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A New Interpretation of CO2 Diffusion Experiments
EAGE Annual Conference & Exhibition incorporating SPE Europec, 2013Abstract The injection of CO2 underground has been investigated by many scientists, be it for sequestration or enhanced oil recovery. When CO2 enters the reservoir, the main questions, into which phase the CO2 concentrates first (oil or water) and in which amounts it is going into solution, will be answered.
K. Potsch, P. Toplack, T. Gumpenberger
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Transcutaneous CO2 and O2 diffusion.
Skin pharmacology : the official journal of the Skin Pharmacology Society, 1993Transcutaneous gas measurements offer a useful tool for non-invasive monitoring of skin function, but are affected by several variables that restrict their use in clinical and investigative dermatology. Skin thickness, stratum corneum and barrier function damage, blood vessel reactivity, arterial-gas concentration, skin and environmental temperature ...
E, Berardesca, H, Maibach
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Annular resonators for diffusion cooled CO2-lasers
1994 Conference on Lasers and Electro-Optics Europe, 1994Annular gain geometries provide large surfaces along with compact overall dimensions, which make them promising for compact high power diffusion cooled CO2-lasers (>1 kW). The large surface enables efficient heat removal from the laser gas by heat conduction (diffusion) to the discharge walls.
Dietmar Ehrlichmann +3 more
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Microscopic diffusion of CO2 in clay nanopores
Chemical Physics Letters, 2017Abstract Natural gas production from shale in recent years has made a significant impact on the energy sector. It also presents potential opportunities to mitigate global warming by using shale reservoirs for CO 2 sequestration. We attempt to understand the microscopic impact of shale on CO 2 transport. We utilize equilibrium molecular dynamics (MD)
Hassan Aljama, Jennifer Wilcox
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Diffusion in supercritical mixtures: CO2+ cosolvent + solutes
The Journal of Supercritical Fluids, 1990Abstract Diffusion coefficients are measured for acridine, phenanthrene, and benzoic acid at infinite dilution in either supercritical carbon dioxide, or a mixture of supercritical carbon dioxide with 5.5 mol % methanol as entrainer. These data indicate that diffusion of acridine and benzoic acid are markedly reduced by the presence of small amounts ...
Smith, Scott A. +2 more
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Aquaporins and membrane diffusion of CO2 in living organisms
Biochimica et Biophysica Acta (BBA) - General Subjects, 2014Determination of CO2 diffusion rates in living cells revealed inconsistencies with existing models about the mechanisms of membrane gas transport. Mainly, these discrepancies exist in the determined CO2 diffusion rates of bio-membranes, which were orders of magnitudes below those for pure lipid bilayers or theoretical considerations as well as in the ...
Ralf, Kaldenhoff +2 more
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Self-Diffusion in CO2 at Moderate Pressures
The Journal of Chemical Physics, 1951Diffusion data are presented for the system CO2–C14O2 over a pressure range from 0.50 to 28.1 atmospheres. Within the accuracy of the data, agreement is obtained with the diffusion theory of Enskog and Chapman, using the Lennard-Jones model.
K. D. Timmerhaus, H. G. Drickamer
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Diffusion of methanol–liquid CO2 and methanol–supercritical CO2 in silica aerogels
Journal of Non-Crystalline Solids, 1997Abstract Drying of alcogel is the most critical step in production of transparent and monolithic silica aerogel. If alcohol extraction with liquid or supercritical carbon dioxide is used, diffusion of alcohol through the alcogel to the CO2 plays an important role.
Zoran Novak, Željko Knez
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Composition Dependence of the Thermal-Diffusion Factors in He–CO2, Ne–CO2, and Xe–CO2 Mixtures
The Journal of Chemical Physics, 1968The composition dependence of the thermal-diffusion factor in mixtures of carbon dioxide with helium, neon, and xenon has been studied with the help of an all-glass eight-tube trennschaukel or swing separator. In the case of He–CO2 and Ne–CO2 mixtures, α is found to increase with increasing concentration of the lighter component while in the Xe–CO2 ...
A. K. Batabyal, A. K. Barua
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The Effect of Diffusion Potentials on Facilitated CO2 Diffusion
1980Bicarbonate-facilitated CO2 transport is, as described elsewhere in this section, of long-standing biological and industrial interest. It can be said to date back at least half a century to A.V. Hill’s (1928) comment on August Krogh’s (1918–1919) measurements of tissue O2 and CO2 permeabilities: “It seems rather curious that the larger molecule should ...
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