Asymmetric Electric Field Enhanced Membrane Distillation |
Authors: MIAO Chengpeng1,DU Wenlin1,CHEN Jia1,MENG Huilin2,SHI Xueli2,WANG Nannan1,DU Runhong1 |
Units: 1. State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300160, China 2. Membrane Industry Association of China, Beijing 100029, China |
KeyWords: membrane distillation; electric field; electric potential gradient |
ClassificationCode:TQ028.8 |
year,volume(issue):pagination: 2016,36(2):55-59 |
Abstract: |
Polar molecules orient and migrate in an asymmetric electric field. Providing an asymmetric electric field across a membrane in a membrane distillation process for water treatment, thetransport of water will be driven by the pressure gradient and the electric potential gradient, and thus the water permeation will be accelerated in the pressure-electric coupled field. Salts and macromolecules are nonvolatile and thetransport of these solutes willnot be affected by the electric field. Therefore, by applying the asymmetric electric field, both the water flux and the separation can be improved. The mass transport of water molecules in the coupled field was investigated, andthe applications of the asymmetric electric fieldenhanced membrane distillation for desalination, treatment of dye solutions and concentration of thermal-sensitive compounds were alsoevaluated. |
Funds: |
国家自然科学基金青年基金项目(21206122) |
AuthorIntro: |
苗成朋,男,硕士研究生,主要从事不对称静电场强化膜分离过程的研究 *通讯作者:durunhong@tjpu.edu.cn, |
Reference: |
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