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Showing 1 to 20 of 59 for “"Sulfur compounds"”.
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Metabolism of methylated sulfur compounds in methanosarcina
Made available in DSpace on 2017-08-10T20:32:59Z (GMT). No. of bitstreams: 4 FU-DISSERTATION-2017.pdf: 13288108 bytes, checksum: b85f4636d57f959f787ecbec5a2c6201 (MD5) He_Fu_Thesis_4.17.docx: 11015164 bytes, checksum: 69b561ec04f67d2873af48f5281b0ad5 (MD5) LICENSE.txt: 4202 bytes, checksum: …
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Preparation and complexation reactions of some sulfur compounds
Abstract available: p.[3]
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Determination of volatile sulfur compounds in aqueous solutions
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1982.
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Electrochemical Detection of Aliphatic Sulfur Compounds in Liquid Coal Extracts
The presence of sulfur compounds in coal is a serious environmental problem that affects the coal industry. This problem is due to the fact that organic sulfur is not separated or removed during any physical cleaning process. Organic sulfur is removed only during a more costly chemical …
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Studies on the Degradation of Desiccants in Temperature Swing Adsorption Processes and the Adsorptive Separation of Sulfur Compounds from Industrial Fluids
… Adsorptive separation also can remove CO2 and sulfur dioxide (SO2) from industrial flue gases. The dehydration of natural gas by adsorption is a standard technology used worldwide. For natural gas wells in remote locations or offshore, adsorptive dehydration is the technology of choice. When …
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Theoretical studies of the bonding, energetics and spectra of sulfur and phosphorus halides, and reactivity of divalent sulfur compounds: impact of recoupled pair bonding
… chemical calculations on a number of hypervalent compounds—SFn-1Cl (n=1-6), SCln (n=1-6), PFnCl (n=2-4)—are presented in this dissertation. The bonding in the ground and excited states of these species was analyzed using generalized valence bond theory. These (and other) studies have led to a …
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Supercritical Water desulfurization of crude oil
Supercritical Water (SCW) desulfurization was investigated for both model sulfur compounds and Arab Heavy crude. In part 1, the reactions of alkyl sulfides in SCW were studied. During hexyl sulfide decomposition in SCW, pentane and CO+CO₂ were detected in addition to the expected six-carbon …
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Predicting organosulfur chemistry in fuel sources
Desulfurization of fossil fuels with supercritical water (SCW) has been the topic of many studies over the past few decades. This process does not require the use of any catalyst, eliminates the need for a hydrogen feed, and minimizes coke formation. Previous research has shown that it has the …
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Investigation of Dibenzothiophene Removal from I Organic Phase: Enzymatic Approach vs. Ionic Liquids
Sulfur in fuel fractions like gasoline and diesel is responsible for acid-rain. The low levels of sulfur in fuels imposed by the environmental regulations of 15 ppm by 2006, have led to the search of alternative methods to comply with these new demands. The conventional process of …
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The reduction of organic compounds of sulfur by metals in liquid ammonia
1. A systematic study of the reduction of organic sulfur compounds by different metals in liquid ammonia is reported for the first time. 2. A metal with a high half-cell potential favors a greater extent of reduction than a lower potential metal. 3. The greater the concentration of ammonium ion as …
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The role of sulfur in salt marsh metabolism
… acts largely as a temporary store of reduced. sulfur. The pyrite concentration of the peat undergoes seasonal changes. On an annual basis, the reduced sulfur which results from sulfate reduction is either re-oxidized to sulfate within the peat or is exported, much of it as thiosulfate or a …
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Comparative Analysis and Speciation of Sulfur K, L-edge X-ray Absorption Spectroscopy
Sulfur plays a critical role in the evolution of many common biological aspects of life as a key component of protein and enzyme function. It also plays a significant role in the contemporary demand for energy resources in modern society, with associated industrial and commercial applications. …
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Thermochemical properties, bond energies and internal rotor potentials in methyl ethyl sulfide and oxygenated sulfur hydrocarbons intermediates for modeling its combustion and atmospheric chemistry
… reactions to intermediate hydrocarbon and to sulfur oxides. The oxides of these sulfur compounds and the intermediates from the oxidation process are known to form aerosols that can counteract the global warming green house effect. Recent studies also suggest that some aerosols can also …
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Identification and generation pattern of odor-causing compounds in dewatered biosolids during long-term storage and effect of digestion and dewatering techniques on odors
… objective of this research was to identify the compounds responsible for persistent odors in biosolids during long-term storage using olfactometry measurements and to determine their generation pattern with regard to time of appearance and decline using gas chromatography-mass spectrometry …
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Sensorial characteristics of odour active compounds from raw natural rubber
… to control emissions, more effectively. Sulfur flow analysis was incorporated in this study to understand how each rubber processing stage affect the emission of malodorous sulfur compounds. A significant amount of sulfurs were retained in the solids and carried through to the final dried …
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