Role of chlorine and oxygen in the photocatalytic degradation of trichloroethylene vapor on TiO2 films
Article Abstract:
A study aimed at examining the roles of oxygen and chlorine in the photocatalytic degradation of trichloroethylene (TCE) is presented. The experiment was performed using ring-roughened annual reactors and anatase titanium dioxide films. Chlorine atoms, which are formed through the reaction of hydroxyl radicals from water vapor to TCE molecules, are believed to attack additional TCE molecules thereby forming intermediates/products including more chlorine atoms. The role of oxygen on reaction intermediate/product formation, however, has yet to be defined.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
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Predictions of potential human health and ecological risks from power plant discharges of total residual chlorine and chloroform into rivers
Article Abstract:
A conceptual model of the release and fate of total residual chlorine and chloroform was developed to predict the potential human health and ecological risks from power plant discharges of the contaminants. The model proves most useful in situations where chloroform is the dominant trihalomethane. Thus, the model can best predict the release and fate of total residual chlorine and chloroform in waters with low background bromide ion concentrations of 50 microng/L or less.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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Surfactant foam/bioaugmentation technology for in situ treatment of TCE-DNAPLs
Article Abstract:
A novel remediation technology that utilized surfactant foam proved efficient in in situ remediation of trichloroethylene (TCE) that occur as dense nonaqueous-phase liquids (DNAPLs). The surfactant Steol CS-330 injected into TCE-DNAPL-contaminated sand columns has effectively enhanced the mobilization of TCE-DNAPLs. Mobilization, however, was greatly enhanced when the foam was injected in a pulsed operation.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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- Abstracts: Methanotrophic biodegradation of trichloroethylene in a hollow fiber membrane bioreactor. Methanotrophic TCE biodegradation in a multi-stage bioreactor
- Abstracts: Dechlorination of trichloroethene in aqueous solution using Fe0. Surfactant-enhanced remediation of a trichloroethene-contaminated aquifer. 1. transport of Triton X-100
- Abstracts: Polychlorinated benzene and polychorinated phenol in heterogeneous combustion reactions of ethylene and ethane
- Abstracts: Enhanced solubilization and destruction of tetrachloroethylene by hydroxypropyl-beta-cyclodextrin and iron. Numerical simulation of surfactant-enhanced solubilization of pooled DNAPL
- Abstracts: Effects of dissolved oxygen and light exposure on determination of K(sub OC) values for PAHs using fluorescence quenching