Department of Civil Engineering, University of New Mexico, Albuquerque, NM, USA; Center Micro-Engineered Materials (CMEM), Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, USA.
Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
Bioelectrochemistry. 2018 Jun;121:176-184. doi: 10.1016/j.bioelechem.2018.02.004. Epub 2018 Feb 9.
Microbial desalination cell (MDC) is a bioelectrochemical system capable of oxidizing organics, generating electricity, while reducing the salinity content of brine streams. As it is designed, anion and cation exchange membranes play an important role on the selective removal of ions from the desalination chamber. In this work, sulfonated sodium (Na) poly(ether ether ketone) (SPEEK) cation exchange membranes (CEM) were tested in combination with quaternary ammonium chloride poly(2,6-dimethyl 1,4-phenylene oxide) (QAPPO) anion exchange membrane (AEM). Non-patterned and patterned (varying topographical features) CEMs were investigated and assessed in this work. The results were contrasted against a commercially available CEM. This work used real seawater from the Pacific Ocean in the desalination chamber. The results displayed a high desalination rate and power generation for all the membranes, with a maximum of 78.6±2.0% in salinity reduction and 235±7mWm in power generation for the MDCs with the SPEEK CEM. Desalination rate and power generation achieved are higher with synthesized SPEEK membranes when compared with an available commercial CEM. An optimized combination of these types of membranes substantially improves the performances of MDC, making the system more suitable for real applications.
微生物脱盐电池（MDC）是一种生物电化学系统，能够氧化有机物、发电，同时降低盐水流的盐度含量。在设计中，阴离子和阳离子交换膜在选择性地从脱盐室去除离子方面起着重要作用。在这项工作中，磺化的钠（Na）聚（醚醚酮）（SPEEK）阳离子交换膜（CEM）与季铵盐聚（2,6-二甲基 1,4-苯撑氧化物）（QAPPO）阴离子交换膜（AEM）一起进行了测试。在这项工作中研究和评估了非图案化和图案化（具有不同形貌特征）的 CEM。这项工作在脱盐室中使用了来自太平洋的实际海水。结果显示，所有膜的脱盐率和发电率都很高，带有 SPEEK CEM 的 MDC 的最大脱盐率为 78.6±2.0%，最大发电率为 235±7mWm。与可用的商业 CEM 相比，合成 SPEEK 膜的脱盐率和发电率更高。这些类型的膜的优化组合大大提高了 MDC 的性能，使系统更适合实际应用。
