{"title":"用相分离法从模拟高放射性废弃玻璃中回收Se、Zr、Pd和Cs","authors":"Hiroyuki Inoue, Yasuhiro Watanabe, Jaeyeop Chung, Kazuro Kizaki, Atsunobu Masuno","doi":"10.1111/ijag.16600","DOIUrl":null,"url":null,"abstract":"<p>In this study, elemental recovery was performed using phase separation from simulated high-level radioactive waste (HLW) glass. To cause phase separation, SiO<sub>2</sub> and B<sub>2</sub>O<sub>3</sub> were added to the simulated HLW glass and adjusted the ratio of SiO<sub>2</sub>: B<sub>2</sub>O<sub>3</sub>: other oxides to 40:50:10. The phase separated glass was immersed in aqueous solutions of 0–3 mol/L of HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, and a 1:1 mixture of HCl–HNO<sub>3</sub> at 363 K for 20 h, and the dissolution behavior of 17 elements was examined. The relationship between the dissolved mass fraction of each element and the acid concentration in the immersion liquid could be approximated by the modified sigmoid function. The recovery of stable nuclei Se, Zr, Pd, and Cs instead of long-lived radioactive nuclei was tested using a four-stage leaching process in which the sample was immersed sequentially in four aqueous solutions at 363 K of distilled water, HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, and a 1:1 mixture of HCl–HNO<sub>3</sub> for 20 h. It was confirmed that Se, Zr, Pd, and Cs could be recovered selectively. Furthermore, the recovery result could be predicted based on the individual dissolution results described above.</p>","PeriodicalId":13850,"journal":{"name":"International Journal of Applied Glass Science","volume":"13 4","pages":"501-513"},"PeriodicalIF":2.1000,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Recovery of Se, Zr, Pd, and Cs from simulated high-level radioactive waste glass through phase separation\",\"authors\":\"Hiroyuki Inoue, Yasuhiro Watanabe, Jaeyeop Chung, Kazuro Kizaki, Atsunobu Masuno\",\"doi\":\"10.1111/ijag.16600\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In this study, elemental recovery was performed using phase separation from simulated high-level radioactive waste (HLW) glass. To cause phase separation, SiO<sub>2</sub> and B<sub>2</sub>O<sub>3</sub> were added to the simulated HLW glass and adjusted the ratio of SiO<sub>2</sub>: B<sub>2</sub>O<sub>3</sub>: other oxides to 40:50:10. The phase separated glass was immersed in aqueous solutions of 0–3 mol/L of HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, and a 1:1 mixture of HCl–HNO<sub>3</sub> at 363 K for 20 h, and the dissolution behavior of 17 elements was examined. The relationship between the dissolved mass fraction of each element and the acid concentration in the immersion liquid could be approximated by the modified sigmoid function. The recovery of stable nuclei Se, Zr, Pd, and Cs instead of long-lived radioactive nuclei was tested using a four-stage leaching process in which the sample was immersed sequentially in four aqueous solutions at 363 K of distilled water, HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, and a 1:1 mixture of HCl–HNO<sub>3</sub> for 20 h. It was confirmed that Se, Zr, Pd, and Cs could be recovered selectively. Furthermore, the recovery result could be predicted based on the individual dissolution results described above.</p>\",\"PeriodicalId\":13850,\"journal\":{\"name\":\"International Journal of Applied Glass Science\",\"volume\":\"13 4\",\"pages\":\"501-513\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2022-07-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Applied Glass Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/ijag.16600\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Applied Glass Science","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ijag.16600","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Recovery of Se, Zr, Pd, and Cs from simulated high-level radioactive waste glass through phase separation
In this study, elemental recovery was performed using phase separation from simulated high-level radioactive waste (HLW) glass. To cause phase separation, SiO2 and B2O3 were added to the simulated HLW glass and adjusted the ratio of SiO2: B2O3: other oxides to 40:50:10. The phase separated glass was immersed in aqueous solutions of 0–3 mol/L of HNO3, H2SO4, and a 1:1 mixture of HCl–HNO3 at 363 K for 20 h, and the dissolution behavior of 17 elements was examined. The relationship between the dissolved mass fraction of each element and the acid concentration in the immersion liquid could be approximated by the modified sigmoid function. The recovery of stable nuclei Se, Zr, Pd, and Cs instead of long-lived radioactive nuclei was tested using a four-stage leaching process in which the sample was immersed sequentially in four aqueous solutions at 363 K of distilled water, HNO3, H2SO4, and a 1:1 mixture of HCl–HNO3 for 20 h. It was confirmed that Se, Zr, Pd, and Cs could be recovered selectively. Furthermore, the recovery result could be predicted based on the individual dissolution results described above.
期刊介绍:
The International Journal of Applied Glass Science (IJAGS) endeavors to be an indispensable source of information dealing with the application of glass science and engineering across the entire materials spectrum. Through the solicitation, editing, and publishing of cutting-edge peer-reviewed papers, IJAGS will be a highly respected and enduring chronicle of major advances in applied glass science throughout this century. It will be of critical value to the work of scientists, engineers, educators, students, and organizations involved in the research, manufacture and utilization of the material glass. Guided by an International Advisory Board, IJAGS will focus on topical issue themes that broadly encompass the advanced description, application, modeling, manufacture, and experimental investigation of glass.