Application of a Novel Cold Atmospheric Plasma for Water Decontamination

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In recent years, non-thermal atmospheric plasma has been considered as potential decontamination technology. The plasma can interact with ambient atmosphere and generate a variety of reactive species such as ozone, hydrogen peroxide, radical, atomic and ionic species. Production of ozone in water by cold plasma may have the potential to control aquatic mosquitoes and microorganisms. In this study we used a novel cost effective cold atmospheric air plasma (CAP) system developed by ChiScan LLC. This device is driven by a high voltage at low current to cause dielectric barrier coronal discharge (DBD) without using any kind of noble gas. We conducted laboratory testing on the effect of this CAP technology as a mosquito control measure on both larvae and eggs living in aqueous environments. In addition, its antimicrobial effect in an aqueous environment was tested against . coli as an indicator organism. The testing results demonstrated this novel CAP technology has mosquito larvicidal activity, and is very efficient in inactivating and/or killing mosquito eggs. The antimicrobial effect in an aqueous environment was also observed. There is great promise in application of this novel approach for decontamination of water and improving water quality. This alternative water treatment strategy is ideal for use in resource limited areas and field settings.

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Journal: TechConnect Briefs
Volume: 2, Materials for Energy, Efficiency and Sustainability: TechConnect Briefs 2017
Published: May 14, 2017
Pages: 253 - 256
Industry sector: Energy & Sustainability
Topic: Water Technologies
ISBN: 978-0-9975117-9-6