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Showing 1 to 20 of 43 for “"HYDROGEN SULPHIDE"”.
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Hydrogen sulphide in the well waters of Chicago and vicinity
Made available in DSpace on 2017-11-30T22:11:15Z (GMT). No. of bitstreams: 2 5990991.pdf: 4362844 bytes, checksum: 07d6623c0ec052c96aa444385f6a4785 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1915
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Aqueous hydrogen sulphide corrosion of iron, iron/chromium and iron/nickle alloys.
… of reactions that occur during aqueous hydrogen sulphide corrosion. Linear regression analysis was used on selected ranges of the potentiodynamic polarization data to obtain values of the anodic and cathodic transfer coefficients for the corrosion reactions of 99.998% iron in aqueous …
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MOLECULAR AND FUNCTIONAL CHARACTERISATION OF THE ROLE OF HYDROGEN SULPHIDE IN SEXUAL MEDICINE
Hydrogen sulphide (H2S) is an endogenously produced gasotransmitter with a similar role as nitric oxide (NO) which has long been recognised as an important mediator in erectile physiology. Several studies have investigated the role of H2S in erectile function and H2S was found to exert definitive …
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The effect of vanadium oxidation states on the conversion of hydrogen sulphide to elemental sulphur
The formation of toxic hydrogen sulphide (H₂S) gas as a by-product is unavoidable during production of fuels and other chemicals from coal, crude oil, and natural gas. There are different processes available to recover H₂S of which the Stretford™ process is one of them. The concentration of …
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The hydrolysis of ammonium sulphide, and the dissociation of the first and second hydrogen of hydrogen sulphide
Thesis: M.S., Massachusetts Institute of Technology, Department of Chemistry, 1903
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The effects of oxygen deficiency, hydrogen sulphide and turbidity on the rock lobster, Jasus lalandii : implications for diamond dredge-mining in Namibia
… Jasus lalandii, to decreased oxygen, elevated hydrogen sulphide and turbidity. For the latter objective, laboratory-based experiments were designed in which juvenile lobsters were exposed to various levels of hypoxia and increased hydrogen sulphide and suspended sediment levels to determine the …
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ΑΝΑΛΥΤΙΚΕΣ ΕΦΑΡΜΟΓΕΣ ΜΟΡΙΑΚΗΣ ΕΚΠΟΜΠΗΣ ΑΠΟ ΚΟΙΛΟΤΗΤΑ
… OF SULPHUR COMPOUNDS WHICH GENERATE SULPHIDE OR HYDROGEN SULPHIDE OR SULPHUR DIOXIDE BY A CHEMICAL REACTION. THE GENERATION OF HYDROGEN SULPHIDE BY ELECTROLYSIS OF ORGANIC SULPHUR COMPOUNDS IS STUDIED. THE DETECTOR HAS BEEN COUPLED TO AN AIR-SEGMENTED CONTINUOUS FLOW SYSTEM. THIAMINE …
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The effect of sulphur in fuel on the performance of automotive catalysts
… operation the stored sulphates are released as hydrogen sulphide and is the cause for the smell observed. The sulphur storage/release process results in hydrogen sulphide emissions many times higher than is possible from steady-state conversion from the fuel sulphur level. By using a …
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Polymer impregnation of concrete as a means of improving corrosion resistance
… by corrosion due primarily, and ultimately, to sulphide attack. Sulphides are formed from the sewage sulphates, by bacteria in the slime layers on the walls of the pipe. These diffuse, firstly into the liquid, and then into the sewer atmosphere as hydrogen sulphide, which is then in turn …
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Experimentelle und theoretische Ansätze zur Entschwefelung eines mit Kohlenwasserstoffen beladenen Gases
The catalycal oxidation of hydrogen sulphide in presence of small amounts of hexan has been investigated over a Titania catalyst. H2S is converted into sulphur. Nevertheless the catalyst undergoes a deactivation through coke formation. In order to explain the coke profile in the inner of the …
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Modelling and Simulation of Carbon Dioxide Transportation in Pipelines: Effects of Impurities
… impurities include nitrogen, methane, oxygen, hydrogen, sulphur dioxide, hydrogen sulphide, carbon monoxide, ammonia, argon, etc. The effects of the impurities are studied using simulation software; Aspen HYSYS, gPROMS and HydraFlash. The results show that all impurities impacted negatively on …
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The recovery of gallium from a Virginia feldspar ore
… 4. Removal of iron by precipitation of ferrous sulphide with hydrogen sulphide 5. Precipitation of gallium by cupferron 6. Ignition of the cupferron precipitate to gallium oxide
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ΚΑΤΑΛΥΤΙΚΗ ΔΙΑΣΠΑΣΗ ΥΔΡΟΘΕΙΟΥ ΓΙΑ ΤΗΝ ΠΑΡΑΓΩΓΗ ΥΔΡΟΓΟΝΟΥ ΚΑΙ ΘΕΙΟΥ
… ATMA. THE THERMAL HOMOGENEOUS DECOMPOSITION OF HYDROGEN SULPHIDE AND THE CATALYTIC HETEROGENEOUS ONE, WITH MOS2 PARTICLES, HAVE BEEN INVESTIGATED IN AN EXPERIMENTAL TUBULAR REACTOR IN THE RANGES OF TEMPERATURE 873- 1133 K AND PRESSURE 1.3-3.1 ATMA. THE TECHNICAL KINETIC MODELS OFTHE ABOVE …
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The formation and origin of carbonate minerals in the Darling and Yzerfontein hypersaline pans, Western Cape, South Africa
… which bacterial sulphate reduction is occurring (hydrogen-sulphide smell). All of the pans contain disseminated calcite, with only the Zwartwater North and Zwartwater South pans containing a mixture of dolomite and calcite. Yzerfontein and Zwartwater North pans contain small aragonitic gastropod …
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Avaliação de permeação de hidrogênio em célula multiteste e susceptibilidade ao trincamento sob tensão em presença de sulfeto de um aço de especificação API 5L X70
… of CO2 (carbon dioxide), and especially of H2S (hydrogen sulphide), which accelerate the materials corrosion in contact with petroleum. In this environment that the API 5L X70 steel studied in this research operates. In this context, the work present the effect of different concentrations of H2S …
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The mechanism of cathodic depolarization exhibited by sulphate-reducing bacteria during metallic corrosion processes
… to the cathodic activity of dissolved hydrogen sulphide produced by the organisms. The conclusions of other workers, quoted in support of proposed enzymic catalysis of charge transfer from cathodes to redox dyes in laboratory systems, are considered, in view of experimental work …
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Surfactant aspects of corrosion inhibition
… in the presence of dissolved carbon dioxide and hydrogen sulphide. The measurements were repeated in the presence of dodecylbenzyldimethylammonium chloride and I-aminoethyl-2-(8- heptadecenyl)-2-imidazoline acetate, which are thought of as model corrosion inhibitors. Both surfactants were found …
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Palladium, yttrium, copper ternary alloys for hydrogen purification
Palladium has long been recognised for its hydrogen sorption and separation capabilities. Alloying with different metals to produce binary alloys has been shown to further improve many of its essential properties significantly. Currently palladium-silver alloys are used commercially for the …
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