Mass transport in reverse electrodialysis for sustainable energy generation

Piotr Edward Dlugolecki

Research output: ThesisPhD Thesis - Research UT, graduation UT

501 Downloads (Pure)

Abstract

Reverse electrodialysis (RED) is a promising and potentially attractive technology for the generation of sustainable energy from the mixing of salt and fresh water. It uses the free energy of mixing two solutions of different salinity (e.g. river and sea water) to generate power. In RED, a concentrated salt solution and a less concentrated salt solution are brought into contact through an alternating series of anion exchange membranes (AEM) and cation exchange membranes (CEM). Anion exchange membranes contain fixed positive charges which allow anions to permeate through the AEM towards the anode and cation exchange membranes contain fixed negative charges which allow cations to be transported through the CEM towards the cathode. At the electrodes a redox couple is used to mitigate the transfer of electrons. The ion exchange membranes are one of the key elements in the RED process as they, together with ion transport phenomena and concentration polarization effects occurring at the membrane-solution interface determine to a large extent the net power output of the system. This PhD thesis investigates the design, optimization and practical potential of the reverse electrodialysis process, with a special focus on membrane and spacer properties, mass transfer of the ionic species and concentration polarization phenomena. The results of this work show the high potential of RED as renewable energy source and it also brings RED closer to practical implementation.
Original languageEnglish
Awarding Institution
  • University of Twente
Supervisors/Advisors
  • Wessling, M., Supervisor
  • Nijmeijer, D.C., Co-Supervisor
Award date18 Nov 2009
Place of PublicationEnschede
Publisher
Print ISBNs978-90-365-2928-0
DOIs
Publication statusPublished - 18 Nov 2009

Keywords

  • IR-69120

Fingerprint

Dive into the research topics of 'Mass transport in reverse electrodialysis for sustainable energy generation'. Together they form a unique fingerprint.

Cite this