School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan, Hubei, 430073, China; Engineering Research Center of Environmental Materials and Membrane Technology of Hubei Province, Wuhan, Hubei, 430073, China.
School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan, Hubei, 430073, China.
Chemosphere. 2018 Sep;206:278-284. doi: 10.1016/j.chemosphere.2018.05.001. Epub 2018 May 2.
AlO-NaA zeolite composite hollow fiber membranes were successfully fabricated via hydrothermal synthesis by using industrial solid waste coal fly ash and porous AlO hollow fiber supports. The as-synthesized AlO-NaA zeolite composite hollow fiber membranes were then characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The hollow fiber membranes were used to remove lead ions (Pb(II), 50 mg L) from synthetic wastewater with a removal efficiency of 99.9% at 0.1 MPa after 12 h of filtration. This study showed that the AlO-NaA zeolite composite hollow fiber membranes (the pore size of the membrane was about 0.41 nm in diameter) synthesized from coal fly ash could be efficiently used for treating low concentration Pb(II) wastewater. It recycled solid waste coal fly ash not only to solve its environment problems, but also can produce high-value AlO-NaA zeolite composite hollow fiber membranes for separation application in treating wastewater containing Pb(II).
AlO-NaA 沸石复合中空纤维膜通过水热合成成功制备，使用工业固体废物粉煤灰和多孔 AlO 中空纤维支撑体。然后通过扫描电子显微镜（SEM）和 X 射线衍射（XRD）对合成的 AlO-NaA 沸石复合中空纤维膜进行了表征。中空纤维膜用于从合成废水中去除铅离子（Pb（II），50mg/L），在过滤 12 小时后，在 0.1MPa 下的去除效率达到 99.9%。本研究表明，由粉煤灰合成的 AlO-NaA 沸石复合中空纤维膜（膜的孔径约为 0.41nm）可有效用于处理低浓度 Pb（II）废水。它不仅回收了粉煤灰这种固体废物，解决了其环境问题，还可以生产高价值的 AlO-NaA 沸石复合中空纤维膜，用于处理含 Pb（II）废水的分离应用。
