皮胶原纤维负载钦对核工业废水中铀的去除(英文)

Effective recovery of UO2+2 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 UO2+2 in nuclear fuel industrial wastewater were investigated.It is found that TICF can effectively recover UO2+2 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 UO2+2 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 UO2+2 is significant,which can be eliminated by adding aluminum ions as complexing agent,while the other co-existed ions in the solutions,including HCO-3,Cl-,NO-3,Ca2+,Mg2+ and Cu2+,have little effect on the adsorption capacity for UO2+2.The saturated TICF after UO2+2 adsorption can be regenerated by using 0.2 mol·L-1 nitrate(HNO-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 UO2+2 from the wastewater.

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

Effective recovery of 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 in nuclear fuel industrial wastewater were investigated. It is found that TICF can effectively recover 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 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 on the adsorption capacity for is significant, which can be eliminated by adding aluminum ions as complexing agent, while the other co-existed ions in the solutions, including , , , Ca2+, Mg2+ and Cu2+, have little effect on the adsorption capacity for . The saturated TICF after adsorption can be regenerated by using 0.2 mol•L1 nitrate (HNO3) 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 from the wastewater.