SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (4): 592-597.

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Adsorptive Recovery of Uranium from Nuclear Fuel Industrial Wastewater by Titanium Loaded Collagen Fiber

程远梅1,2, 孙霞2, 廖学品1,2, 石碧2   

  1. 1. School of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
  • 收稿日期:2010-11-15 修回日期:2011-03-22 出版日期:2011-08-28 发布日期:2011-08-28
  • 通讯作者: LIAO Xuepin,E-mail:xpliao@scu.edu.cn;SHI Bi,shibi@scu.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China(20976111)and Sichuan Province Technologies R&D Program (2008GZ0026).

Adsorptive Recovery of Uranium from Nuclear Fuel Industrial Wastewater by Titanium Loaded Collagen Fiber

CHENG YuanMei1,2, SUN Xia2, LIAO Xuepin1,2, SHI Bi2   

  1. 1. School of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
  • Received:2010-11-15 Revised:2011-03-22 Online:2011-08-28 Published:2011-08-28
  • Supported by:
    Supported by the National Natural Science Foundation of China(20976111)and Sichuan Province Technologies R&D Program (2008GZ0026).

摘要: Effective recovery of UO22+ from wastewater is essential for nuclear fuel industry and related industries.In this study, a novel adsorbent was prepared by loading titanium(Ti4+) onto collagen fiber(TICF), and its physical and chemical properties as well as adsorption to UO22+ in nuclear fuel industrial wastewater were investigated.It is found that TICF can effectively recover UO22+ from the wastewater with excellent adsorption capacity.The adsorption capacity is 0.62 mmol·g-1 at 303 K and pH 5.0 when the initial concentration of UO22+ is 1.50 mmol·L-1.The adsorption isotherms can be described by the Langmuir equation and the adsorption capacity increases with temperature.The effect of co-existed F on the adsorption capacity for UO22+ is significant, which can be eliminated by adding aluminum ions as complexing agent, while the other co-existed ions in the solutions, including HCO3-, Cl-, NO3-, Ca2+, Mg2+ and Cu2+, have little effect on the adsorption capacity for UO22+.The saturated TICF after UO22+ adsorption can be regenerated by using 0.2 mol·L-1 nitrate(3) as desorption agent, and the TICF can be reused at least three times.Thus the TICF is a new and effective adsorbent for the recovery of UO22+ from the wastewater.

关键词: collagen fiber, titanium(Ⅳ), adsorption, wastewater

Abstract: Effective recovery of UO22+ from wastewater is essential for nuclear fuel industry and related industries.In this study, a novel adsorbent was prepared by loading titanium(Ti4+) onto collagen fiber(TICF), and its physical and chemical properties as well as adsorption to UO22+ in nuclear fuel industrial wastewater were investigated.It is found that TICF can effectively recover UO22+ from the wastewater with excellent adsorption capacity.The adsorption capacity is 0.62 mmol·g-1 at 303 K and pH 5.0 when the initial concentration of UO22+ is 1.50 mmol·L-1.The adsorption isotherms can be described by the Langmuir equation and the adsorption capacity increases with temperature.The effect of co-existed F on the adsorption capacity for UO22+ is significant, which can be eliminated by adding aluminum ions as complexing agent, while the other co-existed ions in the solutions, including HCO3-, Cl-, NO3-, Ca2+, Mg2+ and Cu2+, have little effect on the adsorption capacity for UO22+.The saturated TICF after UO22+ adsorption can be regenerated by using 0.2 mol·L-1 nitrate(3) as desorption agent, and the TICF can be reused at least three times.Thus the TICF is a new and effective adsorbent for the recovery of UO22+ from the wastewater.

Key words: collagen fiber, titanium(Ⅳ), adsorption, wastewater