Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Evaluation of the Characteristics of High-Flux Reverse Osmosis Membranes with Various Additives

다양한 첨가제에 따른 고투과성 역삼투막의 특성평가

  • Hyun Woong Kwon (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Kwang Seop Im (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Gede Herry Arum Wijaya (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Seong Min Han (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Seong Heon Kim (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Jun Ho Park (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Dong Jun Lee (Department of Materials Engineering and Convergence Technology, Gyeongsang National University) ;
  • Sang Min Eom (Department of Polymer Science & Engineering School of Materials Science & Engineering, Gyeongsang National University) ;
  • Sang Yong Nam (Department of Materials Engineering and Convergence Technology, Gyeongsang National University)
  • 권현웅 (경상국립대학교 나노신소재융합공학과) ;
  • 임광섭 (경상국립대학교 나노신소재융합공학과) ;
  • 위자야 게데 헤리 아룸 (경상국립대학교 나노신소재융합공학과) ;
  • 한성민 (경상국립대학교 나노신소재융합공학과) ;
  • 김성헌 (경상국립대학교 나노신소재융합공학과) ;
  • 박준호 (경상국립대학교 나노신소재융합공학과) ;
  • 이동준 (경상국립대학교 나노신소재융합공학과) ;
  • 엄상민 (경상국립대학교 고분자공학과) ;
  • 남상용 (경상국립대학교 나노신소재융합공학과)
  • Received : 2023.12.08
  • Accepted : 2023.12.19
  • Published : 2023.12.31
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Abstract

In this study, in order to improve the performance of the reverse osmosis membrane with high water flux and high salt rejection, a study was conducted on the evaluation of characteristics according to the curing temperature and time during various additives and interfacial polymerization. The morphology of the membrane with no additives and the membrane with additives both showed a "rigid-and-valley" structure, confirming that the polyamide layer was successfully polymerized on the surface of the porous support layer. In addition, the additive of 2-Ethyl-1,3-hexanediol (EHD) had improved hydrophilicity and water flux, which was confirmed by measuring the contact angle. Finally, a highly permeable TFC membrane with NaCl and MgSO4 salt rejection of 97.78% and 98.7% and a high water flux of 3.31 L/(m2⋅h⋅bar) was prepared.

본 연구에서는 고투과성 및 높은 염 제거율을 가지는 역삼투막의 성능향상을 위하여 다양한 첨가제 및 계면중합 시 경화 온도 및 시간에 따른 특성평가에 대한 연구가 수행되었다. 첨가제가 없는 막과 첨가제를 첨가한 막의 모폴로지는 모두 "ridge-and-valley" 구조를 나타내어, 폴리아미드 층이 다공성 지지층 표면에 성공적으로 중합되었음을 확인하였다. 또한 2-Ethyl-1,3-hexanediol (EHD) 첨가함으로써 향상된 친수성과 수투과율 가졌으며, 이는 접촉각 측정을 통해서 확인되었다. 최종적으로 97.78%와 98.7%의 NaCl 및 MgSO4 제거율과 3.31 L/(m2⋅h⋅bar)의 높은 수투과율을 가진 고투과성 계면중합막을 제조하였다.

Keywords

Acknowledgement

이 논문은 2023년 대한민국 교육부와 한국연구재단의 지원을 받아 수행된 연구임 (NRF- 2020R1A6A1A03038697) 그리고 이 연구는 2023년도 산업통상자원부 및 한국산업기술기획평가원(KEIT) 연구비 지원에 의한 연구임(20019441). 또한 본 연구에서 사용된 UF 지지체를 제공해준 (주)도레이 첨단소재에 감사 인사를 전함.

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