Journal article
Inactivation of bacteria by the application of spark plasma in produced water
Separation and purification technology, v 156(P2), pp 544-552
17 Dec 2015
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
•The study investigated the effectiveness of spark plasma discharges on the inactivation of acid-producing bacteria (APB) and sulfate-reducing bacteria (SRB) in produced water.•In batch test, 10-min plasma treatment gave 3-log reduction for APB and 2-log reduction for SRB in clear produced water.•In once-through flow test, 2-log reduction for APB and 1-log to 1.5-log reductions for SRB were observed in darkly opaque produced water.•In once-through flow test, the energy efficiency was 1.7kJ/L per 1-log reduction for APB in opaque produced water.•Various reactive oxygen and nitrogen species generated from spark discharges provided the residual effect for the additional inactivation of APB and SRB.
The objective of the present study was to investigate the effectiveness of spark plasma discharges on the inactivation of acid-producing bacteria (APB) and sulfate-reducing bacteria (SRB) in produced water. Tests were conducted in both static batch mode and once-through flow mode. The residual effect of plasma treatment was assessed by two different protocols: immediate incubation after plasma treatment and incubation after 24-h storage in a tank post-treatment. In the batch test, 10-min plasma treatment of water showed a total 3-log reduction of APB and 2-log reduction of SRB based on cfu/mL data in the case of clear produced water. In the once-through flow test, 2-log reduction of APB was observed in the case of clear produced water, whereas 1-log to 1.5-log reductions were observed in the case of darkly opaque produced water. The energy efficiency for the once-through flow test with APB for the opaque produced water was 1.7kJ/L per 1-log reduction. UV radiation together with active plasma species produced by the spark discharge was instrumental in the inactivation of APB and SRB in both clear and dark produced water.
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Details
- Title
- Inactivation of bacteria by the application of spark plasma in produced water
- Creators
- Hyoung-Sup Kim - Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA 19104, USAKamau Wright - Drexel UniversityJoshua Piccioni - Drexel UniversityDaniel J. Cho - Drexel UniversityYoung I. Cho - Drexel University
- Publication Details
- Separation and purification technology, v 156(P2), pp 544-552
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000366537900051
- Scopus ID
- 2-s2.0-84960118755
- Other Identifier
- 991019167615504721
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- Web of Science research areas
- Engineering, Chemical