Linearly scaled-up plasma-water biphasic DBD microreactors: Application to hydrogen peroxide synthesis and water decontamination
Date
2025-11-24
Journal Title
Journal ISSN
Volume Title
Publisher
ACS Sustainable Chemistry & Engineering
Abstract
We previously demonstrated that a modular biphasic liquid water/helium plasma reactor can efficiently produce hydrogen peroxide (H2O2). Here we demonstrate that by increasing the reactor length and thus the residence time or the applied plasma power, we can increase the outlet H2O2 concentration in the aqueous phase (an example of 39 mM is showcased) while using an argon plasma. By introducing spatially resolved optical emission spectroscopy (OES), we reveal an increasing water-produced ·OH radical concentration along the tubular reactor and correlate the ·OH production with the H2O2 concentration. High peroxide concentrations achieved through a straightforward linear reactor scale-up are suitable for green partial oxidation reactions and biochemical and environmental decontamination. This potential is exemplified by showcasing the complete and ultrafast continuous flow decolorization of an aqueous solution of highly concentrated (300 mg L–1) methylene blue (MB).
Description
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry & Engineering Copyright © 2025 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/page/4authors/benefits/index.html#articles-request
This article was originally published in ACS Sustainable Chemistry & Engineering. The version of record is available at: https://doi.org/10.1021/acssuschemeng.5c07296
This article is embargoed until November 24, 2026
Keywords
electrification, pollutant destruction, water purification, dyes, modular manufacturing
Citation
Cameli, F., Dimitrakellis, P., & Vlachos, D. G. (2025). Linearly Scaled-up Plasma–Water Biphasic DBD Microreactors: Application to Hydrogen Peroxide Synthesis and Water Decontamination. ACS Sustainable Chemistry & Engineering. https://doi.org/10.1021/acssuschemeng.5c07296