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Tang Z, Xie D, Li S. Synergistic enhancement of iodine capture from humid streams by microporosity and hydrophobicity of activated carbon fiber. J Hazard Mater 2024; 471:134369. [PMID: 38678709 DOI: 10.1016/j.jhazmat.2024.134369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 04/03/2024] [Accepted: 04/18/2024] [Indexed: 05/01/2024]
Abstract
Activated carbon fibers (ACF) are widely used to remove gaseous radioiodine produced during spent fuel reprocessing owing to their excellent adsorption properties. However, ACF's strong affinity for moisture tends to dominate, significantly reducing its ability to capture iodine in humid environments. The study used a one-step facile modification method of spray-deposited poly(divinylbenzene) (PDVB) nanoparticles on ACF to prepare hydrophobic activated carbon fiber (ACF-PDVB1.5). Compared to the initial ACF, the ACF-PDVB1.5 enhances the specific surface area to 1571 m2/g while maintaining abundant active sites, overcoming the disadvantage of pore reduction caused by traditional modification methods. More importantly, they also have excellent acid and alkali resistance and hydrophobicity (water contact angle 131.1°), with a preference for I2 pores (97 % microporosity). The iodine capture capacity of ACF PDVB 1.5 showed a significant increase compared to the initial ACF, as indicated by both static and dynamic adsorption tests. Notably, the dynamic iodine adsorption capacity of ACF-PDVB1.5 in a mixed iodine-water vapor stream at actual temperature (75 °C) and humid (50 % RH) conditions was 1847.69 mg/g, an increase of 55.47 % over the capacity of initial ACF (1188.71 mg/g). This work improves the overall I2 adsorption performance through hydrophobicity and pore size coordination.
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Affiliation(s)
- Zengming Tang
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; National and Local Joint Engineering Research Center of Airborne Pollutants Treatment and Radioactive Protection in Building Environment, Hengyang 421001, PR China
| | - Dong Xie
- National and Local Joint Engineering Research Center of Airborne Pollutants Treatment and Radioactive Protection in Building Environment, Hengyang 421001, PR China; School of Civil Engineering, University of South China, Hengyang 421001, PR China.
| | - Suzhe Li
- School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, PR China; National and Local Joint Engineering Research Center of Airborne Pollutants Treatment and Radioactive Protection in Building Environment, Hengyang 421001, PR China
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Jung YE, Yang JH, Yim MS. Investigation of bismuth-based metal-organic frameworks for effective capture and immobilization of radioiodine gas. J Hazard Mater 2024; 467:133777. [PMID: 38359759 DOI: 10.1016/j.jhazmat.2024.133777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/09/2024] [Accepted: 02/10/2024] [Indexed: 02/17/2024]
Abstract
In this study, we investigated the use of Bi-mna, a specific type of bismuth metal organic framework (MOF) for the capture and disposal of iodine, a key nuclide of concern in nuclear fuel reprocessing plants and nuclear power plants. To find the suitable form of Bi-mna for the purpose, experiments were performed by synthesizing four different Bi-mna with varying reagent ratios and connecting iodine adsorption and conversion for immobilization. After iodine adsorption and characterization to investigate their adsorption mechanisms, the Bi-mna samples went through conversion for immobilization to fix captured iodine into the adsorbents. The converted materials are characterized to examine their thermal stability. The Bi-2mna, showing the best performance of adsorption and thermal stability after the conversion, was selected to explore its chemical stability. According to the test results, the converted compound showed relatively low leaching rate (3.06 ×10-5 g/m2∙day) compared with other iodine containing waste forms for disposal. Based on the results, we proposed the Bi-2mna as a candidate material as iodine adsorbent as well as waste form precursor. ENVIRONMENTAL IMPLICATION: Radioiodine a key nuclide of concern in nuclear fuel reprocessing plants and nuclear power plants. Once ingested, it is accumulated in thyroid grand, causing negative health effects. Currently, a typical radioiodine adsorbent is silver-based zeolites. Despite a strong affinity to iodine of silver, it has a chemical toxicity that causes a potential issue in disposal. Therefore, it is substantially required to develop new type of adsorbents which are both good for capture and disposal of radioiodine. In this respect, we suggested a bismuth-based metal-organic framework as an alternative adsorbent to manage the life cycle of radioiodine.
