Recommended coefficients for sorption of iodine, silver, and cesium on graphite dust particles

• Published in: Nuclear engineering and design Vol. 306; pp. 69 - 76
• Main Authors: Stempniewicz, Marek M., Goede, Pieter
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2016
• Subjects: Cesium; Correlation; Dust; Graphite; Iodine; Isotherms; Nuclear engineering; Sorption; USA, Tennessee, Oak Ridge
• ISSN: 0029-5493; 1872-759X
• DOI: 10.1016/j.nucengdes.2015.12.020

•Sorption of fission product vapors on dust particles—important safety aspect of HTRs.•Sorption coefficients represent well the AVR data for cesium, iodine, and silver on dust.•Sorption rates higher at low temperatures and lower at high temperatures.•A set of recommended sorption coefficient for computer code users. This paper describes the work performed to find the sorption coefficients that represent well the available experimental data for cesium, iodine, and silver on dust particles. The purpose of this work is to generate a set of coefficients that may be recommended for computer code users. The following data was correlated:•I-131 on AVR dust.•Ag-110m on AVR dust.•Cs-134 and Cs-137 on AVR dust. The results are summarized as follows:•The available data can be correlated. The data scatter is about 4 orders of magnitude. Therefore the coefficients of the Langmuir isotherms vary by 4 orders of magnitude.•Sorption rates are higher at low temperatures and lower at high temperatures. This tendency has been observed in the data compiled at Oak Ridge. It is therefore surmised that the highest value of the sorption coefficients are appropriate for the low temperatures and the lowest value of the sorption coefficients are appropriate for the high temperatures. The recommended sorption coefficients are presented in this paper.•The present set of coefficients is very rough and should be a subject for future verification against experimental data.