Gas dissolution process of spherical rising gas bubbles

Takemura, Fumio; Yabe, Akira

doi:10.1016/s0009-2509(98)00094-3

Cited by 131 publications

(69 citation statements)

References 20 publications

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“…The term "excess air" is retained, although noble gas data of numerous field studies indicate that the composition of the excess gas does not correspond to atmospheric air (8). Excess air and its fractionation affects the interpretation of gas concentrations in groundwater [e.g., in noble gas based paleoclimate reconstruction (9)(10)(11)(12), in groundwater dating with the 3 H- 3 He method (12)(13)(14), or with SF6 (15)]. Simplified models describing the dissolved gas concentrations in the final state after interaction with entrapped air have been employed to estimate excess air and its composition (9,11).…”

Section: Introductionmentioning

confidence: 99%

Kinetic Model of Gas Bubble Dissolution in Groundwater and Its Implications for the Dissolved Gas Composition

Holocher

Peeters

Aeschbach–Hertig

et al. 2003

Environ. Sci. Technol.

129

116

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Bubble-mediated mass transfer is of major importance for the gas exchange between soil air and groundwater. The presence of entrapped air bubbles in the upper, quasisaturated aquifer zone can crucially affect the interpretation of atmospheric trace gas concentrations in groundwater and associated fluids as well as intrinsic and enhanced bioremediation procedures that rely on the actual dissolved gas content of gases such as oxygen or nitrogen. To describe the bubble-mediated gas exchange in detail, a kinetic multi-species model for dissolved gas transport in a porous medium including inter-phase mass transfer with entrapped gas bubbles was developed. It takes into account changes in the entrapped gas bubble sizes resulting from the mass exchange and therefore allows the quantification of mass transfer between bubbles of any gas composition and flowing or stagnating water in a substrate column. Considering the dissolution of entrapped air bubbles, the resulting concentrations of dissolved atmospheric gases significantly exceed their solubility equilibrium concentrations. The temporal evolution of the composition of this excess gas is controlled by the solubility and the molecular diffusivity of the gases considered, by the flow conditions, and by the physical properties of the aquifer such as the ratio of entrapped air to water in the pore space. In the case of noble gases in a through-flow system, solubility differences appear to be more important for the composition of the gas excess than the differences between molecular diffusivities.

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Section: Introductionmentioning

confidence: 99%

Kinetic Model of Gas Bubble Dissolution in Groundwater and Its Implications for the Dissolved Gas Composition

Holocher

Peeters

Aeschbach–Hertig

et al. 2003

Environ. Sci. Technol.

129

116

View full text Add to dashboard Cite

show abstract

“…The dissolution rate of bubble interior gas known as the Sherwood number, Sh, is a dimensionless number and is described as 11) Sh…”

Section: Velocity Of Bubble Shrinkingmentioning

confidence: 99%

Lifetime Estimation of Microbubble in Mercury

Naoe

Hasegawa

Bucheeri

et al. 2008

Journal of Nuclear Science and Technology

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“…In the case of beer haze, this method is compromised by continued growth of bubbles in the saturated solution [6]. Ultrasound requires a relatively dilute system and is compromised by re-scattering.…”

Section: Introductionmentioning

confidence: 99%

“…Optical fiber probes [6] and electrical probes make use of differences in properties of the bubble and medium, to make local measurements of bubble penetration length and gas hold-up. These techniques have a minimum measurable bubble size and intrude into the vessel, which may later the gas-liquid flow pattern [4,6].…”

Section: Introductionmentioning

confidence: 99%