Decontamination of spent ion exchange resins contaminated with iron-oxide deposits using mineral acid solutions
The efficiency of decontamination of model spent ion exchange resins, contaminated with magnetite and hematite, with mineral acid solutions, and using electro-decontamination, was evaluated. It has been shown that effective hematite dissolution occurs in concentrated mineral acid solutions. However,...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-09-01
|
| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573321001649 |
| _version_ | 1818738961754882048 |
|---|---|
| author | E.A. Tokar A.I. Matskevich M.S. Palamarchuk Yu.A. Parotkina A.M. Egorin |
| author_facet | E.A. Tokar A.I. Matskevich M.S. Palamarchuk Yu.A. Parotkina A.M. Egorin |
| author_sort | E.A. Tokar |
| collection | DOAJ |
| description | The efficiency of decontamination of model spent ion exchange resins, contaminated with magnetite and hematite, with mineral acid solutions, and using electro-decontamination, was evaluated. It has been shown that effective hematite dissolution occurs in concentrated mineral acid solutions. However, the use of direct current increases the decontamination efficiency of spent ion exchange resins contaminated with hematite. It is determined that with increasing voltage and acid concentration, the dissolution efficiency of hematite deposits increases and can exceed 99%. It has been shown that hematite dissolution is accompanied by secondary adsorption of radionuclides due to ion exchange, which can be removed with sodium nitrate solutions. |
| first_indexed | 2024-12-18T01:17:16Z |
| format | Article |
| id | doaj.art-32e01b27c44542e09cae77f9deb744e7 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-18T01:17:16Z |
| publishDate | 2021-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-32e01b27c44542e09cae77f9deb744e72022-12-21T21:25:55ZengElsevierNuclear Engineering and Technology1738-57332021-09-0153929182925Decontamination of spent ion exchange resins contaminated with iron-oxide deposits using mineral acid solutionsE.A. Tokar0A.I. Matskevich1M.S. Palamarchuk2Yu.A. Parotkina3A.M. Egorin4Institute of Chemistry FEBRAS, 159 Pr-t 100-letiya Vladivostoka, Vladivostok, 690022, RussiaInstitute of Chemistry FEBRAS, 159 Pr-t 100-letiya Vladivostoka, Vladivostok, 690022, RussiaInstitute of Chemistry FEBRAS, 159 Pr-t 100-letiya Vladivostoka, Vladivostok, 690022, RussiaInstitute of Chemistry FEBRAS, 159 Pr-t 100-letiya Vladivostoka, Vladivostok, 690022, RussiaCorresponding author.; Institute of Chemistry FEBRAS, 159 Pr-t 100-letiya Vladivostoka, Vladivostok, 690022, RussiaThe efficiency of decontamination of model spent ion exchange resins, contaminated with magnetite and hematite, with mineral acid solutions, and using electro-decontamination, was evaluated. It has been shown that effective hematite dissolution occurs in concentrated mineral acid solutions. However, the use of direct current increases the decontamination efficiency of spent ion exchange resins contaminated with hematite. It is determined that with increasing voltage and acid concentration, the dissolution efficiency of hematite deposits increases and can exceed 99%. It has been shown that hematite dissolution is accompanied by secondary adsorption of radionuclides due to ion exchange, which can be removed with sodium nitrate solutions.http://www.sciencedirect.com/science/article/pii/S1738573321001649Ion exchange resinsRadioactive wasteRadionuclidesDecontamination |
| spellingShingle | E.A. Tokar A.I. Matskevich M.S. Palamarchuk Yu.A. Parotkina A.M. Egorin Decontamination of spent ion exchange resins contaminated with iron-oxide deposits using mineral acid solutions Nuclear Engineering and Technology Ion exchange resins Radioactive waste Radionuclides Decontamination |
| title | Decontamination of spent ion exchange resins contaminated with iron-oxide deposits using mineral acid solutions |
| title_full | Decontamination of spent ion exchange resins contaminated with iron-oxide deposits using mineral acid solutions |
| title_fullStr | Decontamination of spent ion exchange resins contaminated with iron-oxide deposits using mineral acid solutions |
| title_full_unstemmed | Decontamination of spent ion exchange resins contaminated with iron-oxide deposits using mineral acid solutions |
| title_short | Decontamination of spent ion exchange resins contaminated with iron-oxide deposits using mineral acid solutions |
| title_sort | decontamination of spent ion exchange resins contaminated with iron oxide deposits using mineral acid solutions |
| topic | Ion exchange resins Radioactive waste Radionuclides Decontamination |
| url | http://www.sciencedirect.com/science/article/pii/S1738573321001649 |
| work_keys_str_mv | AT eatokar decontaminationofspentionexchangeresinscontaminatedwithironoxidedepositsusingmineralacidsolutions AT aimatskevich decontaminationofspentionexchangeresinscontaminatedwithironoxidedepositsusingmineralacidsolutions AT mspalamarchuk decontaminationofspentionexchangeresinscontaminatedwithironoxidedepositsusingmineralacidsolutions AT yuaparotkina decontaminationofspentionexchangeresinscontaminatedwithironoxidedepositsusingmineralacidsolutions AT amegorin decontaminationofspentionexchangeresinscontaminatedwithironoxidedepositsusingmineralacidsolutions |