Influence of bubble size on perfluorooctanesulfonic acid degradation in a pilot scale non-thermal plasma treatment reactor

Alam, David; Lee, Samiuela; Hong, Jungmi; Fletcher, David F.; Liu, Xinying; McClure, Dale; Cook, David; le Nepvou de Carfort, Johan; Krühne, Ulrich; Cullen, P.J.; Kavanagh, John M.

doi:10.1016/j.cej.2024.151349

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.151349

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Influence of bubble size on perfluorooctanesulfonic acid degradation in a pilot scale non-thermal plasma treatment reactor

David Alam,

Samiuela Lee,

Jungmi Hong

et al.

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2024

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Cited by 3 publications

References 32 publications

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Nonthermal plasma technologies for advanced functional material processing and current applications: Opportunities and challenges

Walden,

Goswami,

Scally

et al. 2024

Journal of Environmental Chemical Engineering

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Nonthermal plasma technologies for advanced functional material processing and current applications: Opportunities and challenges

Walden,

Goswami,

Scally

et al. 2024

Journal of Environmental Chemical Engineering

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Estimation of Bubble Size and Gas Dispersion Property in Column Flotation

Kim,

Park

2024

Separations

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This study investigates bubble size measurements, bubble characteristics, and the relationship between key operating variables and gas dispersion properties in column flotation. As the frother concentration increased to 120 ppm, the bubble size distribution (BSD) transformed from bimodal to unimodal and achieved a minimum bubble size of 0.62 mm. The critical coalescence concentration (CCC) was identified as 120 ppm. Gas velocity and wash water velocity significantly influenced bubble size, with gas holdup peaking at 27% at 1.08 cm/s a gas velocity. The bubble-rising velocity increased as the bubble size increased, indicating that the bubble size and bubble-rising velocity were proportional. The bubble surface area flux decreased linearly with increasing bubble size and was significantly affected by the gas velocity. A strong correlation (R2 = 0.86) between measured and calculated bubble sizes was achieved, with an average size of 0.64 mm and an estimation error of ±13%. The study demonstrated that bubble size and distribution could be effectively controlled under specific operational conditions (Jg = 0.65–1.3 cm/s, JW = 0.13–0.52 cm/s, frother = 30–120 ppm). These findings highlight the importance of optimizing key variables to enhance column stability, regime maintenance, and flotation performance.

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Advancing Nanopulsed Plasma Bubbles for the Degradation of Organic Pollutants in Water: From Lab to Pilot Scale

Meropoulis,

Aggelopoulos

2024

Technologies

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The transition from lab-scale studies to pilot-scale applications is a critical step in advancing water remediation technologies. While laboratory experiments provide valuable insights into the underlying mechanisms and method effectiveness, pilot-scale studies are essential for evaluating their practical feasibility and scalability. This progression addresses challenges related to operational conditions, effectiveness and energy requirements in real-world scenarios. In this study, the potential of nanopulsed plasma bubbles, when scaled up from a lab environment, was explored by investigating critical experimental parameters, such as plasma gas, pulse voltage, and pulse repetition rate, while also analyzing plasma-treated water composition. To validate the broad effectiveness of this method, various classes of highly toxic organic pollutants were examined in terms of pollutant degradation efficiency and energy requirements. The pilot-scale plasma bubble reactor generated a high concentration of short-lived reactive species with minimal production of long-lived species. Additionally, successful degradation of all pollutants was achieved in both lab- and pilot-scale setups, with even lower electrical energy-per-order (EEO) values at the pilot scale, 2–3 orders of magnitude lower compared to other advanced oxidation processes. This study aimed to bridge the gap between lab-scale plasma bubbles and upscaled systems, supporting the rapid, effective, and energy-efficient destruction of organic pollutants in water.

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Influence of bubble size on perfluorooctanesulfonic acid degradation in a pilot scale non-thermal plasma treatment reactor

Cited by 3 publications

References 32 publications

Nonthermal plasma technologies for advanced functional material processing and current applications: Opportunities and challenges

Nonthermal plasma technologies for advanced functional material processing and current applications: Opportunities and challenges

Estimation of Bubble Size and Gas Dispersion Property in Column Flotation

Advancing Nanopulsed Plasma Bubbles for the Degradation of Organic Pollutants in Water: From Lab to Pilot Scale

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