超亲水性金属有机框架膜对油水混合物的高效分离及传质机理  

Efficient Separation and Mass Transfer Mechanism of Oil/Water Mixtures by Super-hydrophilic Metal-organic Framework Membrane

作　　者：何璇婷 李博宇 陶文铨[1] 李卓[1] HE Xuanting;LI Boyu;TAO Wenquan;LI Zhuo(College of Environmental Science and Engineering,Tongji University,Shanghai 200092)

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《工程热物理学报》2023年第5期1390-1394,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金面上项目(No.52076152);中央高校基本科研业务费专项资金资助。

摘　　要：化工废水大量排放和漏油、溢油事故频发对环境保护和生态平衡造成巨大的影响。本文提出了一种简单、节能、环保友好的金属有机框架膜制备方法用于油水分离。采用电化学方法在铜网上沉积金属有机框架材料获得超亲水性膜(Cu-CAT-1@铜网)。在重力驱动下,Cu-CAT-1@铜网膜能快速分离各种油/水混合物,分离效率大于95.0%,水通量大于112 kL·m^(-2)·h^(-1)。其分离性能高于大部分报道的铜网基底膜,并具有良好的重复性和可回收性。该膜传质机理主要基于Cu-CAT-1的超亲水性和水下超疏油性达到高效分离含油污水。A large number of chemical wastewater discharge,oil leakage and oil spill accidents have caused a huge impact on environmental protection and ecological balance.We here developed a simple,energy saving and environmentally friendly method to fabricate metal organic frameworks(MOFs)-based membrane.Cu-CAT-1 was successfully deposited on a copper mesh to obtain the membrane of Cu-CAT-1@copper mesh by using electrodeposited.Under the action of gravity,the membrane can quickly separate a serious of oil/water mixtures,with the separation efficiency over 95.0% and water flux higher than 112 kL·m^(-2)·h^(-1).Its separation performance is better than those reported copper mesh based membranes,and also showed good reproducibility and recyclability.The mass transfer mechanism of the membrane is mainly based on the super-hydrophilic and underwater super-hydrophobic properties of Cu-CAT-1 to achieve effective separation for oily wastewater.

关 键 词：油水分离 膜 金属有机框架材料 超亲水/水下超疏油 

分 类 号：X703[环境科学与工程—环境工程]