仿生水通道蛋白膜用于渗透膜生物反应器：膜性能和污染物去除。
Biomimetic aquaporin membranes for osmotic membrane bioreactors: Membrane performance and contaminant removal.
机构信息
Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Strategic Water Infrastructure Laboratory, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia.
Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, Melbourne, VIC 8001, Australia.
出版信息
Bioresour Technol. 2018 Feb;249:62-68. doi: 10.1016/j.biortech.2017.09.170. Epub 2017 Sep 27.
In this study, we investigated the performance of an osmotic membrane bioreactor (OMBR) enabled by a novel biomimetic aquaporin forward osmosis (FO) membrane. Membrane performance and removal of 30 trace organic contaminants (TrOCs) were examined. Results show that the aquaporin FO membrane had better transport properties in comparison with conventional cellulose triacetate and polyamide thin-film composite FO membranes. In particular, the aquaporin FO membrane exhibited much lower salt permeability and thus smaller reverse salt flux, resulting in a less severe salinity build-up in the bioreactor during OMBR operation. During OMBR operation, the aquaporin FO membrane well complemented biological treatment for stable and excellent contaminant removal. All 30 TrOCs selected here were removed by over 85% regardless of their diverse properties. Such high and stable contaminant removal over OMBR operation also indicates the stability and compatibility of the aquaporin FO membrane in combination with activated sludge treatment.
在这项研究中，我们考察了一种新型仿生水通道蛋白正向渗透（FO）膜在渗透膜生物反应器（OMBR）中的性能。我们检测了膜性能和 30 种痕量有机污染物（TrOCs）的去除效果。结果表明，与传统的纤维素三醋酸酯和聚酰胺薄膜复合 FO 膜相比，水通道蛋白 FO 膜具有更好的传输性能。特别是，水通道蛋白 FO 膜表现出更低的盐透过率，因此反向盐通量更小，从而在 OMBR 运行过程中在生物反应器中形成的盐度积累更少。在 OMBR 运行过程中，水通道蛋白 FO 膜很好地补充了生物处理，实现了稳定且优异的污染物去除效果。所有 30 种选择的 TrOCs 都被去除了 85%以上，无论它们的性质如何。这种在 OMBR 运行过程中保持的高且稳定的污染物去除率也表明了水通道蛋白 FO 膜与活性污泥处理相结合的稳定性和兼容性。
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