Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Study on removal of microplastics using magnetic separation

  • Ueda, Reo (Graduate School of Engineering, Osaka University) ;
  • Akiyama, Yoko (Graduate School of Engineering, Osaka University) ;
  • Manabe, Yuichiro (Graduate School of Engineering, Osaka University) ;
  • Sato, Fuminobu (Graduate School of Engineering, Osaka University)
  • Received : 2022.07.29
  • Accepted : 2022.08.30
  • Published : 2022.09.30
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Abstract

In recent years, the impact of microplastics (MPs) on ecosystems is a serious problem. Since MPs are difficult to recover once they are dispersed into the environment, it is important to remove them at the source. We proposed a magnetic separation of primary MPs (plastics manufactured in minute sizes) sized 10-100 ㎛ that has not been removed in the sewage process, based on the magnetic seeding process. In this study, we used magnetite as a magnetic seeding agent, and conducted magnetic separation experiments in the continuous process using a superconducting solenoidal magnet to investigate the feasibility of practical magnetic separation system of MPs. As a result, 85% separation rate was obtained by continuous separation using high gradient magnetic separation (HGMS) with hydrophobically treated magnetite as a magnetic seeding agent.

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References

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