Can reverse electrodialysis extract energy from salinity gradients?

Reverse electrodialysis (RED) is a promising technology for extracting energy from salinity gradients. However, there are still barriers to the realization of its commercial application. Developing flexible methods of RED application is a feasible scheme. In this paper, we review and summarize unique RED applications in recent years.

What is reverse electrodialysis?

This book covers the theory and implementation of reverse electrodialysis, which uses ion exchange membranes to selectively deliver cations or anions, and its advantages over other methods, such as high reliability without any moving parts, the direct energy conversion process from chemical energy to electrical energy, and its low fouling rate.

What are the applications of reverse electrodialysis (RED)?

Applications on energy conversion, desalination technology and water treatment. Improvements of electrodes, feed solutions, membranes and membrane cell operation. The possible development direction of RED is forecasted. Reverse electrodialysis (RED) is a promising technology for extracting energy from salinity gradients.

What is the potential development direction of reverse electrodialysis (RED)?

Improvements of electrodes, feed solutions, membranes and membrane cell operation. The possible development direction of RED is forecasted. Reverse electrodialysis (RED) is a promising technology for extracting energy from salinity gradients. However, there are still barriers to the realization of its commercial application.

Does reversible fouling reduce red performance in reverse electrodialysis?

Enhanced mixing in the diffusive boundary layer for energy generation in reverse electrodialysis. J. Membr. Sci. 453, 312–319. doi:10.1016/j.memsci.2013.11.005 Vital, B., Sleutels, T., Gagliano, M. C., and Hamelers, H. V. M. (2023). Reversible fouling by particulate matter from natural seawater reduces RED performance while limiting biofouling.

Can a nanoporous membrane be used for reverse electrodialysis?

When applied to reverse electrodialysis, the nanoporous carbon membrane offers a high short-circuit current with an output power density of 67 W m −2, which is about two orders of magnitude beyond that of the classic ion-exchange membranes and current prototype nanoporous membranes reported in the literature.