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Showing 1 to 16 of 16 for “"CO2 removal"”.
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Optimizing the structure and plasticization resistance of asymmetric polyimide hollow fiber membranes for CO2 removal from natural gas
… properties. Asymmetric hollow fibers with CO2/CH4 separation factors up to 67 were successfully fabricated under the optimum fabrication conditions. Our further thermodynamic analysis based on Hansen’s solubility parameter and kinetic analysis based on Hayduk and Minhas correlations …
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Achieving net-zero CO2 emissions from indirect co-combustion of biomass and natural gas with carbon capture using a novel amine blend
… levels of greenhouse gases, particularly CO2, in the atmosphere, the need to minimize CO2 emissions into the atmosphere has become very crucial. The energy sector remains the largest source of CO2 emissions, therefore, a technology which allows for achieving netzero CO2 emissions in this …
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Application Of Composite Polymeric Membranes For Efficient Regeneration Of Physical Solvents
<p>The most dominant CO2 capture technology used for pre-combustion capture involves the application of physical solvents. Despite the low energy required to regenerate physical solvents and their high capacity for capturing and separating acid gases from the syngas produced in a gasification …
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Determining timescales of natural carbonation of peridotite in the Samail Ophiolite, Sultanate of Oman
… to mitigate the buildup of anthropogenic CO2 emissions in the atmosphere. Timescales of natural carbonation of peridotite were investigated in the mantle layer of the Samail Ophiolite, Sultanate of Oman. Rates of ongoing, low-temperature CO2 uptake were estimated through 14C and 230Th …
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Remoção de CO2 do biogás por permeação em membranas
… mainly of methane (CH4 ) and carbon dioxide (CO2 ). Among the alternatives to reuse it, purification for injection into the natural gas grid is the most interesting option from an economical point of view. Biogas purification requires the removal of CO2 and other contaminants. Taking into …
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CO2 Adsorption on Polyethylenimine-Impregnated Lamellar Silica
… gases on the world climate requires the removal and sequestration of large quantities of anthropogenic carbon dioxide (CO2). This work is contributed towards the development of efficient, amine-containing, lamellar structured silica adsorbents for CO2 removal. Seven different materials …
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Revisiting Beachrock Cementation Processes
… can be attributed to seawater with dissolved CO2 13C values in the range of 0 to 2 ‰of. However, at depth we infer that oxidation of organic matter has modified seawater 13C to produce lighter 13C values. In Hatillo, the oxidation of organic matter is interpreted as the drive for …
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Extrakorporale Membranoxygenierung mit dem DeltaStream-System bei experimentell induziertem akutem Lungenversagen
… oxygenators allowed an efficacious CO2 removal in all animals. However, only in 2 animals a marked increase in PaO2 was notable. In conclusion, the use of the DeltaStream-system in our study was not associated with major blood damage, thrombus formation or hemodynamic impairment. …
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CO2 absorption into concentrated carbonate solutions with promoters at elevated temperatures
As atmospheric carbon dioxide (CO2) emissions continue to increase, it becomes important to develop methods to capture CO2 from large emission sources such as power plants. The Hot Carbonate Absorption Process with Crystallization Enabled High Pressure Stripping (Hot-CAP), which employs a …
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Untersuchungen zum Alkaliverhalten unter Oxycoal-Bedingungen
… power plant concepts which would allow easy CO2 removal from the exhaust products. These processes are based on the combustion of coal with recirculated flue gas that has been enriched in oxygen. To ensure the energy efficiency the oxygen may be provided by a high temperature oxygen membrane. …
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Mixed layer nitrogen cycling in the Southern Ocean: seasonality, kinetics, and biogeochemical implications
… of the Southern Ocean in setting atmospheric CO2. However, active cycling of nitrogen (N) in the seasonally-varying mixed layer – including the production of ammonium and its subsequent removal via phytoplankton uptake and nitrification (i.e., the oxidation of ammonium to nitrite and then …
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Experimental And Simulative Studies For Evaluating Desorption Performance With Blended Amine Solvents In Post-Combustion CO2: Capture Systems
… is a very important process to liberate CO2 from CO2 saturated rich solution by adding thermal energy provided by a reboiler. This process should be studied very seriously for improving economic efficiency because fresh solvent for every cycle of capture is very expensive and also up to …
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Phytoplankton's role in the biological pump during the growth season across the Atlantic Southern Ocean
… (“new production”) can be equated to atmospheric CO2 removal, while growth fuelled by ammonium and urea (“regenerated production”) results in no net CO2 drawdown. As such, once phytoplankton begin assimilating the nitrate supplied from the subsurface, the upper Southern Ocean ecosystem starts …
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Reaction Kinetics and Dissociation constants of Tertiary Alkanolamines for Carbon Capture
… research work studies the absorption kinetics of CO2 into aqueous solutions of four amines; {1-[Bis [3-(dimethylamino) propyl] amino]-2-propanol, N, n, n′, n′′, n′′-pentamethyldiethylenetriamine, N, n, n′, n′-tetrakis (2-hydroxyethyl) ethylenediamine, and N, n, n′, n′-tetrakis (2-hydroxypropyl) …
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Environmental Impacts of Future Aviation Propulsion Systems
… for contrail avoidance; and (4) atmospheric CO2 removal with geological storage at small scale (1% of geological storage potential) to address GHG emissions which are otherwise prohibitively expensive to avoid. The proposed system reduces the combined climate and air quality impacts by 99% …
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Adsorption–Desorption Reactions in the Weathering Zone: Implications for Silicate Weathering & the Carbon Cycle
… of silicate minerals removes carbon dioxide (CO2) from Earth's atmosphere. The tectonic processes of uplift, exhumation, and erosion modulate the negative feedback relationship between climate, silicate weathering rates, and atmospheric CO2 removal rates by controlling the exposure rate of …