The evaporation of I2 was observed to follow primarily first order kinetics, depending on the I2 concentration. The evaporation rate constant increased rapidly with increase in temperature. The presence of Ie slightly reduced the evaporation rate of I2 by forming relatively stable I 3 . The effect of Cle at | Effects of temperature and solution composition on evaporation of iodine as a part of estimating volatility of iodine under gamma irradiation Nuclear Engineering and Technology 49 (2017) 1689e1695 Contents lists available at ScienceDirect Nuclear Engineering and Technology journal homepage: Original Article Effects of temperature and solution composition on evaporation of iodine as a part of estimating volatility of iodine under gamma irradiation Jei-Won Yeon*, Sang-Hyuk Jung Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok daero, Yuseong-gu, Daejeon, 34057, Republic of Korea a r t i c l e i n f o a b s t r a c t Article history: As a part of evaluating the volatility of iodide ions subjected to gamma irradiation, I2 evaporation ex- Received 13 November 2016 periments were performed with I2 and Ie mixed solutions in the temperature range 26e80 C in an open, Received in revised form well-ventilated space. The evaporation of I2 was observed to follow primarily first order kinetics, 26 June 2017 depending on the I2 concentration. The evaporation rate constant increased rapidly with increase in Accepted 21 July 2017 Available online 12 August 2017 temperature. The presence of Ie slightly reduced the evaporation rate of I2 by forming relatively stable I 3. The effect of Cle at 1690 . Yeon, . Jung / Nuclear Engineering and Technology 49 (2017) 1689e1695 controlled in the range 26e80 C by a water bath. The airflow rate measured by the air velocity meter (TSI Velocicalc 8346, TSI Inc., Shoreview (MN), USA) at six points of evaporation vessels was in the range ± m/s. This flow rate was the maximum airflow of the fume hood, and was not determined from consideration of any reactor building condition. All I2 evaporation experiments were carried out in the same fume hood. The schematic diagram of the evaporation .
