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The present study investigates the oxidation of methyl tert-butyl ether (MTBE) by conventional ozonation and the advanced oxidation process (AOP) ozone/hydrogen peroxide under drinking water treatment conditions. The major degradation products identified w ...
Bromate formation during ozonation of bromide-containing natural waters is somewhat inversely connected to the ozone characteristics: an initial fast increase followed by a slower formation rate. During the initial phase mostly OH radical reactions contrib ...
The influence of water quality parameters (dissolved organic matter and alkalinity) on the efficiency of the ozone/hydrogen peroxide (O-3/H2O2) advanced oxidation process (AOP) relative to the corresponding conventional ozonation process was investigated. ...
This study investigates the oxidative transformation of diethylenetriaminepentaacetate (DTPA). a synthetic ligand. during drinking water ozonation. The rate coefficients for the reactions of CaDTPA(3-) and ZnDTPA(3-) with ozone were determined to be 6200 a ...
Inactivation of B. subtilis spores with ozone was investigated to assess the effect of pH and temperature, to compare the kinetics to those for the inactivation of C. parvum oocysts, to investigate bromate formation under 2-log inactivation conditions, and ...
A new indicator is proposed to det. whether tropospheric O3 prodn. in a specific area is limited by volatile org. compds. (VOC) or NOx. This indicator, tVOCOH/tNOxOH, describes the ratio of OH- lifetime vs. losses by reaction with VOC and NOx. Whereas tNOx ...
A combined chemical-biological treatment of industrial wastewater using ozonation as the first step of a Sequencing Batch Biofilm Reactor (SBBR) process, in which 3-methylpyridine (3MEP) was degraded as a model industrial pollutant, has been developed. The ...
Consecutive treatment of (trifluoromethoxy)benzene with sec-butyllithium and electrophilic reagents affords previously inaccessible ortho-substituted derivs. in generally excellent yields. 2-(Trifluoromethoxy)phenyllithium acts as the key intermediate. The ...
The influence of temperature, pH, alkalinity, and type and concentration of the dissolved organic matter (DOM) on the rate of ozone (O-3) decomposition, O-3-exposure, . OH-exposure and the ratio R-ct of the concentrations of . OH and O-3 has been studied. ...
This paper proposes the use of an O3 budget system based on a diagnostic filter to quantify the role of emissions in defining O3 exposure. The utility of the proposed ozone budget system is demonstrated by applying it to O3 exposure uncertainty ests. deriv ...
