Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA.
J Chem Phys. 2012 Feb 21;136(7):076101. doi: 10.1063/1.3688226.
The effect of external electric fields on enhancing ion mobility, drift velocity, and drift diffusion as a function of solution concentration has been investigated using molecular dynamics simulations. Our results show that the unusual nonlinear behavior observed when the solution concentration matches seawater is also observed when the concentration is reduced to half of that value. These results are of significance in designing processes for desalinating seawater using electro-deionization in which the concentration would decrease during salt removal, and for purification of brackish waters which also have lower salt content.
使用分子动力学模拟研究了外电场对增强离子迁移率、漂移速度和漂移扩散的影响，以及其与溶液浓度的关系。我们的研究结果表明，当溶液浓度与海水相匹配时，观察到异常的非线性行为，当浓度降低到其一半时，也会观察到这种行为。这些结果对于设计使用电去离子法淡化海水的过程具有重要意义，因为在去除盐分的过程中浓度会降低，对于盐分含量较低的微咸水的净化也具有重要意义。
