Hydrodynamics and mass transfer characteristics of a single microbubble in liquids with different properties

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2025-03-03 DOI:10.1002/aic.18787

Su-Hang Cai, Li-Hua Wang, Zhi-Xuan Fan, Yong-Rui Xu, Lan Jiang, Xiang-Sen Wu, Jian-Feng Chen, Yong Luo

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引用次数: 0

Abstract

Microbubbles have great potential in enhancing gas-to-liquid mass transfer. However, there is still a lack of systematic research on how the liquid properties affect the hydrodynamics and mass transfer characteristics of a single microbubble. In this work, the diameter, velocity, and mass transfer of a single microbubble in liquids with different properties were analyzed by using high-speed photograph technology. It was found that the rise velocity was minimally affected by the surfactant but decreased with the increase of liquid viscosity. A new velocity correlation was developed to predict the rise velocities of microbubbles, with deviations within 20%. The addition of surfactants and increasing liquid viscosity both reduce the mass transfer coefficient (k_L) compared to ultrapure water. Conversely, k_L increased by 1.3 to 4.1 times as the reactant concentration increased in chemical absorption. This study provides meaningful data to understand the hydrodynamic behaviors and mass transfer characteristics of microbubbles.

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单个微气泡在不同性质液体中的流体力学和传质特性

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.