1. bookVolume 60 (2015): Issue 3 (September 2015)
Journal Details
License
Format
Journal
eISSN
1508-5791
First Published
25 Mar 2014
Publication timeframe
4 times per year
Languages
English
access type Open Access

Fabrication and performance of fl y ash granule filter for trapping gaseous cesium

Published Online: 25 Sep 2015
Volume & Issue: Volume 60 (2015) - Issue 3 (September 2015)
Page range: 565 - 570
Received: 24 Sep 2014
Accepted: 20 May 2015
Journal Details
License
Format
Journal
eISSN
1508-5791
First Published
25 Mar 2014
Publication timeframe
4 times per year
Languages
English
Abstract

Although a disk-type fly ash filter has shown a good performance in trapping gaseous cesium, it has difficulty in charging filters into a filter container and discharging waste filters containing radioactive cesium from a container by remote action. To solve the difficulty of the disk-type fly ash filter, five types of granule filters, including a ball type, tube type, and sponge-structure type have been made. Among them, the best filter type was chosen through simple crucible tests. The five types of granule filters packed into containers were loaded into five alumina crucibles of 50 cc. Five grams of CsNO3 was used as a gaseous cesium source. They were then placed in a muffle furnace and heated to 900°C and maintained for 2 hours. After the experiment, the weights of the cesium trapped filters were measured. Among the five types of granule filters, the sponge-structure type granule filter was the best, which has the highest trapping capacity of cesium. Its capacity is 0.42 g-Cs/g-filter. The chosen sponge-structure type granule filters and disk-type filters have been tested using a two-zone tube furnace. Cs volatilization and Cs trapping zones were maintained at 900 and 1000°C, respectively. Sixteen grams of CsNO3 was used as a gaseous cesium source. The cesium trapping profile of the sponge-structure type granule filters was almost similar to that of the disk-type fly ash filters. For both cases, cesium was successfully trapped within the third filter.

Keywords

1. Park, J. J., Shin, J. M., Park, G. I., Lee, J. W., & Song, K. C. (2009). An advanced voloxidation process at KAERI. In Global 2009, 6-11 September (Paper 9196). Paris, France.Search in Google Scholar

2. Lee, H., Park, G. I., Kang, K. H., Hur, J. M., Kim, J. G., Ahn, D. H., Cho, Y. Z., & Kim, E. H. (2011). Pyro-processing technology development at KAERI. Nucl. Eng. Technol., 43, 317-328.10.5516/NET.2011.43.4.317Search in Google Scholar

3. Park, J. J., Park, C. J., Chun, J. I., Lee, J. W., Shin, J. M., Park, G. I., & Song, K. C. (2008). Evaluation of the effects of the advanced voloxidation process on pyro-processing. I. Radiation and decay heat analysis of the advanced voloxidation process. Daejeon: KAERI. (KAERI/TR-3622/2008).Search in Google Scholar

4. Jeon, M. K., Shin, J. M., Park, J. J., & Park, G. I. (2012). Simulation of Cs behavior during the high temperature voloxidation process using the HSC chemistry code. J. Nucl. Mater., 430, 37-43.10.1016/j.jnucmat.2012.06.040Search in Google Scholar

5. Shin, J. M., & Park, J. J. (2001). Trapping characteristics of cesium in off-gas stream using fl y ash filter. Korean J. Chem. Eng., 18, 1010-1014.10.1007/BF02705634Search in Google Scholar

6. Shin, J. M., Kim, K. Y., Park, J. J., & Shin, S. W. (2005). Trapping characteristics for various cesium compounds by fl y ash fi lter. J. Korean Soc. Waste Manage., 22(1), 27-39.Search in Google Scholar

7. Shin, J. M., Park, J. J., Song, K. C., & Kim, J. H. (2009). Trapping behavior of gaseous cesium by fl y ash filters. Appl. Radiat. Isot., 67, 1534-1539.10.1016/j.apradiso.2009.02.07019375925Search in Google Scholar

8. Okuyama, K., & Kousaka, Y. (1991). Particle density. In K. Iinoya, K. Gotoh & K. Higashitani (Eds.), Powder technology handbook (pp. 35-40). New York: Marcel Dekker, Inc.Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo