Abstract
The electro-electrodialysis (EED) experiment was carried out to concentrate HI from HIx (HI–H 2O–I 2 mixture) solution, which may be achieved by thermochemical water splitting IS (iodine–sulfur) process. The molar ratios of the HIx solution were HI:H 2O:I 2 = 1:6.0:0.5 (I 2-0.5 solution), 1:5.8:1 (I 2-1 solution) and 1:6.4:2 (I 2-2 solution). EED cell are composed of the collector, electrode and electrolyte. The carbon plate, Nafion 117, which was cation exchange membrane and the activated carbon cloth used as an collector, electrolyte and electrode, respectively. In the catholyte, the HI mole fractions increased and I 2 mole fractions decreased by EED operation. The cell voltage reached to 0.24 V, 0.29 V and 0.40 V for I 2-0.5 solution, I 2-1 solution and I 2-2 solution after 10 h EED operation, respectively. The electro-osmosis coefficient decreased from 1.49 mol/Faraday to 0.93 mol/Faraday and proton transport number increased from 0.74 to 0.84 with an increase of iodine molar ratio. It has been observed that the rate of enhancement in HI concentration is also affected by membrane properties.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
