Fundamentals and applications of nanobubbles: A review

Foundas, Anastasios; Kosheleva, Ramonna I.; Favvas, Evangelos P.; Kostoglou, Margaritis; Mitropoulos, Athanasios C.; Kyzas, George Z.

doi:10.1016/j.cherd.2022.11.013

Cited by 60 publications

(25 citation statements)

References 200 publications

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“…This increased pressure within the NB is crucial for sustaining its existence and prolonging its lifetime. The collapse of NBs results in the generation of highly localized pressures and temperatures, known as cavitation . The high temperatures and pressures experienced during collapse lead to the formation of ROS specifically hydroxyl radicals ( • OH). − Due to their high reactivity, hydroxyl radicals rapidly react with a broad range of organic contaminants, including pollutants, pathogens, and dyes. ,, …”

Section: Resultsmentioning

confidence: 99%

“…The zeta potential of NBs plays a significant role in determining their stability and behavior within the colloidal system. , Various factors can influence the zeta potential of NBs, including the surface charge and composition of the surrounding liquid medium. , In this case, the presence of ROS could impact the zeta potential of colloidal particles, including NBs. ROS interacts with the surface of particles, leading to surface charge variation that subsequently affects the zeta potential.…”

Section: Resultsmentioning

confidence: 99%

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High Recovery of Ceramic Membrane Cleaning Remediation by Ozone Nanobubble Technology

Rafryanto,

Ramadina,

Nur’aini

et al. 2024

ACS Omega

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The persistent issue of ceramic membrane fouling poses significant challenges to its widespread implementation. To address this concern, ozone nanobubbles (ozone-NBs) have garnered attention due to their remarkable mass transfer efficiency. In this investigation, we present a novel ozone-NB generator system to effectively clean a fouled ceramic membrane that is typically employed in the dye industry. The surface characteristics of the ceramic membrane underwent significant alterations, manifesting incremental changes in surface roughness and foulant accumulation reduction, as evidenced in atomic force microscopy, scanning electron microscopy, X-ray fluorescence, and energy-dispersive spectroscopy. Remarkably, the sequential 4 h cleaning process demonstrates an effective outcome leading to an almost 2-fold enhancement in the membrane flux. The initial fouled state of 608 L/ h/m 2 increased to 1050 L/h/m 2 in the 4 h state with a recovery of 50%. We propose such membrane performance improvement governed by the ozone-NBs with a size distribution of 213.2 nm and a zeta potential value of −20.26 ± 0.13 mV, respectively. This effort showcases a substantial innovative and sustainable technology approach toward proficient foulant removal in water treatment applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

High Recovery of Ceramic Membrane Cleaning Remediation by Ozone Nanobubble Technology

Rafryanto,

Ramadina,

Nur’aini

et al. 2024

ACS Omega

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show abstract

“…The cellular uptake of NBs in cancer cells may also enhance the efficacy and specificity of cancer treatments 4 . This internalization of NBs by cells can be critical for their in vivo stability and bioaccumulation, which are vital for precise therapeutic effects 5 . However, the current methods to detect NBs within cells, primarily relying on fluorescence labelling, are limited by their invasiveness and potential to alter NB behaviour.…”

Section: Introductionmentioning

confidence: 99%

The use of speckle decorrelation OCT to detect nanobubbles in cell pellet aggregates

Javanmardi,

Berndl,

Wegierak

et al. 2024

Biomedical Applications of Light Scattering XIV

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Nanobubbles (NBs) have demonstrable potential for ultrasound imaging and therapeutic applications. Recent studies have even shown their capacity for cellular internalization, which has important implications for their in-vivo stability and bioaccumulation. Traditional methods for observing NBs often involve fluorescence labelling, which can influence NB behaviour. Moreover, these methods are unsuitable for detecting intact (acoustically active) NBs within a cellular environment. This study introduces a label-free approach employing optical coherence tomography (OCT) to investigate the temporal variations in speckle intensity of the OCT backscatter signal of cells interacting with NBs. The temporal variations in the signal intensity of cell aggregates result from the motion of subcellular scatterers within the cellular environment. In this work, we investigate whether internalized NBs modify the temporal variations in the signal intensity. For our experimental imaging set-up, we used a Thorlabs MEMS-VCSEL Swept Source OCT system with a central wavelength of 1300 nm to acquire M-Mode and B-Mode acquisitions. PC3 prostate cancer cells and in-house lipid-shelled NBs were used. The sensitivity of the speckle decorrelation technique was tested on our system using an intensity autocorrelation function on polystyrene microspheres and diluted NBs. Our study demonstrates that speckle decorrelation OCT can effectively detect NBs within a compact cell pellet under specific conditions and was verified using contrastenhanced ultrasound. This approach provides an additional optical method for NB detection within cellular environments and holds the potential for broader applications in detecting NBs in in-vivo applications.

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“…Most review articles related to the application of AWS in FFVs have mostly focused on the specific technology with emphasis on their basic principles, microbial inactivation and safety, and biochemical processes in FFVs (Foudas et al, 2023;Lu et al, 2022;Phan et al, 2021;Rebezov et al, 2022;Soni et al, 2021;Shan et al, 2022;Xiang et al, 2022;Zhang, Wang et al, 2023). Similarly, Heng et al (2022) investigated the synergistic application of acidic EW and PAW against bacterial suspension (E. coli) biofilms (Bacillus subtilis).…”

Section: Introductionmentioning

confidence: 99%

Recent advances in activated water systems for the postharvest management of quality and safety of fresh fruits and vegetables

Malahlela,

Belay,

Mphahlele

et al. 2024

Comp Rev Food Sci Food Safe

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Over the last three decades, decontamination management of fresh fruits and vegetables (FFVs) in the packhouses and along the supply chains has been heavily dependent on chemical‐based wash. This has resulted in the emergence of resistant foodborne pathogens and often the deposition of disinfectant byproducts on FFVs, rendering them unacceptable to consumers. The management of foodborne pathogens, microbial contaminants, and quality of FFVs are a major concern for the horticultural industries and public health. Activated water systems (AWS), such as electrolyzed water, plasma‐activated water, and micro–nano bubbles, have gained significant attention from researchers over the last decade due to their nonthermal and nontoxic mode of action for microbial inactivation and preservation of FFVs quality. The aim of this review is to provide a comprehensive summary of recent progress on the application of AWS and their effects on quality attributes and microbial safety of FFVs. An overview of the different types of AWS and their properties is provided. Furthermore, the review highlights the chemistry behind generation of reactive species and the impact of AWS on the quality attributes of FFVs and on the inactivation/reduction of spoilage and pathogenic microbes (in vivo or in vitro). The mechanisms of action of microorganism inactivation are discussed. Finally, this work highlights challenges and limitations for commercialization and safety and regulation issues of AWS. The synergistic prospect on combining AWS for maximum microorganism inactivation effectiveness is also considered. AWS offers a potential alternative as nonchemical interventions to maintain quality attributes, inactivate spoilage and pathogenic microorganisms, and extend the shelf‐life for FFVs.

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Fundamentals and applications of nanobubbles: A review

Cited by 60 publications

References 200 publications

High Recovery of Ceramic Membrane Cleaning Remediation by Ozone Nanobubble Technology

High Recovery of Ceramic Membrane Cleaning Remediation by Ozone Nanobubble Technology

The use of speckle decorrelation OCT to detect nanobubbles in cell pellet aggregates

Recent advances in activated water systems for the postharvest management of quality and safety of fresh fruits and vegetables

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