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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/36782

Title: Microbubble-enhanced DBD plasma reactor: Design, characterisation and modelling
Authors: Wright, Alexander R.P.
Taglioli, Matteo
Montazersadgh, Faraz
Shaw, Alexander H.
Iza, Felipe
Bandulasena, Hemaka C.H.
Keywords: Microbubbles
Finite element method
Ozone
Airlift loop
DBD plasma
Issue Date: 2019
Publisher: Elsevier © Institution of Chemical Engineers
Citation: WRIGHT, A.R.P. ... et al., 2019. Microbubble-enhanced DBD plasma reactor: Design, characterisation and modelling. Chemical Engineering Research and Design, 144, pp.159-173.
Abstract: The emerging field of atmospheric pressure plasmas (APPs) for treatment of various solutions and suspensions has led to a variety of plasma reactors and power sources. This article reports on the design, characterisation and modelling of a novel plasma-microbubble reactor that forms a dielectric barrier discharge (DBD) at the gas-liquid interface to facilitate the transfer of short-lived highly reactive species from the gas plasma into the liquid phase. The use of microbubbles enabled efficient dispersion of long-lived reactive species in the liquid and UVC-induced oxidation reactions are triggered by the plasma radiation at the gas-liquid interface. A numerical model was developed to understand the dynamics of the reactor, and the model was validated using experimental measurements. Fluid velocities in the riser region of the reactor were found to be an order of magnitude higher for smaller bubbles (~500 µm diameter) than for larger bubbles (~2500 µm diameter); hence provided well-mixed conditions for treatment. In addition to other reactive oxygen species (ROS) and reactive nitrogen species (RNS), 2 a dissolved ozone concentration of 3 µM was recoded after a 15-minute operation of the reactor, demonstrating the suitability of this design for various applications.
Description: This paper is in closed access until 8 February 2020.
Sponsor: The authors would like to acknowledge grants POC-HD_RD0300 C from Plants to Products network of BBSRC NIBB and BB/L013819/1.
Version: Accepted for publication
DOI: 10.1016/j.cherd.2019.01.030
URI: https://dspace.lboro.ac.uk/2134/36782
Publisher Link: https://doi.org/10.1016/j.cherd.2019.01.030
ISSN: 1744-3563
Appears in Collections:Closed Access (Mechanical, Electrical and Manufacturing Engineering)
Closed Access (Chemical Engineering)

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