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Preparation of low-fouling reverse-osmosis membranes on an Al2O3 carrier for desalination exploratory research. Global Energy Interconnection

Zheng M, Wang J, Hou B (2019) Preparation of low-fouling reverse-osmosis membranes on an Al2O3 carrier for desalination exploratory research. Global Energy Interconnection 2(3): 197-204


郑萌,王静,侯保荣(2019)氧化铝载体低污损反渗透膜的制备及其在海水淡化中的应用研究. 全球能源互联网(英文),2(3) : 197-204

Authors:Meng Zheng1,2,Jing Wang1,Baorong Hou1

Institution:1. Institute of Oceanology, China Academy of Sciences, No. 7 Nahai Road, Qingdao 266071, P.R. China;2. Open studio for marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology, No. 1 Wenhai Road, Qingdao 266071, P.R. China

Acknowledgements:This work was supported by the Naional Science and Technology Major Project of China (Title: Study on multi- functional synergistic antifouling coatings and their-supporting anticorrosion coatings, No u1706225).



Biographies

Meng Zheng

received bachelor degree from Qingdao University, Qingdao, China, in 2005. He received master degree from Ocean University of China, Qingdao, China, in 2008. And he received Ph.D. degree from Hokkaido University, Japan, in 2012. He is working in Institute of Oceanology, China Academy of Sciences (IOCAS), Qingdao. His research interests include surface treatment, marine corrosion and protection.

Jing Wang

received bachelor degree from QiLu University of Technology, Jinan, 2003. She received Ph.D. from Dalian University of Technology, Dalian, 2009. She is working  in IOCAS, Qingdao. Her research interest includes marine corrosion and protection.

Baorong Hou

received bachelor degree from Fudan University, Shanghai, 1967. He received Ph.D. degree from Tokyo Institute of  Technology, Japan, 1997. He is the Academician of  Chinese Academy of Engineering. He is working in IOCAS, Qingdao. His research interests include marine corrosion and protection.



Preparation of low-fouling reverse-osmosis membranes on an Al2O3carrier for desalination exploratory research

氧化铝载体低污损反渗透膜的制备及其在海水淡化中的应用研究


Abstract

The surface of an α-Al2O3carrier for semi-permeable zeolite membranes was modified with copper via an electroless plating process. Following hydrothermal synthesis, dense and highly organized zeolite membranes were obtained. Membrane thickness was confined to the nanoscale following layer-by-layer self-assembly of polyelectrolytes with opposite charges. This controllable and low-cost preparation method could drastically reduce the cost of fabricating reverse osmosis membranes, which is highly significant for the realization of large-scale seawater desalination through reverse osmosis. Understanding the influences of interactions between various ions and the zeolite pores, inter-crystalline gaps, membrane structure and surface chemical properties, transmembrane pressure, and temperature on the desalination processwillhelpprovideatheoreticalbasisandreferencepointforthedevelopmentofreverseosmosismembranes.

Keywords

Low-fouling, MFI zeolite membrane, Porous alumina ceramics, Electroless copper plating, Desalination.

Fig.1 SEM images of the porous α-Al2O3 carrier at two magnifications: (a) × 3,000; (b) × 30,000

Fig.2 SEM images of the copper-coated porous α-Al2O3

carrier at two magnifications: (a) × 2,000; (b) × 30,000

Fig.3 SEM images of copper-coated carrier surfaces after electroless plating for (a) 5 min, (b) 10 min, (c) 20 min

Fig.4 SEM images of copper-coated carrier cross sections after electroless plating for (a) 5 min, (b) 10 min, (c) 20 min

Fig.5 XRD pattern of the plated copper coating

Fig.6  Influence of plating time on O2 gas flux

Fig.7 SEM images of a zeolite membrane on copper-coated α-Al2O3 after 12 h hydrothermal synthesis. Magnification: (a) × 5,000; (b) × 30,000

Fig.8 SEM images of a zeolite membrane on copper-coated α-Al2O3 after 48 h hydrothermal synthesis. Magnification:  (a)×800;(b)×3,000

Fig.9 XRD pattern of a ZSM-5 zeolite membrane on a copper-coated α-Al2O3 support

Fig.10 XRD pattern of a ZSM-5 zeolite membrane on a AAO support


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EditorChenyang Liu