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Journal article
Use of plasma gliding arc discharges on the inactivation of E. Coli in water
Separation and purification technology, v 120, pp 423-428
13 Dec 2013
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The objective of the present study was to investigate the feasibility of using a gliding arc (GA) discharge to inactivate microorganisms in water. Microbubble generators were utilized to uniformly disperse gas bubbles that contain H2O2 in water. In addition, the residual effect of H2O2 in plasma-treated water was assessed by continuous quantitative measurement of microbiological colony forming units (cfu) in water after the completion of GA discharge. Application of the GA plasma discharge to water decreased pH from 6.15 to 3.55 after 25-min treatment, and the lowered pH was maintained for 4h after treatment ceased. The present study showed a total 6-log reduction in the cfu counts of Escherichia Coli with plasma treatment of 25min duration: 4-log reduction from 106 to 102 during treatment and an additional 2-log reduction from 102 to 100 during the 2h after treatment. The use of microbubble generators significantly enhanced the benefit of H2O2 in acidic water, increasing the bacterial inactivation ability of the plasma treatment with GA discharge.
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Details
- Title
- Use of plasma gliding arc discharges on the inactivation of E. Coli in water
- Creators
- Hyoung S. Kim - Drexel UniversityYoung I. Cho - Drexel UniversityIn H. Hwang - Jeonbuk National UniversityDong H. Lee - Jeonbuk National UniversityDaniel J. Cho - Energy Onvector, LLC, Camden, NJ, USAAlexander Rabinovich - Drexel UniversityAlexander Fridman - Drexel University
- Publication Details
- Separation and purification technology, v 120, pp 423-428
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- C. and J. Nyheim Plasma Institute; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000330814900055
- Scopus ID
- 2-s2.0-84887483728
- Other Identifier
- 991019167701604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Chemical