The effect of restriction membranes on mass transfer in an electrodialysis with filtration membrane process
Huining Deng, George Q Chen, Sally L Gras, Sandra E Kentish
JOURNAL OF MEMBRANE SCIENCE | ELSEVIER SCIENCE BV | Published : 2017
In an electrodialysis with filtration membrane (EDFM) separation process, a pair of restriction membranes is used to prevent leakage of molecules into the electrode solution. Driven by the electrical potential gradient, ions transport across these membranes in different directions, resulting in concentration changes in the feed and permeate compartments respectively. However, the effects of these restriction membranes have not been systemically studied to date. In the present work, the performance of a non-charged polyacrylamide (PAm) membrane and two ion-exchange membranes were compared. PAm restriction membranes were found to give the most stable operation, with only slight concentration a..View full abstract
Related Projects (1)
The authors thank Memphasys for their kind donation of both membranes and the EDFM cell. Dr. Ruining Deng acknowledges funding from the China Scholarship Council.