28 water samples from seven sites, we report the first integrated mutagenicity and comprehensive(More)
Sun, Zhe. M.S.E., Purdue University, May 2014. Attached-Growth System for Nitrification at Low Temperature. Major Professor: Ernest R. Blatchley III. Lagoon systems are commonly used in small communities for domestic wastewater treatment. These systems are simple and economical to operate, and are often appropriate for use in areas where land costs are low.(More)
Bench-scale experiments were conducted with municipal wastewater effluent samples to examine the feasibility of combined application of ozone and ultraviolet (UV) radiation for disinfection. Effluent samples displayed rapid initial ozone demand, which promotes ozone transfer but diminishes disinfection efficacy. Ozone doses up to 10 mg/L yielded only trace(More)
Gadolinium-doped lead lanthanum zirconate titanate (Pb<inf>0.94&#x2212;x</inf>Gd<inf>x</inf>La<inf>0.06</inf>)(Zr<inf>0.52</inf>Ti<inf>0.48</inf>)O<inf>3</inf>: PLGZT ceramics with x= 0, 2, 4, 6, and 8% have been successfully fabricated using a sol-gel auto-combustion method. Pure perovskite PLGZT was acquired for the powder calcined at 850 &#x00B0;C for(More)
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