Disinfection characteristics of an advanced rotational hydrodynamic cavitation reactor in pilot scale
- Title
- Disinfection characteristics of an advanced rotational hydrodynamic cavitation reactor in pilot scale
- Author
- 윤준용
- Keywords
- Water disinfection; Sonochemistry; Hydrodynamic cavitation; E. coli; Disinfection mechanism
- Issue Date
- 2021-04
- Publisher
- ELSEVIER
- Citation
- ULTRASONICS SONOCHEMISTRY, v. 73, Article no. 105543, 9pp
- Abstract
- Hydrodynamic cavitation is a promising technique for water disinfection. In the present paper, the disinfection characteristics of an advanced hydrodynamic cavitation reactor (ARHCR) in pilot scale were studied. The effects of various flow rates (1.4–2.6 m3/h) and rotational speeds (2600–4200 rpm) on the removal of Escherichia coli (E. coli) were revealed and analyzed. The variation regularities of the log reduction and reaction rate constant at various cavitation numbers were established. A disinfection rate of 100% was achieved in only 4 min for 15 L of simulated effluent under 4200 rpm and 1.4 m3/h, with energy efficiency at 0.0499 kWh/L. A comprehensive comparison with previously introduced HCRs demonstrates the superior performance of the presented ARHCR system. The morphological changes in E. coli were studied by scanning electron microscopy. The results indicate that the ARHCR can lead to serious cleavage and surface damages to E. coli, which cannot be obtained by conventional HCRs. Finally, a possible damage mechanism of the ARHCR, including both the hydrodynamical and sonochemical effects, was proposed. The findings of the present study can provide strong support to the fundamental understanding and applications of ARHCRs for water disinfection.
- URI
- https://www.sciencedirect.com/science/article/pii/S1350417721000857?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/166847
- ISSN
- 1350-4177
- DOI
- 10.1016/j.ultsonch.2021.105543
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML