상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제27권2호
  • /
  • Pages.155-164
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  • 2013
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  • 1225-7672(pISSN)
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  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
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나트륨-버네사이트를 이용한 수용액상의 세슘 및 스트론튬 제거에 관한 연구

A study on removal of cesium and strontium from aqueous solution using synthetic Na-birnessite

  • Cho, Yunchul (Department of Environmental Engineering, Daejeon University) ;
  • Seol, Bit Na (Department of Environmental Engineering, Daejeon University)
  • 투고 : 2013.02.18
  • 심사 : 2013.03.08
  • 발행 : 2013.04.15
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초록

The main purpose of this research was to examine the adsorption/ion exchange characteristics of radioactive species such as cesium and strontium onto synthetic Na-birnessite (sodium-birnessite). As part of efforts to investigate the sorption behavior of cesium and strontium onto synthetic Na-birnessite, batch isotherm tests were performed under different experimental conditions. Na-birnessite was synthesized by the oxidation of $Mn^{2+}$ ions in sodium hydroxide solution. The synthetic Na-birnessite was characterized by powder x-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDS), and Brunauer-Emmett-Teller (BET) surface area analysis. Cesium and strontium concentrations were determined by atomic absorption spectroscopy (AAS). The removal efficiency of strontium by Na-birnessite was around 95 % which was much higher than that of cesium (~ 32 %). The results imply that strontium has a higher affinity for Na-birnessite than cesium because strontium, divalent cation leads to larger electrostatic attraction than monovalent cesium.

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피인용 문헌

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  2. Towards the Extraction of Radioactive Cesium-137 from Water via Graphene/CNT and Nanostructured Prussian Blue Hybrid Nanocomposites: A Review vol.9, pp.5, 2013, https://doi.org/10.3390/nano9050682