%0 Journal Article
%T Experimental Study for HIx Concentration by Electro-Electrodialysis (EED) Cells in the Water Splitting Sulfur-Iodine Thermochemical Cycle
%A Alberto Giaconia
%A Alfonso Pozio
%A Giampaolo Caputo
%A Irena Balog
%A Salvatore Sau
%J ChemEngineering | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/chemengineering3020050
%X The efficiency of HI concentration/separation from a HI x solution, (mixture of HI/H 2O/I 2) represents a crucial factor in the sulfur-iodine thermochemical water splitting process for hydrogen production. In this paper, an experimental study on HI cathodic concentration in HI x solution using stacked electro-electrodialysis (EED) cells was carried out under the conditions of 1 atm and at three different temperature (25, 55 and 85 ¡ãC) and using a current density of 0.10 A/cm 2. Results showed that an increase in HI concentration can be obtained under certain conditions. The apparent transport number (t +) in all the experiments was very close to 1, and the electro-osmosis coefficient (¦Â) changed in a range of 1.08¨C1.16. The tests showed a detectable, though slow, increase in both the anodic iodine and cathodic hydriodic acid concentrations. View Full-Tex
%U https://www.mdpi.com/2305-7084/3/2/50