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Study on removal of microplastics using magnetic separation
Reo Ueda,Yoko Akiyama,Yuichiro Manabe,Fuminobu Sato 한국초전도저온학회 2022 한국초전도저온공학회논문지 Vol.24 No.3
In recent years, the impact of microplastics (MPs) on ecosystems is a serious problem. Since MPs are difficult to recover oncethey are dispersed into the environment, it is important to remove them at the source. We proposed a magnetic separation of primaryMPs (plastics manufactured in minute sizes) sized 10-100 μm that has not been removed in the sewage process, based on themagnetic seeding process. In this study, we used magnetite as a magnetic seeding agent, and conducted magnetic separationexperiments in the continuous process using a superconducting solenoidal magnet to investigate the feasibility of practical magneticseparation system of MPs. As a result, 85% separation rate was obtained by continuous separation using high gradient magneticseparation (HGMS) with hydrophobically treated magnetite as a magnetic seeding agent.