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Disinfectant demand of sulfur based H2O2 quenching intermediates after UV advanced oxidation of drinking water

Status Current
Seeking Researchers No
Start Date 01/01/2012
End Date 05/15/2012
Funding Source Undergraduate Research Grant
Funding Amount 2,000
Community Partner
Related Course
Last Updated 01/22/2012 07:31PM
Keywords Water, chemistry, chlorine, ultraviolet


  Aaron Dotson

Student Researchers
  Stephanie Burt


The proposed research will isolate and examine the kinetics of specific chemicals used in ultraviolet radiation and hydrogen peroxide oxidation (UV/ H2O2) which is an advanced oxidation process used in drinking water treatment. After UV/ H2O2 disinfection process, residual H2O2 must be removed from the water through the addition of quenching agents. Common non-chlorine agents include sulfite (〖SO〗_3^(2-)) or thiosulfate (S_2 O_3^(2-)). Chlorine must then be added to ensure water disinfection throughout the water distribution system. During the quenching of hydrogen peroxide, intermediates form that may remain in the solution, then react with and consume this added chlorine. The primary goal of this research is to examine the hypothesis that intermediates produced in the reactions of hydrogen peroxide with sulfite or thiosulfate remain in the system and significantly contribute to the consumption of chlorine.

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