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|Title:||Advanced Oxidation Treatment of Army Industrial Wastewaters : Propellant Wastewater|
|Authors:||Maloney, Stephen W.|
Boddu, Veera M.
Peyton, Gary R.
|Keywords:||Sewage -- Purification -- Mathematical models|
|Publisher:||Construction Engineering Research Laboratories (U.S.)|
|Series/Report no.:||Technical Report (Construction Engineering Research Laboratories (U.S.));no. 97/137|
|Abstract:||Advanced Oxidation Processes (AOPs) are water treatment processes that generate hydroxyl (OH) radicals for destruction of organic contaminants using ozone/UV, hydrogen peroxide/UV, or ozone/hydrogen peroxide. These processes are important methods for Army wastewater treatment and contamination remediation. This project: (I) analyzed information on AOPs for treatment of Army waste streams; (2) developed predictive models for process development, optimization, and cost projection; and (3) demonstrated on a laboratory scale AOP treatability of wastewater-containing DNT and ethanol. A kinetic model was found most suitable for modeling the contaminant destruction process. For the ONT-containing wastewater, not only OH, but also et hydroxyethyl radical (HE) produced by the action of hydroxyl radical on ethanol, were important for the destruction of DNT, depending on the oxygen concentration in solution. Techniques of kinetic analysis were used to determine the form of the rate equation for HE radical, and to evaluate the appropriate rate constants to yield the general model for reductive treatment. Combination with the OH-radical model gave a comprehensive model that correctly described systems in which both OH and HE processes occurred simultaneously. Discovery of the reductive reaction using the kinetic techniques led to a factor of 230 improvement in AOP treatment efficiency.|
|Gov't Doc #:||USACERL Technical Report 97/137|
|Rights:||Approved for Public Release; Distribution is Unlimited|
|Size:||161 pages / 166.5Mb|
|Types of Materials:||PDF/A|
|Appears in Collections:||Technical Report|
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|USACERL Technical-Report 97-137.pdf||170.53 MB||Adobe PDF|