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Affiliation(s)
- Young Eun Jung
- Advanced Fuel Cycle Technology Division, Korea Atomic Energy Research Institute, 111 Daedeok-daero, 989 beon-gil, Yuseong-gu, Daejeon 34057, South Korea
| | - Jae Hwan Yang
- Department of Environmental & IT Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, South Korea.
| | - Man-Sung Yim
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, South Korea.
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AlNeyadi SS, Alhassani MT, Aleissaee AS, J S, Khalaf AH, Alteneij AA, Alyaarbi YY. Synthesizing covalent organic frameworks for unprecedented iodine capture performance. Heliyon 2024; 10:e25921. [PMID: 38420374 PMCID: PMC10900415 DOI: 10.1016/j.heliyon.2024.e25921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 03/02/2024] Open
Abstract
Nuclear energy continues to be an important supplier of electricity, but it has problems with waste management and the possibility to leak radioactive material. Iodine, a potentially harmful byproduct of uranium fission, is hazardous to both the environment and human health. Therefore, developing safe, effective, and affordable storage facilities for iodine waste is crucial. Owing to their well-controlled pore structure and substantial certain surface area, covalent organic frameworks (COFs) show promise for the adsorption of radioactive iodine. The newly developed COFs (SJ-COF, YA-COF, and AA-COF) shown amazing properties, including strong thermal and chemical stability, which made them ideal for efficient iodine capture. Notably, the ultrahigh iodine capture capacities of these COFs-8.52 g g-1, 8.12 g g-1 and 7.01 g g-1-were significantly greater than most previously reported materials. And The % removal efficiency for SJ-COF, YA-COF and AA-COF from I2/cyclohexane solutions were 87.9 %, 88.6% and 82.6 % respectively. It is noteworthy that the three COFs have high selectivity, reusability, and iodine retention abilities, maintaining iodine even after five recyclings. Based on the outcomes of the experiments, the adsorption processes of the three COFs were examined, and it was discovered that iodine was bound through physical-chemical adsorption. The findings of our work provide a ground-breaking standard for the removal of nuclear waste and demonstrate the enormous potential of COFs as adaptable porous structures that may be specifically designed to address major environmental concerns.
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Affiliation(s)
- Shaikha S. AlNeyadi
- Department of Chemistry College of Science, UAE University Al-Ain, 15551, United Arab Emirates
| | - Mohammed T. Alhassani
- Department of Chemical Engineering, College of Engineering, Al Ain, 15551, United Arab Emirates
| | - Ali S. Aleissaee
- Department of Chemistry College of Science, UAE University Al-Ain, 15551, United Arab Emirates
| | - Sultan. J
- Department of Chemistry College of Science, UAE University Al-Ain, 15551, United Arab Emirates
| | - Abdullah H. Khalaf
- Department of Chemistry College of Science, UAE University Al-Ain, 15551, United Arab Emirates
| | - Abdulrahman A. Alteneij
- Department of Chemistry College of Science, UAE University Al-Ain, 15551, United Arab Emirates
| | - Yaser Y. Alyaarbi
- Department of Chemistry College of Science, UAE University Al-Ain, 15551, United Arab Emirates
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Baskaran K, Elliott C, Ali M, Moon J, Beland J, Cohrs D, Chong S, Riley BJ, Chidambaram D, Carlson K. Effects of NO 2 aging on bismuth nanoparticles and bismuth-loaded silica xerogels for iodine capture. J Hazard Mater 2023; 446:130644. [PMID: 36587601 DOI: 10.1016/j.jhazmat.2022.130644] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/13/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
The capture of long-lived radioactive iodine (129I) from oxidizing off-gasses produced from reprocessing used nuclear fuel is paramount to human health and environmental safety. Bismuth has been investigated as a viable iodine getter but the phase stability of bismuth-based sorbents in an oxidizing environment have not yet been researched. In the current work, bismuth nanoparticle-based sorbents, as free particles (Bi-NPs) and embedded within silica xerogel monoliths made with a porogen (TEO-5), were exposed to I2(g) before and after aging in 1 v/v% NO2 at 150 °C. For unaged sorbents, BiI3 was the dominant phase after iodine capture with 8-30 mass% BiOI present due to native Bi2O3 on the surface of the unaged nanoparticles. After 3 h of aging, 82 mass% of the Bi-NPs was converted to Bi2O3 with only a small amount of iodine captured as BiOI (18 mass%). After aging TEO-5 for 3 h, iodine was captured as both BiI3 (26 %) and BiOI (74 %) and no Bi2O3 was detected.". Additionally, bismuth lining the micrometer-scale pores in the TEO-5 led to enhanced iodine capture. In a subsequent exposure of the sorbents to NO2 (secondary aging), all BiI3 converted to BiOI. Thus, direct capture of iodine as BiOI is desired (over BiI3) to minimize loss of iodine after capture.
