Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Fabrication of PAN/FZ Beads Via Immobilization of Zeolite Prepared from Coal Fly Ash with Polyacrylonitrile and Their Sr and Cu Removal Characteristics

비산재로부터 합성한 제올라이트를 polyacrylonitrile로 고정화한 PAN/FZ 비드의 제조 및 Sr 및 Cu 이온 제거특성

  • Kam, Sang-Kyu (Department of Environmental Engineering, Jeju National University) ;
  • Lee, Chang-Han (Department of Environmental Adminstration, Catholic University of Pusan) ;
  • Jeong, Kap-Seop (Department of Food Science & Nutrition, Tongmyong University) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
  • 감상규 (제주대학교 환경공학과) ;
  • 이창한 (부산가톨릭대학교 환경행정학과) ;
  • 정갑섭 (동명대학교 식품영양학과) ;
  • 이민규 (부경대학교 화학공학과)
  • Received : 2016.09.07
  • Accepted : 2016.11.17
  • Published : 2016.12.31
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Abstract

Zeolite (FZ), prepared from fly ash, was immobilized with polyacrylonitrile (PAN) to fabricate PAN/FZ beads. The prepared PAN/FZ beads were characterized by scanning electron microscopy, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The optimum ratio to prepare PAN/FZ beads was 0.3 g of PAN to 0.3 g of FZ. The diameter of the prepared PAN/FZ beads was about 3 mm. Sr and Cu ion adsorption experiments were conducted with PAN/FZ beads. A pseudo-second-order model fit the kinetic data for Sr and Cu ion adsorption by PAN/FZ beads well. The equilibrium data fitted well with the Langmuir isotherm model, and the maximum adsorption capacities were 96.5 mg/g and 74.6 mg/g for the Sr and Cu ions, respectively. Additionally, the values of thermodynamic parameters such as Gibbs free energy (${\Delta}G^o$), enthalpy (${\Delta}H^o$) and entropy (${\Delta}S^o$) were determined. The positive values of ${\Delta}H^o$ revealed the endothermic nature of the adsorption process and the negative values of ${\Delta}G^o$ were indicative of the spontaneity of the adsorption process.

Keywords

References

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