کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1275005 | 1497672 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Evaluation on the electro-electrodialysis to concentrate HI from HIx solution by using two types of the electrode Evaluation on the electro-electrodialysis to concentrate HI from HIx solution by using two types of the electrode](/preview/png/1275005.png)
The electro-electrodialysis (EED) experiments for thermochemical water-splitting IS (iodine–sulfur) process was carried out to concentrate HI from HIx (HI–H2O–I2 mixture) solution. The molar ratios of the HIx solution were HI:H2O:I2=1:6:2(I2-2solution) and 1:6:3 (I2-3 solution). EED cell is composed of the collector, electrode and electrolyte. The graphite plate, Nafion 117 which was cation exchange membrane and the activated carbon cloth used as an collector, electrolyte and electrode, respectively. Two types of electrode which had the different surface area (type B electrode: 1400, type C electrode: 700m2/g) were selected to compare the ratio of the HI concentration. The electrical energy demand only for electrode reaction through the EED operation using type B electrode was 300 J/h lower than that using the type C electrode in I2-2 solution. In all EED experimental conditions, HI concentration increased with increasing operation time that meant the concentrated HI from HIx solution. Moreover, it could be confirmed that the quasi-azeotropic composition have been overcome during the EED operation.
Journal: International Journal of Hydrogen Energy - Volume 32, Issue 12, August 2007, Pages 2005–2009