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Affiliation(s)
- Karthikeyan Baskaran
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, NV 89557, USA
| | - Casey Elliott
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, NV 89557, USA
| | - Muhammad Ali
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, NV 89557, USA
| | - Jeremy Moon
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, NV 89557, USA
| | - Jade Beland
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, NV 89557, USA
| | - Dave Cohrs
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, NV 89557, USA
| | - Saehwa Chong
- Pacific Northwest National Laboratory (PNNL), Richland, WA 99532, USA
| | - Brian J Riley
- Pacific Northwest National Laboratory (PNNL), Richland, WA 99532, USA
| | - Dev Chidambaram
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, NV 89557, USA; Nevada Institute for Sustainability, University of Nevada, Reno, Reno, NV 89557-0388, USA
| | - Krista Carlson
- Department of Chemical and Materials Engineering, University of Nevada, Reno, Reno, NV 89557, USA.
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Sun J, Zhang R, Yao G, Zhang Q, Gao F. Easy Fabrication of Amorphous Covalent Organic Nanospheres Using Schiff-Base Chemistry for Iodine Capture. Chem Asian J 2021; 17:e202101214. [PMID: 34889050 DOI: 10.1002/asia.202101214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/24/2021] [Indexed: 11/07/2022]
Abstract
Designing a strategy for easy fabrication of amorphous porous organic polymers (POPs) with regularly nanospherical structure using common chemical raw materials is highly imperative to promote the practical application for iodine capture. Uniform covalent organic nanospheres (CONs), defined as CON-TT, were easily prepared at room temperature via a Schiff base condensation reaction of tri(4-aminophenyl) methane (TAPM) and terephthalaldehyde (TPA) catalyzed by acetic acid. The obtained CON-TT exhibits a uniform nanospherical shape, high specific surface area, effective imine sorption sites and abundant benzene rings. An excellent reversible iodine adsorption capacity of 4.80 g g-1 is achieved, which can be attributed to the hybrid of physisorption and chemisorption process. We anticipate that this work can provide general guidance for the industrial large-scale preparation of other CONs for iodine capture.
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Affiliation(s)
- Junyong Sun
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University, 241002, Wuhu, P. R. China
| | - Rongchao Zhang
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University, 241002, Wuhu, P. R. China
| | - Genxiu Yao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University, 241002, Wuhu, P. R. China
| | - Qiang Zhang
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University, 241002, Wuhu, P. R. China
| | - Feng Gao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University, 241002, Wuhu, P. R. China
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Zhu H, Wang B, Zhu W, Duan T, He G, Wei Y, Sun D, Zhou J. Interface assembly of specific recognition gripper wrapping on activated collagen fiber for synergistic capture effect of iodine. Colloids Surf B Biointerfaces 2021; 210:112216. [PMID: 34838421 DOI: 10.1016/j.colsurfb.2021.112216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/16/2021] [Accepted: 11/10/2021] [Indexed: 10/19/2022]
Abstract
Efficient capture of radioactive iodine (129I, 131I) is of great significance in spent fuel treatment. In this paper, a new adsorbent named Catechin@ACF was successfully prepared through interface assembly of specific recognition gripper with plant polyphenols (catechin) on activated collagen fiber (ACF), and the catechin membrane with specific grip on iodine was successfully constructed on the surface of ACF. The results showed that the adsorbent assembled catechin membrane was rich in aromatic rings, hydroxyl groups and imine adsorption sites, and possessed specific recognition and capture characteristics of iodine. Moreover, the as-prepared Catechin@ACF showed excellent capture capacity for iodine vapor and iodine in organic solution with the maximum capture capacity of 2122.68 mg/g and 258.29 mg/g, respectively. In iodine-cyclohexane solution, the adsorption process was in according with the Pseudo first order kinetic and Langmuir isothermal model. In addition, the specific recognition and capture mechanism analysis indicated that the aromatic rings, phenolic hydroxyl groups and imine groups in the catechin membrane were the specific and effective grippers for iodine, and finally iodine formed a stable conjugated system with the adsorbent in the form of I- and I3-. Therefore, the as-prepared specific iodine capturer Catechin@ACF was expected to play a vital role in the capture of radioactive iodine in spent fuel off-gas because of its specific recognition, high capture capacity, large-scale preparation, and environment-friendly.
