Hydrocarbons enhanced generation of surface nanobubbles by ethanol-water exchange

Fang, Hengxin; Zhou, Yong; Wang, Xingya; Zhou, Limin; Zhang, Lijuan; Hu, Jun; Sun, Chang Q.; Wang, Biao

doi:10.1016/j.colsurfa.2023.132842

Colloids and Surfaces A: Physicochemical and Engineering Aspect

2024

DOI: 10.1016/j.colsurfa.2023.132842

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Hydrocarbons enhanced generation of surface nanobubbles by ethanol-water exchange

Hengxin Fang,

Yong Zhou,

Xingya Wang

et al.

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2024

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Cited by 2 publications

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“…This phenomenon occurs because the high internal pressure of nanobubbles, derived from their nanometer size, intensifies their concentration [51,52], and effective mixing strategies within the bioreactor facilitate uniform distribution of the nanobubbles without premature coalescence or breakup, thus maintaining their ability to enhance mass transfer. These strategies ensure that nanobubbles interact effectively with the medium, releasing gases in a controlled and sustained manner, which improves their availability for metabolic reactions in biological processes [53,54].…”

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Use of Nanobubbles to Improve Mass Transfer in Bioprocesses

Silva,

Arias-Torres,

Carlesi

et al. 2024

Processes

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Nanobubble technology has emerged as a transformative approach in bioprocessing, significantly enhancing mass-transfer efficiency for effective microbial activity. Characterized by their nanometric size and high internal pressure, nanobubbles possess distinct properties such as prolonged stability and minimal rise velocities, allowing them to remain suspended in liquid media for extended periods. These features are particularly beneficial in bioprocesses involving aerobic strains, where they help overcome common obstacles, such as increased culture viscosity and diffusion limitations, that traditionally impede efficient mass transfer. For instance, in an experimental setup, nanobubble aeration achieved 10% higher soluble chemical oxygen demand (sCOD) removal compared to traditional aeration methods. Additionally, nanobubble-aerated systems demonstrated a 55.03% increase in caproic acid concentration when supplemented with air nanobubble water, reaching up to 15.10 g/L. These results underscore the potential of nanobubble technology for optimizing bioprocess efficiency and sustainability. This review delineates the important role of the mass-transfer coefficient (kL) in evaluating these interactions and underscores the significance of nanobubbles in improving bioprocess efficiency. The integration of nanobubble technology in bioprocessing not only improves gas exchange and substrate utilization but also bolsters microbial growth and metabolic performance. The potential of nanobubble technology to improve the mass-transfer efficiency in biotechnological applications is supported by emerging research. However, to fully leverage these benefits, it is essential to conduct further empirical studies to specifically assess their impacts on bioprocess efficacy and scalability. Such research will provide the necessary data to validate the practical applications of nanobubbles and identify any limitations that need to be addressed in industrial settings.

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confidence: 99%

Use of Nanobubbles to Improve Mass Transfer in Bioprocesses

Silva,

Arias-Torres,

Carlesi

et al. 2024

Processes

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Advancing nanobubble technology for carbon-neutral water treatment and enhanced environmental sustainability

Singh,

Kumar,

2024

Environmental Research

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Hydrocarbons enhanced generation of surface nanobubbles by ethanol-water exchange

Cited by 2 publications

References 53 publications

Use of Nanobubbles to Improve Mass Transfer in Bioprocesses

Use of Nanobubbles to Improve Mass Transfer in Bioprocesses

Advancing nanobubble technology for carbon-neutral water treatment and enhanced environmental sustainability

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