Abstract:

A novel adsorbent was prepared by immobilizing titanium onto collagen fiber (TICF), and its adsorption to uranium in wastewater containing fluorine and uranium was investigated in detail.It was found that TICF has high adsorption capacity to UO²⁺₂ and the adsorption capacity is 0.62 mmol U·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 of UO²⁺₂ on TICF is significant, but this effect can be eliminated by adding aluminium nitrate as masking agent.Other co-existed ions, including Cl^-, NO^-₃, Ca²⁺, Mg²⁺, in the solution, have no effect on the adsorption capacity of UO²⁺₂ on TICF, while the co-existed Cu²⁺ has a certain effect.The saturated TICF can be regenerated by using 0.2 mol·L^-1胶原纤维；钛FONT-FAMILY: Calibri,sans-serif, mso-bidi-font-size: 11.0pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体, mso-hansi-font-family: 宋体">(FONT-FAMILY: 宋体, mso-bidi-font-size: 11.0pt, mso-ascii-font-family: Calibri, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">ⅣFONT-FAMILY: Calibri,sans-serif, mso-bidi-font-size: 11.0pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体, mso-hansi-font-family: 宋体">)FONT-FAMILY: 宋体, mso-bidi-font-size: 11.0pt, mso-ascii-font-family: Calibri, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">；吸附；氟铀废水

摘要：

将钛负载在胶原纤维上制备吸附材料(TICF)，并系统研究了该吸附材料对模拟氟铀废水中UO²⁺₂的吸附规律。结果表明：TICF对UO²⁺₂有较强的吸附能力，当温度为303 K、pH为5.0、UO²⁺₂的初始浓度为1.50 mmol·L^-1时，吸附容量达到0.62 mmol U·g^-1；TICF胶原纤维；钛FONT-FAMILY: Calibri,sans-serif, mso-bidi-font-size: 11.0pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体, mso-hansi-font-family: 宋体">(FONT-FAMILY: 宋体, mso-bidi-font-size: 11.0pt, mso-ascii-font-family: Calibri, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">ⅣFONT-FAMILY: Calibri,sans-serif, mso-bidi-font-size: 11.0pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体, mso-hansi-font-family: 宋体">)FONT-FAMILY: 宋体, mso-bidi-font-size: 11.0pt, mso-ascii-font-family: Calibri, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">；吸附；氟铀废水