Optimization in granulation conditions for adsorbent of extraction chromatography
Japan Atomic Energy Agency has been working on development of extraction chromatography technology for recovery of trivalent minor actinides (MA(III): Am, Cm) from high-level radioactive waste generated in reprocessing of spent fuel. The technology utilizes porous silica particles with about 50μm di...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2024-01-01
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| Series: | Mechanical Engineering Journal |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/mej/11/2/11_23-00407/_pdf/-char/en |
| _version_ | 1797206057496346624 |
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| author | Kenta HASEGAWA Ichiro GOTO Yasunori MIYAZAKI Hiromu AMBAI Sou WATANABE Masayuki WATANABE Yuichi SANO Masayuki TAKEUCHI |
| author_facet | Kenta HASEGAWA Ichiro GOTO Yasunori MIYAZAKI Hiromu AMBAI Sou WATANABE Masayuki WATANABE Yuichi SANO Masayuki TAKEUCHI |
| author_sort | Kenta HASEGAWA |
| collection | DOAJ |
| description | Japan Atomic Energy Agency has been working on development of extraction chromatography technology for recovery of trivalent minor actinides (MA(III): Am, Cm) from high-level radioactive waste generated in reprocessing of spent fuel. The technology utilizes porous silica particles with about 50μm diameter for support of adsorbents. The particles are coated by styrene-divinylbenzene copolymer, and an extractant for MA recovery is impregnated into the polymer. Pressure drop of the packed column depends on characteristics of the particle (diameter, uniformity and pore size). Large pressure drop of the column is not favorable for safety assessment of the technology although a certain level of the pressure drop is indispensable for excellent separation performance. In this study, we applied a granulation technique using a spray dryer that is widely used in industry, and conducted experiments to find the optimal specifications for silica support particles and conditions for the granulation operation. A basic characterization of the adsorbent prepared from the produced particles was carried out by an adsorption test of simulated high level liquid waste. As a result, it was first found that the uniformity of particle size could be improved by suppressing pulsation during supply of the feed slurry to the spray dryer. Next, by adjusting the viscosity of the feed slurry, it was possible to suppress the generation of particles with undesirable shapes such as hollow particles and depressed particles. It was also confirmed that these particles had a lower pressure drop than conventionally used particles. |
| first_indexed | 2024-04-24T09:00:58Z |
| format | Article |
| id | doaj.art-9422aad24e5f477bb54cae434e38b8bc |
| institution | Directory Open Access Journal |
| issn | 2187-9745 |
| language | English |
| last_indexed | 2024-04-24T09:00:58Z |
| publishDate | 2024-01-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Mechanical Engineering Journal |
| spelling | doaj.art-9422aad24e5f477bb54cae434e38b8bc2024-04-16T01:29:36ZengThe Japan Society of Mechanical EngineersMechanical Engineering Journal2187-97452024-01-0111223-0040723-0040710.1299/mej.23-00407mejOptimization in granulation conditions for adsorbent of extraction chromatographyKenta HASEGAWA0Ichiro GOTO1Yasunori MIYAZAKI2Hiromu AMBAI3Sou WATANABE4Masayuki WATANABE5Yuichi SANO6Masayuki TAKEUCHI7Japan Atomic Energy AgencyJapan Atomic Energy AgencyJapan Atomic Energy AgencyJapan Atomic Energy AgencyJapan Atomic Energy AgencyJapan Atomic Energy AgencyJapan Atomic Energy AgencyJapan Atomic Energy AgencyJapan Atomic Energy Agency has been working on development of extraction chromatography technology for recovery of trivalent minor actinides (MA(III): Am, Cm) from high-level radioactive waste generated in reprocessing of spent fuel. The technology utilizes porous silica particles with about 50μm diameter for support of adsorbents. The particles are coated by styrene-divinylbenzene copolymer, and an extractant for MA recovery is impregnated into the polymer. Pressure drop of the packed column depends on characteristics of the particle (diameter, uniformity and pore size). Large pressure drop of the column is not favorable for safety assessment of the technology although a certain level of the pressure drop is indispensable for excellent separation performance. In this study, we applied a granulation technique using a spray dryer that is widely used in industry, and conducted experiments to find the optimal specifications for silica support particles and conditions for the granulation operation. A basic characterization of the adsorbent prepared from the produced particles was carried out by an adsorption test of simulated high level liquid waste. As a result, it was first found that the uniformity of particle size could be improved by suppressing pulsation during supply of the feed slurry to the spray dryer. Next, by adjusting the viscosity of the feed slurry, it was possible to suppress the generation of particles with undesirable shapes such as hollow particles and depressed particles. It was also confirmed that these particles had a lower pressure drop than conventionally used particles.https://www.jstage.jst.go.jp/article/mej/11/2/11_23-00407/_pdf/-char/enminor actinidesextraction chromatographyspray dryerpressure dropsafety management |
| spellingShingle | Kenta HASEGAWA Ichiro GOTO Yasunori MIYAZAKI Hiromu AMBAI Sou WATANABE Masayuki WATANABE Yuichi SANO Masayuki TAKEUCHI Optimization in granulation conditions for adsorbent of extraction chromatography Mechanical Engineering Journal minor actinides extraction chromatography spray dryer pressure drop safety management |
| title | Optimization in granulation conditions for adsorbent of extraction chromatography |
| title_full | Optimization in granulation conditions for adsorbent of extraction chromatography |
| title_fullStr | Optimization in granulation conditions for adsorbent of extraction chromatography |
| title_full_unstemmed | Optimization in granulation conditions for adsorbent of extraction chromatography |
| title_short | Optimization in granulation conditions for adsorbent of extraction chromatography |
| title_sort | optimization in granulation conditions for adsorbent of extraction chromatography |
| topic | minor actinides extraction chromatography spray dryer pressure drop safety management |
| url | https://www.jstage.jst.go.jp/article/mej/11/2/11_23-00407/_pdf/-char/en |
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