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Affiliation(s)
- Hui Zhu
- State Key Laboratory of Environment-friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China
| | - Bo Wang
- State Key Laboratory of Environment-friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China
| | - Wenkun Zhu
- Engineering Research Center of Biomass Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China
| | - Tao Duan
- Engineering Research Center of Biomass Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China.
| | - Guiqiang He
- State Key Laboratory of Environment-friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China
| | - Yanxia Wei
- State Key Laboratory of Environment-friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China
| | - Dequn Sun
- State Key Laboratory of Environment-friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China.
| | - Jian Zhou
- State Key Laboratory of Environment-friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China; Engineering Research Center of Biomass Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China.
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Yadollahi M, Hamadi H, Nobakht V. Capture of iodine in solution and vapor phases by newly synthesized and characterized encapsulated Cu 2O nanoparticles into the TMU-17-NH 2 MOF. J Hazard Mater 2020; 399:122872. [PMID: 32521316 DOI: 10.1016/j.jhazmat.2020.122872] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 05/06/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
The efficient capture and storage of radioactive iodine (129I or 131I) formed during the extensive use of nuclear energy is of paramount importance. Therefore, it is a great deal to design new adsorbents for effectively disposing of iodine from nuclear waste. In this work, a new Cu2O/TMU-17-NH2 composite has been prepared by a simple encapsulation of Cu2O nanoparticles (NPs) into the metal organic framework (MOF) TMU-17-NH2 for the first time. The as-synthesized Cu2O/TMU-17-NH2 was fully characterized in details and the iodine sorption/release capability of the Cu2O/TMU-17-NH2 composite has been investigated both in solution and in the vapor phase. According to the FE-SEM images, the Cu2O/TMU-17-NH2 was obtained with same morphology to that of the pristine TMU-17-NH2. The I2 sorption/release experiments were examined by UV-vis spectroscopy. The optimal iodine sorption was obtained by almost complete removal of iodine with a sorption capacity of about 567 mg/g. Detailed experimental evidence demonstrating that the iodine was captured by chemisorption process. Furthermore, photoluminescence (PL) properties of Cu2O/TMU-17-NH2 have also been investigated in which indicate that the Cu2O/TMU-17-NH2 composite exhibits stronger emission than the pristine TMU-17-NH2.
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Affiliation(s)
- Mahtab Yadollahi
- Department of Chemistry, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Hosein Hamadi
- Department of Chemistry, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Valiollah Nobakht
- Department of Chemistry, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Qian X, Wang B, Zhu ZQ, Sun HX, Ren F, Mu P, Ma C, Liang WD, Li A. Novel N-rich porous organic polymers with extremely high uptake for capture and reversible storage of volatile iodine. J Hazard Mater 2017; 338:224-232. [PMID: 28570876 DOI: 10.1016/j.jhazmat.2017.05.041] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/20/2017] [Accepted: 05/22/2017] [Indexed: 06/07/2023]
Abstract
The imino group-contained porous organic polytriphenylamine, which originated from diphenylamine and 1,3,5-tris(4-bromophenyl)benzene, was designedly synthesized though Buchwald-Hartwig coupling reaction. The basic properties including morphologies, structure and thermal stability of the resulting POPs were investigated by scanning electron microscope(SEM), thermo gravimeter analysis (TGA), 13C CP/MAS solid state NMR and Fourier transform infrared spectroscope (FTIR). The pore size distribution of POPs present uniform mesoporous of sizes less than 50nm. Scanning electron microscope images show that the resulting POPs formed as an aggregation composed of nanospheres. The POPs were employed as a physicochemical stable porous medium for removal of radioactive iodine and an iodine uptake of up to 382wt% was obtained. To our knowledge, this is one of the highest adsorption value reported to date. Based on these findings, the resulting POPs shows great potential in the removal of radioactive iodine at different states, through a green, environmentally friendly, and sustainable way.
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Affiliation(s)
- Xin Qian
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Bing Wang
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Zhao-Qi Zhu
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Han-Xue Sun
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Feng Ren
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Peng Mu
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Chonghua Ma
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Wei-Dong Liang
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - An Li
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China.
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