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Showing 1 to 20 of 29 for “"Oxidation reduction potential"”.
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Investigation of the oxidation-reduction potential of rumen contents
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Dairy, 1958
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Correlation of biochemical oxygen demand with oxidation-reduction potential of settled sewage
… whether correlation exists between the O-R potential and the biochemical oxygen demand of settled sewage. The source of the samples was the effluent end of the primary clarifier at the V.P.I. Sewage Disposal Plant. The investigation consisted essentially of performing the standard …
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The effect of oxidation-reduction potential on the outgrowth and chemical inhibition of Clostridium botulinum type E spores
The effect of oxidation-reduction potential (Eh) and oxygen concentration on the outgrowth of Clostridium botulinum type E spores was studied. An airtight flask containing electrodes for continuous measurement of Eh and pH and attached tubing for the exchange and mixing of various gases (i.e. …
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The effect of oxidation-reduction potential on the outgrowth, toxin production, and chemical inhibition of Clostridium botulinum type A spores
The effect of oxidation-reduction potential (Eh) on the outgrowth, toxin production, and chemical inhibition of Clostridium botulinum type A spores was investigated. Growth, toxin formation, and Eh7 changes were monitored in an airtight four necked flask containing electrodes for continuous …
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Evaluation of the Correlation Between the Oxidation Reduction Potential and Free Chlorine Residual for Different Chlorine Sources Used in Poultry Drinking Water Sanitation
… presence of all bacteria. In recent years, the oxidation-reduction potential (ORP) meter has been a tool utilized by the poultry industry to monitor chlorine efficacy in drinking water. An ORP reading of 650-750 millivolts (mV) has become the industry standard for assuring an acceptable …
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STRUCTURE REFINEMENT OF CYTOCHROME C555 (CHLOROBIUM, THIOSULFATOPHILUM).
… for its evolutionary implications. Second, the oxidation-reduction potential of cytochrome c₅₅₅ is significantly different from the oxidation-reduction potential of other cytochromes whose structures have been determined. Comparisons with the other structures would provide information concerning …
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A Study of the Ferrous-Ferric System in Phosphoric Acid
… show the effect of orthophosphoric acid on the oxidation-reduction potential of the ferrous-ferric system by using methods of procedure and apparatus that are easily reproducible under laboratory conditions. |In the media of various concentrations of orthophosphoric acid, the potential of the …
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A value based approach to leach optimization at Rössing Uranium Limited
… leach conditions such as prevailing redox potential, incomplete leaching within the normal residence time or galvanic hindrance. Specific focus was, therefore, placed on the effect of oxidation reduction potential (ORP) on uranium extraction and reagent consumption and the determination of …
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The biological removal of phosphorus at the Clark County Sanitation District wastewater treatment plant
… alkalinity, pH), dissolved oxygen levels, oxidation reduction potential, microbiology, volatile fatty acid concentrations, fraction of P in wasted sludge, and nitrification levels. Analysis of nitrate and effluent phosphorus levels indicated a strong correlation between the two parameters. …
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Geochemical Impacts From Permanganate Oxidation Based on Field Scale Assessments.
<p>In situ chemical oxidation (ISCO) using permanganate is a technology for treatment of organic hazardous wastes. This research is a review of 30 permanganate (MnO<sub>4</sub><sup>-</sup>) ISCO sites to determine whether there are long term impacts on groundwater quality due to the introduction of …
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Pilot-scale study on anaerobic/aerobic treatment of a textile dye wastewater
… nitrogen (TKN), ammonia, nitrate, chloride and oxidation-reduction potential (ORP). Nearly 50% color removal was observed during anaerobic treatment with a 12 hour HRT, with a total system color removal, including subsequent aerobic treatment, of about 53%.
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Denitrification in a best management practice bioretention system
… the saturated anoxic zone were also analyzed for oxidation-reduction potential, dissolved oxygen, and nitrogen and phosphorus species. Concentrations of nitrate and nitrite were below the detection limit for most samples, indicating consumption by denitrifying bacteria and high rates of removal …
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Magnetite Oxidation in Aqueous Systems
… of contaminated groundwater systems due to its oxidation/reduction potential for reduction of contaminants such as carbon tetrachloride. Little characterization and analysis has been done to describe the kinetics of magnetite transformation during oxidation. This work focuses on monitoring the …
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The Effect Of Free Chlorine And Chloramines On Lead Release In A Distribution System
… SW. Laboratory measurements of finished waters oxidation-reduction potential (ORP) were equivalent by source and were not affected by the addition of more than 100 mg/L of sulfates or chlorides, but were significantly higher in the presence of free chlorine relative to chloramines. Development …
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A kinetic and equilibrium description of camphor hydroxylation by the P450cam monoxygenase system
… sulfhydryl group on cytochrome m. Regulation of oxidation/reduction potential is observed by ligation at this site and the data are presented in the form of a free energy diagram graphically indicating the coupling between redox and binding energies.
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Μεταβολές στην αναερόβιο βακτηριδιακή χλωρίδα του κόλπου σε γυναίκες που υποβλήθηκαν σε υστερεκτομή
… of blood. These two factors can cause low Oxidation reduction potential (Eh) and lack of oxygen in the damaged tissues. It appears that both factors are necessary for the multiplication of the anaerobes. Postoperative complications were developed in 9 (nine) patients (31,9%) after abdominal …
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Practical Electrode Potentials of Mercuric-Mercurous Systems in the Presence of Chloride Ions
… the reaction has proceeded to completion, the oxidation-reduction potential of the solution is -.430 volts and this value appears to be far out of proportion with the accepted value for the standard electrode potential for mercuric-mercurcus systems determined by Popoff and his associates to be …
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Microbiological influences on phosphorus release from aerobic lake sediments
… of phosphorus release from sediments by oxidation-reduction potential neglect the potential of microorganisms to transfer large amounts of phosphorus out of sediments. Aerobic surface sediments collected from the eutrophic Occoquan Reservoir, Virginia, were treated with ethylene oxide to …
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Characterisation of groundwater in mainly old and closed landfill sites
… NO3, SO42-, Na+, K+, Ca2+, Ni2+, Cu2+, Pb2+, oxidation - reduction - potential (ORP) and pH. The first ten of these analytical parameters were considered for groundwater quality assessment and the most important selected for more detailed study namely CH4, C02, EC, NH4-N, COD and TOC. …
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Geobiology of marine magnetotactic bacteria
… and high intracellular iron content suggest a potentially significant role in iron cycling, but very little is known about their population dynamics and regulation by environmental geochemistry. The MTB community in Salt Pond (Falmouth, MA), a small stratified marine basin, was used as a model …
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