Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Study of capturing micro-sized floating polyethylene particles using a bubble

기포를 이용한 미세 부유 폴리에틸렌 입자 포획에 대한 연구

  • Jinyong, Choi (Department of Mechanical Engineering, Seoul National University) ;
  • Hyungmin, Park (Department of Mechanical Engineering, Seoul National University)
  • Received : 2022.10.20
  • Accepted : 2022.11.10
  • Published : 2022.11.30
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Abstract

Underwater environmental pollution caused by microplastic particles is considered to be one of the most serious problems in many oceans and countries nearby. Previous academic studies or field technologies tried to remove the micro-sized particles are often energy-consuming and costly, so it is hard to be employed for the actual uses. In this study, the mechanism of removal of micro-sized polyethylene spheres (size in order of 100㎛) using a rising bubble is experimentally investigated. It is found that the particles are either affected by bubble wake, thus translocated close to the water surface, or pushed far away by the surrounding fluid flow, depending on their initial position relative to the bubble. By scrutinizing the visualized behaviors of bubble-particle interaction, we draw the governing parameter, i.e., the polar angle between the particle and the bubble, to determine the effective capturing of the particles with a rising bubble.

Keywords

Acknowledgement

본 연구는 정부 재원으로 한국연구재단을 통해 미래창조과학부의 중견연구자자원사업(20201A2C2014510) 및 원자력연구개발사업(RS-2022-00144494)의 후원을 받아, 서울대학교 정밀기계 설계공동연구소의 지원으로 수행되었으며, 이에 감사드립니다.

References

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