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.
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Showing 1 to 20 of 2988 for “"CO2"”.
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CO2 in Silikatschmelzen
Die Struktur CO2-haltiger Albit-Diopsidgläser sowie von einem CO2-haltigen Alkalisilikatglas mit NBO/T = 0,98 wurde unter Normalbedingungen mit Infrarot- (IR) und Raman-Spektroskopie untersucht. Im Alkalisilikatglas zeigen die Raman-Spektren klar eine polymerisierende Wirkung des CO2. In den …
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Applications of CO2 in CO2-responsive foams and pyrochlore froth flotation
… this thesis deals with in two projects by using CO2: (1) CO2-switchable additives for controlled foam dissipation, and (2) the use of CO2 as a pH modifier in pyrochlore flotation. The first project is a study of foams generated with the conventional surfactant tetradecyltrimethylammonium bromide …
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CO2 monitoring by optical emission spectroscopy and mass spectrometry for CO2 plasmas
… metrologies can be employed to measure the CO2 concentration in such systems. In this work quadrupole mass spectrometry and optical emission spectroscopy methods are compared. The QMS method was implemented by an SRS Universal Gas Analyzer and the OES method through a Gencoa OPTIX remote …
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Arðsemismat á CO2 söfnunarkerfi
… arðsemismat og áhættugreining á fjárfestingu á CO2 söfnunarkerfi fyrir Ölgerðina. Þetta kerfi tekur koltvísýring, sem myndast við gerjun bjórs, hreinsar hann og safnar honum í safntank þar sem hann er tilbúinn til endurnotkunar í framleiðslu. Í verkefninu eru smíðuð tvö líkön. Líkan sem reiknar …
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CO2-Hydrierung in Aminen
Die Verringerung von CO2-Emissionen und die Schaffung eines Kohlenstoffkreislaufs sind Gegenstand vieler Forschungsarbeiten. Mittels Absorption wird CO2 in einem Lösungsmittel (vorrangig Alkoholamine) aus verschiedenen Gasmischungen abgetrennt und anschließend zu Wertstoffen umgesetzt. In der …
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CO2 body worn logger
… function. Its function includes gathering the CO2 level, humidity and Temperature as well as the location coordinates with time, and this data stored on the device memory, to allow for downloading, for the user to be able to analyse log data. The device stores its log data on the SD card, and …
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Preparation of CO2 adsorbents and techno-economic analysis for CO2 capture and utilization
Adsorption is one promising technology because CO2 adsorbents can provide an opportunity to capture CO2 with lower energy consumption, good stability, non-volatility, etc. Many adsorbents such as carbonaceous adsorbents, microporous organic frameworks (MOFs), amorphous microporous/porous organic …
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Experimental Investigation of Synthetic Fines Injection for Enhanced Residual CO2 Trapping during CO2 sequestration
… thesis presents an idea to enhancing residual CO2 trapping by injecting particles carried by the injected CO2. Natural fines migration can enhance residual CO₂ trapping through pore-throat blockage; however, this mechanism is mainly limited to clay-bearing sandstones containing mobile fines …
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Role of Impurities in CO2 Stream During CO2 Injection Process in Heavy Oil Systems
… this study, the impact of impurities/mixtures in CO2 streams during the CO2 injection process as an enhanced oil recovery technique in heavy oil formations was examined. For this purpose, detailed theoretical and experimental studies were conducted to explore the possible effect of …
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Co2 Adsorption On Solid Sorbents
Sorbent-based CO2 capture technology is considered as one of the potential scientific techniques for mitigating greenhouse gas emission. Major advantages of sorbent based adsorption are its low regeneration energy coupled with the elimination of corrosion and equipment degradation characteristic of …
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CO2 Market Design and Operation.
… and operation within the empirical context of CO2 markets. Six case studies are presented which describe business interactions during the design and operation of the Kyoto Protocol, the European Emissions Trading Scheme and the United Kingdom's Carbon Reduction Commitment. The case studies were …
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CO2 Sequestration through Mineral Carbonation
… with global climate change. Carbon dioxide (CO2) is the most prevalent anthropogenic greenhouse gas, and hence reduction of CO2 concentration in the atmosphere has become an important area of research. Subsurface (geologic) storage has been proposed as a target for CO2 storage; physical, …
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Will Nitrogen fixers benefit from rising Atmospheric CO2? The response of Podalyria Sericea to elevated CO2
… and ecosystems to rising levels of atmospheric CO2, the response of individual plants under natural conditions needs to be determined. Podalyria sericea, a fynbos legume, was grown in a greenhouse under ambient (35 Pa) and elevated (70 Pa) CO2 partial pressure for 18 months. Growth, leaf 615N …
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FREE-BASE PORPHYRIN FOR CO2 ACTIVATION
… all the economic sectors play a role in the CO2 production and the complete elimination of the anthropogenic emissions of carbon dioxide is not possible in the short term. Thus, one of the major scientific challenges of this century is to find a solution to this problem. In addition to the …
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Boreal tree stem CO2 flux dynamics
Hiilidioksidilla (CO2) on tärkeä rooli puun toiminnassa, sillä sitä tarvitaan fotosynteesissä, käytetään biomassan kasvatukseen ja vapautetaan soluhengityksessä. Puunrungon CO2 vuo koostuu lähinnä soluhengityksestä, minkä vuoksi ilman lämpötilaa voidaan käyttää vuon ennustamiseen. Suurin osa …
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Research in CO2 reduction by carbonation
… and storage (CCS) as a means of reducing their CO2 outputs. Carbon capture using Calcium oxide is a cost-effective alternative to the current more popular methods such as monoethylamine, which suffer from high regenerative costs and corrosion. The algebraic slip model offers an alternative to …
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Autotrophe CO2-Fixierung in thermophilen Mikroorganismen
… verschiedene Stoffwechselwege zur autotrophen CO2-Fixierung bekannt. Dies sind der Calvin-Zyklus, der reduktive Citrat-Zyklus, der reduktive Acetyl-CoA-Weg und der 3-Hydroxypropionat-Zyklus. Letzterer wurde bisher nur im phototrophen Bakterium Chloroflexus aurantiacus nachgewiesen. <br>In den …
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The Sodium-O2/Co2 Electrochemical Cell
… and metal carbonate discharge products when CO2 and moisture present in ambient air react with metal ions in the cathode. Therefore, when it comes to practical design and operation of metal-air battery, significant new complications that largely defeat the competitive advantages of this …
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CO2-rock interaction during CO2-enriched brine injection into storage reservoirs using NMR integrated with fiber optic sensors
… contributor to global warming. The mitigation of CO2 emissions into the atmosphere is therefore critical, where new technologies need to be urgently developed and employed on a large scale. One promising method is to capture anthropogenic CO2 and store it in geological formations, e.g. depleted …
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