Recycled water is becoming an important focus as freshwater resources are becoming more and more limited. Disinfection byproducts (DBPs) are a consequence of killing harmful pathogens in drinking water. Removing the DBPs from the disinfected water calls for additional and more advanced treatment. Advanced Oxidation Processes (AOPs) are efficient wastewater treatment techniques that generate free radicals as the primary active species accountable for the degradation of organic contaminants. Typical AOPs utilize the highly oxidative hydroxyl radical, however other radicals such as the chlorine radical can also be employed. Experimentats have shown that the dichloramino radical, NCl2, was found as a product of the rapid reaction of the hydroxyl radical with trichloramine. Nitrosamines are significant DBPs that form when the chlorine to ammonia molar ratio is increased with the addition of concentrated hypochlorite to control nitrification during chloramination. This research is focused on measuring the kinetics of the potential radical species NCl2 with a library of nitrosamines.

Investigation of radical chlorine species in advanced oxidation processes

255th National Meeting (2018)

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