Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 28 for “"Bromate"”.
-
Electro-reduction of bromate on mercury
<p>"The electrochemical reduction of BrO⁻₃ was studied on a stationary Hg electrode in neutral and basic solutions containing K⁺, Na⁺, and L⁺. Coulombic efficiency studies showed Br⁻ to be the predominant reduction product. The steady state kinetic parameters include Tafel slopes of ca. -0.120 V, …
-
The Abiotic and Biotic Reduction of Bromate
… active GAC filtration cannot provide sustained bromate removal whereas BAC filtration can provide sustained removal under a wide variety of water quality conditions.
-
Balancing Bromate Formation, Organics Oxidation, and Pathogen Inactivation: The Impact of Bromate Suppression Techniques on Ozonation System Performance in Reuse Waters
… can also form disinfection byproducts such as bromate from the oxidation of naturally occurring anion bromide. Bromate is a known human carcinogen and is regulated by the EU, WHO, and USEPA to a maximum limit of 10µg/L. In waters high in bromide, especially above 100µg/L, bromate formation …
-
Anomalous Wave Dispersion in the Cyclohexanedione-Bromate Chemical Oscillator
… (based on chemistry related to uncatalyzed bromate oscillators) for the oxidation of organic substrate to provide the new dynamics.
-
Anomalous Wave Dispersion in the Cyclohexanedione-Bromate Chemical Oscillator
… (based on chemistry related to uncatalyzed bromate oscillators) for the oxidation of organic substrate to provide the new dynamics.
-
The reduction of bromate in drinking water by activated carbon
The reduction of bromate at trace concentrations in drinking water has been studied. Both granular activated carbon and powdered activated carbon have been used to reduce bromate. Solution characteristics which influenced the reduction of bromate during this study include solution pH, initial …
-
Integrated Optimization of Cryptosporidium Inactivation and Bromate Formation Control in Ozone Contactors
… simultaneous control of C. parvum oocysts and bromate during ozone disinfection. Elucidation of factors affecting the level of C. parvum inactivation and bromate formation, such as source water characteristics and ozone contactor operating conditions, was pursued by computer simulation along …
-
Frequency dependence on the temperature in nuclear quadrupole resonance of sodium bromate
… The inequality of the two assumed modes of bromate-group vibration as well as the possibility of temperature dependence associated with these bromate-group vibrations were considered. Results indicate that a temperature dependence of the bromate-group vibrations must be included for …
-
Investigation of Bromate Formation during Ozone-Biofiltration Treatment Processes for Potable Reuse Application
… to human health. Potentially carcinogenic bromate is a DBP formed during the ozonation of bromide-containing waters. In bromide containing water, especially above 50 μg/L, bromate formation becomes a major concern. To understand bromate formation, a comprehensive pilot-scale study of …
-
Evaluation of Bromate Formation and Control using Preformed Monochloramine in Ozonation for Indirect Potable Reuse
… inactivates disease-causing microbes. However, bromate, a regulated possible human carcinogen can form when bromide is present due to natural or industrial sources. Pilot-scale testing on wastewater treatment plant effluent with high bromide concentrations showed that the addition of preformed …
-
Removal of selected water disinfection byproducts, and MTBE in batch and continuous flow systems using alternative sorbents.
… (BDCM), methyl tertiary butyl ether (MTBE), bromate and bromide ions. Sorbents used included light weight aggregate (LWA), an inorganic porous material with unique surface characteristics, Amberlite® XAD-16, a weakly basic anion exchange resin, Amberjet®, a strongly basic anion exchange …
-
Time-Lapse Polymerizations Triggered by pH clock Reactions
… studied here. The second chapter focuses on the bromate-sulfite clock reaction. Based on some simplified and accepted reaction equations for the bromate-sulfite clock. We presumed it may be possible to increase the pH of the solution via ammonia addition and hinder or significantly reduce the …
-
Ozone-bromide-NOM interactions in water treatment
… and its conjugate acid (HOBr), and eventually bromate (BrO$\sb{3\sp{-}}$), a suspected carcinogen. Natural organic matter (NOM) reads with HOBr/OBr$\sp{-}$ to form organic bromine (TOBr).
-
Magnetic resonance investigations of pH in microemulsions
… of propagating acidity fronts in the bromate-sulfite reaction using magnetic resonance imaging. Contrast agents that are sensitive to pH were investigated in aqueous and microemulsion media. Successful magnetic resonance imaging of the aqueous system was achieved using the pH-dependent …
-
Evaluation of Soil Aquifer Treatment in a Lab Scale Soil Column Experiment
… attenuation of regulated (nitrate, nitrite, bromate, trihalomethane (THM), haloacetic acids (HAA), organic carbon) and unregulated contaminants of concern that affect drinking water quality. Effective pathogen removal was observed with 6 to 7-log removals of MS2 and E. coli and 3 to 5-log …
-
Validating Pathogen Reduction in Ozone-Biofiltration Water Reuse Applications
… effluent while balancing the formation of bromate and oxidation of trace organic contaminants (TrOCs). Two chemical bromate control methods were compared including preformed monochloramine (NH2Cl), and hydrogen peroxide (H2O2). Neither of these bromate control methods had any demonstrable …
-
Analysis and occurrence of disinfection by-products in fresh and salt water
<p>"Haloacetic acids, trihalomethanes, and bromate are important toxic water disinfection by-products (DBPs) that the US Environmental Protection Agency (USEPA) regulates in drinking water. Iodoacetic acids and halonitromethanes (HNMs) are the unregulated emerging DBPs that have been recently found …
-
Evaluation of Contaminant Removal Through Soil Aquifer Treatment by a Lab Scale Soil Column Experiment Including a Trace Contaminant Spike Test
… species, and the disinfection byproducts bromate and NDMA. During Phase 2 of testing, CECs, iron, arsenic, bromide, and sulfate were monitored in addition to those monitored during Phase 1. About 50% of the TOC was removed within 3 days of travel time, with no additional removal observed …
-
ΜΕΛΕΤΗ ΚΑΤΑΛΥΤΙΚΟΥ ΠΡΟΣΔΙΟΡΙΣΜΟΥ ΙΧΝΟΣΥΓΚΕΝΤΡΩΣΕΩΝ ΙΟΝΤΩΝ ΣΙΔΗΡΟΥ (ΙΙΙ) ΚΑΙ ΒΑΝΑΔΙΟΥ (V)
… BY HYDROGEN PEROXIDE AND POTASSIUM BROMATE, RESPECTIVELY. THE OPTIMAL CONDITIONS FOR BOTH ELEMENTS DETERMINED WERE FOUND BY STUDYING THE RATE DEPENDENCE OF THE CATALYSED AND THE NON-CATALYSED REACTION ON PH, TEMPERATURE, IONIC STRENGTHAND CONCENTRATIONS OF THE REACTANTS. THE PROPOSED …
Page 1 of 2