In Situ Hydrogen Peroxide Generation for Use as a Disinfectant and as an Oxidant for Water Recovery by Aqueous Phase Catalytic Oxidation

Paper #:
  • 961521

Published:
  • 1996-07-01
Citation:
Akse, J., Atwater, J., Schussel, L., Thompson, J. et al., "In Situ Hydrogen Peroxide Generation for Use as a Disinfectant and as an Oxidant for Water Recovery by Aqueous Phase Catalytic Oxidation," SAE Technical Paper 961521, 1996, https://doi.org/10.4271/961521.
Pages:
13
Abstract:
The initial development effort is described for an electrochemical hydrogen peroxide generator and pervaporation module capable of producing and delivering hydrogen peroxide to a contaminated waste water stream as an oxidant or to a pure water stream for use as a disinfectant. A three chambered cell is used to generate hydrogen peroxide by a combined electrodialysis and electrochemical process. Each chamber is separated from its neighbor by a membrane allowing selective production of peroxide anions and hydrogen ions under controlled pH conditions followed by migration to form hydrogen peroxide. Concentrations greater than 6,500mg/L have been produced in this manner. The effects of voltage, pH, membranes, electrode materials, and method of oxygen introduction are delineated. Hydrogen peroxide is then transferred to the end-use stream by pervaporation. The impact of pH, relative flow rates, and ionic strength of sink and source solutions on pervaporation rates is detailed. The use of hydrogen peroxide as a superior disinfectant and as an oxidant is also described.
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