Reactions between reactive metals and iodine in aqueous solutions

New Composite Materials for Decreasing of Radioactive Molecular Iodine in the Water Coolant in Working and New Developed NPPs

“…Actually the contact time of the coolant with the ion exchangers does not exceed 5-15 min (Glanneskog et al, 2006). Therefore, low rate of sorption of molecular iodine from aqueous solutions on AV-18 anion exchanger does not allow its use for efficient removal of this form of radioiodine from primary coolant both in the course of the campaign and during the reactor outage.…”

“…It was interesting to elucidate the mechanism of localization of molecular iodine on composite materials. A study of the I 2 localization from aqueous solutions on massive Cu, Zn, and Al plates (Glanneskog et al, 2006) showed that localization of I 2 on Cu plates occurs via adsorption with the formation of CuI on the surface, whereas in the presence of Zn and Al plates the I 2 localization involves its conversion into ionic species. It was shown in (Glanneskog et al, 2006) that, the larger the ratio of the metal surface area to the solution volume, the higher the adsorption (or conversion) rate.…”

New Composite Materials for Decreasing of Radioactive Molecular Iodine in the Water Coolant on the Working and New Developed NPPS

“…It should be noted that data on sorption of molecular iodine, given in Table 2, were obtained under static conditions. Actually the contact time of the coolant with the ion exchangers does not exceed 5-15 min (Glanneskog et al, 2006). Therefore, low rate of sorption of molecular iodine from aqueous solutions on AV-18 anion exchanger does not allow its use for efficient removal of this form of radioiodine from primary coolant both in the course of the campaign and during the reactor outage.…”

Effect of aluminum metal surface on oxidation of iodide under gamma irradiation conditions

“…Some studies on I -or I 2 interactions with metals such as stainless steel, Cu, and Zn and Al metals were performed previously [12][13][14]. However, most studies on the interactions between I 2 and metals are limited to corrosion problems and do not focus on the volatility of iodine species.…”

“…However, most studies on the interactions between I 2 and metals are limited to corrosion problems and do not focus on the volatility of iodine species. While there have been a few previous studies on the volatility of iodine species in the presence of metals [13][14][15], very few papers were studied under gamma irradiation conditions [15].…”