海水淡化
膜
海水
反渗透
薄膜复合膜
化学
正渗透
浓差极化
化学工程
膜技术
色谱法
环境工程
环境科学
工程类
生物化学
生物
生态学
作者
Ye Li,Saren Qi,Miao Tian,Wentalia Widjajanti,Rong Wang
出处
期刊:Desalination
[Elsevier]
日期:2019-06-18
卷期号:467: 103-112
被引量:83
标识
DOI:10.1016/j.desal.2019.06.005
摘要
This study focuses on enhancing the mechanical strength of aquaporin (AQP)-based biomimetic membranes for seawater desalination. AQP incorporated vesicles were embedded into the selective layer of an optimized thin film composite (TFC) membrane. The resultant membrane, denoted as ASW, exhibited a stable water flux around 20 L·m−2·h−1 and 99% NaCl rejection at a constant pressure of 55 bar using 32,000 mg·L−1 NaCl solution as feed in reverse osmosis (RO) measurement. The robustness of the ASW membranes were evaluated. The water flux of ASW membrane was almost 100% enhanced compared with that of AQP-free control TFC membranes. The filtration performance of the ASW membrane was further evaluated by a seven-day desalination test using a real seawater secondary effluent collected from a desalination plant in Singapore as feed. To our best knowledge, our study is the first report on the AQP-incorporated RO membrane applied for seawater desalination. A commercial SW30HR membrane was tested in parallel for comparison. The robust ASW membrane exhibited a nearly 80% higher water flux in comparison to the SW30HR membrane with a comparable overall solute rejection, suggesting the advantage and feasibility of Aquaporin based biomimetic membranes for seawater desalination.
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