Diffusivity of Oxygen in Molten Lead - Bismuth Eutectic Alloy (44.5% Pb - 55.5% Bi)

Verdaguer, Ariadna; Abella, Jordi

doi:10.1149/1.3268168

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…To date, experimental methods − and numerical simulations − of diffusion coefficient investigation have been reviewed by various researchers. For gas self-diffusivity in liquid, experimental investigations are considered as the most reliable approach such as a bubble dissolution method, pressure decay method, X-ray computer tomography, Raman spectroscopic method, electrochemical method, and laminar liquid jet absorber . However, they are not easy tasks due to the limitation of measurement methods and the sophistication of diffusivity.…”

Section: Introductionmentioning

confidence: 99%

Role of Mutual Diffusion in the Dissolution Behavior of One Primary Bulk Gas Nanobubble in Liquid: A Molecular Dynamics Study

Zhang

Wang

2023

Langmuir

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Dissolution of one primary bulk gas nanobubble in an undersaturated liquid constitutes one of the underlying issues of the exceptional stability of bulk gas nanobubble population. In this paper, the mutual diffusion coefficient at the gas−liquid interface of one primary bulk gas nanobubble is investigated via all-atom molecular dynamics simulation, and the applicability of the Epstein−Plesset theory is verified. The mutual diffusion coefficient, different from the self-diffusion coefficient in bulk gas or bulk liquid, is essentially determined by the chemical potential due to its driving role in the mass transfer across the interface. We could ascribe the low-rate dissolution of one primary bulk gas nanobubble in an undersaturated liquid to the slight attenuation of the mutual diffusion coefficient at the interface. The results show that the dissolution process of one primary bulk gas nanobubble in an undersaturated liquid fundamentally obeys the Epstein−Plesset theory and that the macroscopic dissolution rate is intrinsically determined by the gas mutual diffusion coefficient at the interface rather than the self-diffusion coefficient in the bulk phase. The mass transfer viewpoint from the present study might actively promote subsequent studies on the super-stability of bulk gas nanobubble population in liquid.

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Section: Introductionmentioning

confidence: 99%

Role of Mutual Diffusion in the Dissolution Behavior of One Primary Bulk Gas Nanobubble in Liquid: A Molecular Dynamics Study

Zhang

Wang

2023

Langmuir

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Experimental determination of gas diffusivity in liquids—A review

Upreti

Mehrotra

2021

Can J Chem Eng

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Unit operations and processes abound with gas diffusion in liquids, which is a sophisticated phenomenon in which mass transfer is characterized by diffusion coefficient or diffusivity. Compared to diffusion in gas phase, the closely packed liquid molecules strongly influence diffusive mass transfer to the extent that it is impossible to have a general theory for a reasonably accurate estimation of diffusivity in liquids. This situation is further compounded by the fact that diffusivity cannot be measured directly but can only be estimated indirectly with the help of a number of observable properties (eg, mass, volume, pressure, etc). This fact gives rise to a myriad of experimental methods for the determination of gas diffusivity in liquids. These methods report gas diffusivities over widely varying ranges of temperature, pressure, and liquid composition. To provide a state‐of‐the‐art knowledge base for such methods is the objective of this work. The focus is on gas diffusion in binary gas‐liquid systems. Starting with necessary theoretical foundations, we provide a systematic categorization of these methods based on the property change utilized for diffusivity determination. The methods are then concisely described, and the diffusivity data are summarized for over 160 gas‐liquid systems at different temperature and pressure conditions. Empirical correlations are provided for different gas‐liquid systems, which could be used for interpolating gas diffusivity as a function of temperature, pressure, and composition.

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Diffusivity of Oxygen in Molten Lead - Bismuth Eutectic Alloy (44.5% Pb - 55.5% Bi)

Cited by 2 publications

References 9 publications

Role of Mutual Diffusion in the Dissolution Behavior of One Primary Bulk Gas Nanobubble in Liquid: A Molecular Dynamics Study

Role of Mutual Diffusion in the Dissolution Behavior of One Primary Bulk Gas Nanobubble in Liquid: A Molecular Dynamics Study

Experimental determination of gas diffusivity in liquids—A review

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