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Preparation of Hybrid Beads Containing Polysulfone Modified with Carbon Nanotubes, Tributyl Phosphate and Di-(2-ethylhexyl)-phosphoric Acid and Removal Characteristics of Sr(II)

Polysulfone에 Carbon Nanotubes, Tributyl Phosphate와 Di-(2-ethylhexyl)-phosphoric Acid를 고정화한 하이브리드 비드의 제조와 Sr(II)의 제거 특성

  • Kam, Sang-Kyu (Department of Environmental Engineering, Jeju National University) ;
  • Suh, Jung-Ho (Department of Environmental & Chemical Industry, Ulsan College) ;
  • Yun, Jong-Won (Department of Biotechnology, Daegu University) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyoung National University)
  • 감상규 (제주대학교 환경공학과) ;
  • 서정호 (울산과학대학교 환경화학공업과) ;
  • 윤종원 (대구대학교 생명공학과) ;
  • 이민규 (부경대학교 화학공학과)
  • Received : 2017.12.27
  • Accepted : 2018.02.09
  • Published : 2018.06.10

Abstract

PSf/D2EHPA/TBP/CNTs beads were prepared by immobilizing carbon nanotubes (CNTs) and two extractants, di-(2-ethylhexyl)-phosphoric acid (D2EHPA) and tributyl phosphate (TBP) on polysulfone (PSf). The prepared PSf/D2EHPA/TBP/CNTs beads were characterized by SEM, TGA, and FTIR. The removal rate of Sr(II) by PSf/D2EHPA/TBP/CNTs beads was well described by the pseudo-second-order kinetic model. The maximum removal capacity of Sr(II) obtained from Langmuir isotherm was found to be 5.52 mg/g. The results showed that the removal efficiency of Sr(II) by PSf/D2EHPA/CNTs beads prepared in this study was significantly improved compared to that of using PSf/D2EHPA/CNTs beads without TBP.

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