Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers
This study aims to evaluate the impact of shell enclosures on the uranium uptake of amidoxime-based polymeric adsorbents contained within. Researchers have observed that the tensile strength of the adsorbent's polyethylene backbone is degraded after γ-irradiation to induce grafting of the amido...
| Asıl Yazarlar: | , , , , |
|---|---|
| Diğer Yazarlar: | |
| Materyal Türü: | Makale |
| Dil: | English |
| Baskı/Yayın Bilgisi: |
American Chemical Society (ACS)
2021
|
| Online Erişim: | https://hdl.handle.net/1721.1/129779 |
| _version_ | 1826213306937901056 |
|---|---|
| author | Haji, Maha N. Gonzalez, Jorge F. (Jorge Felix) Drysdale, Jessica A. Buesseler, Ken O. Slocum, Alexander H |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Haji, Maha N. Gonzalez, Jorge F. (Jorge Felix) Drysdale, Jessica A. Buesseler, Ken O. Slocum, Alexander H |
| author_sort | Haji, Maha N. |
| collection | MIT |
| description | This study aims to evaluate the impact of shell enclosures on the uranium uptake of amidoxime-based polymeric adsorbents contained within. Researchers have observed that the tensile strength of the adsorbent's polyethylene backbone is degraded after γ-irradiation to induce grafting of the amidoxime ligand. A two-part system was developed to decouple the mechanical and chemical requirements of the adsorbent by encapsulating them in a hard, permeable shell. The water flow in six shell designs and an unenclosed adsorbent for control in a recirculating flume was analyzed via a novel method developed using the measurement of radium extracted onto MnO2 impregnated acrylic fibers. Although the water flow was found to vary with enclosure design, orientation to the flow, and placement within the flume, little to no difference was observed in the uranium adsorption rate between all enclosures. The results of this study will be used to design a large-scale ocean deployment of a uranium harvesting system. |
| first_indexed | 2024-09-23T15:46:59Z |
| format | Article |
| id | mit-1721.1/129779 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:46:59Z |
| publishDate | 2021 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1297792022-09-29T16:07:33Z Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers Haji, Maha N. Gonzalez, Jorge F. (Jorge Felix) Drysdale, Jessica A. Buesseler, Ken O. Slocum, Alexander H Massachusetts Institute of Technology. Department of Mechanical Engineering This study aims to evaluate the impact of shell enclosures on the uranium uptake of amidoxime-based polymeric adsorbents contained within. Researchers have observed that the tensile strength of the adsorbent's polyethylene backbone is degraded after γ-irradiation to induce grafting of the amidoxime ligand. A two-part system was developed to decouple the mechanical and chemical requirements of the adsorbent by encapsulating them in a hard, permeable shell. The water flow in six shell designs and an unenclosed adsorbent for control in a recirculating flume was analyzed via a novel method developed using the measurement of radium extracted onto MnO2 impregnated acrylic fibers. Although the water flow was found to vary with enclosure design, orientation to the flow, and placement within the flume, little to no difference was observed in the uranium adsorption rate between all enclosures. The results of this study will be used to design a large-scale ocean deployment of a uranium harvesting system. U.S. Department of Energy (Contracts DE-NE0008268 and DE-NE000731) 2021-02-16T21:02:05Z 2021-02-16T21:02:05Z 2018-11 2018-09 2019-09-20T11:36:25Z Article http://purl.org/eprint/type/JournalArticle 0888-5885 1520-5045 https://hdl.handle.net/1721.1/129779 Haji, Maha N. et al. "Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers." Industrial & Engineering Chemical Research 57, 45 (November 2018): 15534–15541 © 2018 American Chemical Society en http://dx.doi.org/10.1021/acs.iecr.8b03583 Industrial & Engineering Chemical Research Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) Other repository |
| spellingShingle | Haji, Maha N. Gonzalez, Jorge F. (Jorge Felix) Drysdale, Jessica A. Buesseler, Ken O. Slocum, Alexander H Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers |
| title | Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers |
| title_full | Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers |
| title_fullStr | Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers |
| title_full_unstemmed | Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers |
| title_short | Effects of Protective Shell Enclosures on Uranium Adsorbing Polymers |
| title_sort | effects of protective shell enclosures on uranium adsorbing polymers |
| url | https://hdl.handle.net/1721.1/129779 |
| work_keys_str_mv | AT hajimahan effectsofprotectiveshellenclosuresonuraniumadsorbingpolymers AT gonzalezjorgefjorgefelix effectsofprotectiveshellenclosuresonuraniumadsorbingpolymers AT drysdalejessicaa effectsofprotectiveshellenclosuresonuraniumadsorbingpolymers AT buesselerkeno effectsofprotectiveshellenclosuresonuraniumadsorbingpolymers AT slocumalexanderh effectsofprotectiveshellenclosuresonuraniumadsorbingpolymers |