Record Display for the EPA National Library Catalog


Main Title Sunlight Induced Photochemical Decay of Oxidants in Natural Waters: Implications in Ballast Water Treatment.
Author W. J. Cooper ; A. C. Jones ; R. F. Whitehead ; R. G. Zika ; R. G. Petasne
CORP Author California Univ., Irvine. Dept. of Civil and Environmental Engineering.; North Carolina Univ. at Wilmington. Dept. of Chemistry.; Rosenstiel School of Marine and Atmospheric Sciences, Miami, FL.; Environmental Protection Agency, Washington, DC.
Year Published 2006
Stock Number PB2014-107929
Additional Subjects Photochemical oxidants ; Ballast water ; Water treatment ; Aquatic organisms ; Chlorine dioxide ; Decay ; Decomposition ; Discharge ; Drinking water ; Hydrogen peroxide ; Invasive species ; Ships ; Sunlight
Library Call Number Additional Info Location Last
NTIS  PB2014-107929 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 27p
The transport and discharge of ballast water has been recognized as a major vector for the introduction of invasive species. Chemical oxidants, long used in drinking water and wastewater treatment, are one treatment method for the control of invasive species currently being tested for use on ships. One concern when a ballasted vessel arrives in port is the adverse effects of residual oxidant in the treated water. The most common oxidants include chlorine (HOCl/OCl-), bromine (HOBr/OBr-), ozone (O3), hydrogen peroxide (H2O2), chlorine dioxide (ClO2), and monochloramine (NH2Cl). The present study was undertaken to evaluate the sunlight mediated photochemical decomposition of these oxidants. Sunlight photodecomposition was measured at various pHs using either distilled water or oligotrophic Gulf Stream water for specific oxidants. For selected oxidants, quantum yields at specific wavelengths were obtained.