使用 N1633 作为载体的平面更新膜反应器去除矿山废水中的聚钨酸盐。
Removal of Polytungstate from Mine Wastewater Using a Flat Renewal Membrane Reactor with N1633 as a Carrier.
机构信息
National Engineering Technology Research Center for Desert-Oasis Ecological Construction, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.
Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.
出版信息
Int J Environ Res Public Health. 2022 Sep 5;19(17):11092. doi: 10.3390/ijerph191711092.
A novel flat renewal membrane reactor (FRMR) with mixed amine extractant N1633 dissolved in kerosene and NaOH solvent was studied for the removal of polytungstate [expressed as WO or W (VI)] from simulated mine wastewater. FRMR contains three parts: the feeding cell, reacting cell and renewal cell. A flat membrane of polyacrylonitrile (PAN) was used in the reacting cell, which used mixed solutions of kerosene and NaOH. The amine extractant (N1633) was used as the carrier, and simulated mine wastewater containing polytungstate was used as the feeding solution. The influencing factors of the pH and the other ion strengths in the feeding solutions, the volume ratio of kerosene to NaOH solution, and the N1633 concentration in the renewal solutions were investigated in order to obtain the optimum technique parameters. It was found that the removal percentage of polytungstate could reach 92.5% in 205 min, when the concentration of the carrier (N1633) was 0.18 mol/L, the volume ratio of kerosene and NaOH in the renewal cell was 3:2, the pH in the feeding cell was 4.00, and the initial concentration of polytungstate was 3.50 × 10 mol/L. The stability and feasibility of FRMR were tested by the investigation of polytungstate retention and the reuse of the membrane.
一种新型的平板更新膜反应器（FRMR），其中含有溶解在煤油和 NaOH 溶剂中的混合胺萃取剂 N1633，用于从模拟矿山废水中去除聚钨酸盐[表示为 WO 或 W（VI）]。FRMR 包含三个部分：进料室、反应室和更新室。反应室中使用聚丙稀腈（PAN）的平板膜，其中含有煤油和 NaOH 的混合溶液。胺萃取剂（N1633）用作载体，模拟矿山废水中含有聚钨酸盐作为进料溶液。考察了进料溶液的 pH 值和其他离子强度、煤油与 NaOH 溶液的体积比以及更新溶液中 N1633 浓度等因素，以获得最佳的技术参数。结果发现，当载体（N1633）浓度为 0.18 mol/L、更新室中煤油与 NaOH 的体积比为 3:2、进料室的 pH 值为 4.00、初始聚钨酸盐浓度为 3.50×10-3mol/L 时，聚钨酸盐的去除率可在 205 min 内达到 92.5%。通过考察聚钨酸盐的保留率和膜的重复使用，验证了 FRMR 的稳定性和可行性。
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