Carbonation of Ammonium Diuranate Filtrate to Enhance Uranium Rejection by Nanofiltration
A commercial polymeric nanofiltration membrane (NF270, DuPont) was employed for uranium removal from ammonium diuranate filtrate (ADUF). Carbonate supplementation through ammonium carbonate addition enhanced uranium rejection via formation of uranyl–carbonate coordination complexes. Systematic speci...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/15/5/133 |
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| author | Runci Wang Zhongwei Yuan Xiang Meng Taihong Yan Weifang Zheng |
| author_facet | Runci Wang Zhongwei Yuan Xiang Meng Taihong Yan Weifang Zheng |
| author_sort | Runci Wang |
| collection | DOAJ |
| description | A commercial polymeric nanofiltration membrane (NF270, DuPont) was employed for uranium removal from ammonium diuranate filtrate (ADUF). Carbonate supplementation through ammonium carbonate addition enhanced uranium rejection via formation of uranyl–carbonate coordination complexes. Systematic speciation analysis of uranium species in ADUF was conducted, coupled with calculation of the concentration polarization modulus to optimize ammonium carbonate dosage. The experimental results demonstrated that with 680 mg/L ammonium carbonate addition, the permeate uranium concentration decreased from 1.2 mg/L to 0.64 mg/L. This study confirms the technical feasibility of ADUF carbonation pretreatment for improving uranium retention efficiency in nanofiltration processes, achieving 46.7% reduction in uranium permeation flux. |
| format | Article |
| id | doaj-art-53172e2d4dbb497fb4b44099eb09b9f7 |
| institution | OA Journals |
| issn | 2077-0375 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj-art-53172e2d4dbb497fb4b44099eb09b9f72025-08-20T02:33:47ZengMDPI AGMembranes2077-03752025-05-0115513310.3390/membranes15050133Carbonation of Ammonium Diuranate Filtrate to Enhance Uranium Rejection by NanofiltrationRunci Wang0Zhongwei Yuan1Xiang Meng2Taihong Yan3Weifang Zheng4Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, ChinaDepartment of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, ChinaDepartment of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, ChinaDepartment of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, ChinaDepartment of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, ChinaA commercial polymeric nanofiltration membrane (NF270, DuPont) was employed for uranium removal from ammonium diuranate filtrate (ADUF). Carbonate supplementation through ammonium carbonate addition enhanced uranium rejection via formation of uranyl–carbonate coordination complexes. Systematic speciation analysis of uranium species in ADUF was conducted, coupled with calculation of the concentration polarization modulus to optimize ammonium carbonate dosage. The experimental results demonstrated that with 680 mg/L ammonium carbonate addition, the permeate uranium concentration decreased from 1.2 mg/L to 0.64 mg/L. This study confirms the technical feasibility of ADUF carbonation pretreatment for improving uranium retention efficiency in nanofiltration processes, achieving 46.7% reduction in uranium permeation flux.https://www.mdpi.com/2077-0375/15/5/133uraniumnanofiltrationammonium diuranate filtrateconcentration polarizationmembrane separation |
| spellingShingle | Runci Wang Zhongwei Yuan Xiang Meng Taihong Yan Weifang Zheng Carbonation of Ammonium Diuranate Filtrate to Enhance Uranium Rejection by Nanofiltration Membranes uranium nanofiltration ammonium diuranate filtrate concentration polarization membrane separation |
| title | Carbonation of Ammonium Diuranate Filtrate to Enhance Uranium Rejection by Nanofiltration |
| title_full | Carbonation of Ammonium Diuranate Filtrate to Enhance Uranium Rejection by Nanofiltration |
| title_fullStr | Carbonation of Ammonium Diuranate Filtrate to Enhance Uranium Rejection by Nanofiltration |
| title_full_unstemmed | Carbonation of Ammonium Diuranate Filtrate to Enhance Uranium Rejection by Nanofiltration |
| title_short | Carbonation of Ammonium Diuranate Filtrate to Enhance Uranium Rejection by Nanofiltration |
| title_sort | carbonation of ammonium diuranate filtrate to enhance uranium rejection by nanofiltration |
| topic | uranium nanofiltration ammonium diuranate filtrate concentration polarization membrane separation |
| url | https://www.mdpi.com/2077-0375/15/5/133 |
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