Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Development of Prussian Blue-laden Magnetic Janus Micro-adsorbents for Remediation of Cs+ Ions in Wastewater

프러시안 블루가 함입된 자성 야누스 미세 흡착제 개발 및 이를 이용한 폐수 내 세슘정화

  • Ju-Eon Jung (Department of Green Chemical Engineering, Sangmyung University) ;
  • Dong-Hyeon Kyoung (Department of Green Chemical Engineering, Sangmyung University) ;
  • Sung-Min Kang (Department of Green Chemical Engineering, Sangmyung University)
  • 정주언 (상명대학교 그린화학공학과) ;
  • 경동현 (상명대학교 그린화학공학과) ;
  • 강성민 (상명대학교 그린화학공학과)
  • Received : 2024.02.19
  • Accepted : 2024.03.13
  • Published : 2024.05.01
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Abstract

Here, we develop a centrifugal microfluidic reactor with simple, fast, and high-throughput manner for the generation of magnetic Janus micro-adsorbents (MAs). By using the multi-micronozzle consisting of two separate aligned needles and centrifugal tubes, we have synthesized highly monodispersed Prussian blue- and magnetic nanoparticle-laden micro-adsorbents (PB-MNP-MAs). The enhanced cesium (Cs+) adsorption was demonstrated by conducting the adsorption isotherm and kinetics experiment which can be contributed to the porous nature of the Ca-alginate networks with a high surface area of embedded PB nanoparticles, resulting to perform rapid adsorption activity within 10 min. After Cs+ adsorption process, the as-synthesized PB-MNP-MAs were successfully harvested by introducing the external magnetic fields. Therefore, we believe that our findings can be provided new direction towards the development of advanced functional adsorbents in biological and environmental fields.

본 연구는 자성 야누스 미세 흡착제를 합성하기 위해 쉽고 빠르며 대량생산이 가능한 원심력 기반 미세유체 반응기를 개발하였다. 두 개의 정렬된 주사침과 원심분리 튜브로 구성된 다중 미세노즐을 사용함으로써 높은 균일도를 갖는 프러시안 블루와 자성 나노입자의 함입이 이루어진 미세 흡착제(PB-MNP-MAs)를 합성하였다. 등온흡착과 흡착속도 실험을 통해 다공성 구조 및 프러시안 블루 나노입자의 넓은 비표면적을 갖는 미세 흡착제의 향상된 세슘 흡착 성능을 증명하였으며 이를 통해 10분 이내의 빠른 흡착을 유도할 수 있다. 흡착 공정 후, 외부 자기장 도입을 통해 세슘 수용액 내에서 합성된 PB-MNP-MAs를 성공적으로 회수하였다. 따라서 본 연구결과를 바탕으로 생물 및 환경 제염 분야에서 기능성 흡착제 발전을 위한 새로운 방향성을 제공해 줄 것으로 기대한다.

Keywords

Acknowledgement

연구는 2023학년도 상명대학교 교내연구비를 지원받아 수행하였음(2023-A000-0096).

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