Membrane Adsorber Comprising Zeolitic Imidazolate Framework for Removal of Die Molecules

• Main Authors: Hsiang Ting, 丁翔
• Other Authors: Dun-Yen Kang
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/8u765v

碩士 === 國立臺灣大學 === 化學工程學研究所 === 105 === We investigate a novel membrane adsorber comprising metal-organic frameworks (MOFs) for water treatment. Two types of MOF (ZIF-8 and ZIF-L) were grown within a porous α-alumina support to form a membrane for the adsorption of the die molecule, Rose Bengal, in aqueous phase. The external surface of the ZIF-L was shown to possess a strong affinity for Rose Bengal. We also observed that small crystals (with large external surface area) are beneficial to adsorption. The surfactant CTAB was used in the synthesis of ZIF-L-based membrane adsorber in order to reduce the size of ZIF-L particles and increase the loading of ZIF-L within the membrane. The membrane adsorber with the highest concentration of CTAB achieved the highest dynamic adsorption capacity. ZIF-L-based membrane adsorbers exhibited water permeance (10000 L/m2/bar/h) far exceeding that of most existing membrane adsorbers.