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Naik MUD. Adsorbents for the Uranium Capture from Seawater for a Clean Energy Source and Environmental Safety: A Review. ACS OMEGA 2024; 9:12380-12402. [PMID: 38524451 PMCID: PMC10956418 DOI: 10.1021/acsomega.3c07961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/27/2024] [Accepted: 02/01/2024] [Indexed: 03/26/2024]
Abstract
On the global level, uranium is considered the main nuclear energy source, and its removal from terrestrial ores is enough to last until the end of the current century. Therefore, a major focus is attracted toward the capture of uranium from a sustainable source (seawater). Uranium recovery from seawater has been reported over the last few decades, and recently many efforts have been devoted to the preparation of such adsorbents with higher selectivity and adsorption capacity. The purpose of this review is to report the advancement in adsorbent preparation and modification of porous materials. It also discusses challenges such as adsorbent selectivity, low uranium concentration in seawater, contact time, biofouling, and the solution to the problems necessary to ensure a better adsorption performance of the adsorbent.
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Affiliation(s)
- Mehraj-ud-din Naik
- Department of Chemical Engineering,
College of Engineering, Jazan University, Jazan 45142, Kingdom of Saudi Arabia
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Huang X, Wang Y, Wang Y, Yang L. A Facile One-Pot Preparation and Properties of Nanocellulose-Reinforced Ionic Conductive Hydrogels. Molecules 2023; 28:molecules28031301. [PMID: 36770969 PMCID: PMC9919830 DOI: 10.3390/molecules28031301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/20/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
Nanocellulose-reinforced ionic conductive hydrogels were prepared using cellulose nanofiber (CNF) and polyvinyl alcohol (PVA) as raw materials, and the hydrogels were prepared in a dimethyl sulfoxide (DMSO)/water binary solvent by a one-pot method. The prepared hydrogels were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The mechanical properties, electrical conductivity, and sensing properties of the hydrogels were studied by means of a universal material testing machine and LCR digital bridge. The results show that the ionic conductive hydrogel exhibits high stretchability (elongation at break, 206%) and firmness (up to 335 KPa). The tensile fracture test shows that the hydrogel has good properties in terms of tensile strength, toughness, and elasticity. The hydrogel as a conductor medium is assembled into a self-powered strain sensor and the open-circuit voltage can reach 0.830 V. It shows good sensitivity in the bend sensing testing, indicating that the hydrogel has good sensing performance. The water retention and anti-freezing performance experiments show that the addition of dimethyl sulfoxide solvents can effectively improve the anti-freezing and water retention properties of hydrogels.
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Affiliation(s)
- Xinmin Huang
- College of Textile & Clothing, Yancheng Institute of Technology, Yancheng 224051, China
- Correspondence:
| | - Yaning Wang
- College of Textile & Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Yifei Wang
- College of Textile & Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Lianhe Yang
- School of Textile & Science Engineering, Tiangong University, Tianjin 300387, China
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Fouda SR, El-Sayed IE, Attia NF, Abdeen MM, Abdel Aleem AAH, Nassar IF, Mira HI, Gawad EA, Kalam A, Al-Ghamdi AA, Galhoum AA. Mechanistic study of Hg(II) interaction with three different α-aminophosphonate adsorbents: Insights from batch experiments and theoretical calculations. CHEMOSPHERE 2022; 304:135253. [PMID: 35697101 DOI: 10.1016/j.chemosphere.2022.135253] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/31/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Herein, efficient and potential chelating α-aminophosphonate based sorbents (AP-) derived from three different amine origins (aniline/anthranilic acid/O-phenylenediamine) to form AP-H, carboxylated and aminated enhanced aminophosphonate as AP-H, AP-COOH, and AP-NH2 were synthesized via a facile method. The structure of the synthesized sorbents was elucidated using different techniques; elemental analysis (CHNP/O), FT-IR, NMR (1H-, 13C and 31P NMR), TGA and BET. The fabricated sorbents were exploited for Hg(II) removal from aqueous solution via sorption properties. Isotherm fitted by Langmuir equation: the maximum sorption capacities at optimum pH 5.5, and T:25 ± 1 °C, were found to be 1.33, 1.23, and 1.15 mmol Hg g-1 for AP-COOH, AP-NH2, AP-H, respectively, which is roughly correlated with the active sites density and the hard/soft characteristics of adsorbents' reactive groups. Metal-ligand binding affinities are qualitatively rationalized in terms of hard and soft acids and bases (HSAB) theory. The interaction of Hg(II) (soft) has a stronger affinity to AP-COOH can be considered a softer base compared with reference material (AP-H) over than AP-NH2 (hard). This sequence result showed opposite trends consistent with their reciprocal properties according to the steric effect modulates and the specific surface area. Thermodynamics analysis for absolute values of ΔH°, ΔS° and ΔG° afford the selectivity towards Hg(II) sorption with the following order: AP-COOH > AP-NH2 >AP-H. Elution and regeneration was carried out by HCl solution and recycled for a minimum of five cycles, the sorption and desorption efficiencies are greater than 91%. Such sorbents exhibit good durability, stability and promising potential for Hg(II) removal. Finally, a new modelling technique for quantitative non-linear description and comparison of equivalent geographical positions in 3D space of extended relationships. Exothermic and spontaneous behavior were observed using a proposed Floatotherm that included the Van't Hoff parameters model.
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Affiliation(s)
- Safaa R Fouda
- Chemical Engineering Department, Higher Institute of Engineering and Technology, El-Bagor City, Menofia, Egypt
| | - Ibrahim E El-Sayed
- Chemistry Department, Faculty of Science, Menoufia University, Shebin El-Kom, Egypt.
| | - Nour F Attia
- Gas Analysis and Fire Safety Laboratory, Chemistry Division, National Institute of Standards, 136, Giza, 12211, Egypt.
| | - Marwa M Abdeen
- Chemical Engineering Department, Higher Institute of Engineering and Technology, El-Bagor City, Menofia, Egypt
| | | | - Ibrahim F Nassar
- Faculty of Specific Education, Ain Shams University, Abassia, Cairo, Egypt
| | - Hamed I Mira
- Nuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo, Egypt
| | - Ebrahim A Gawad
- Nuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo, Egypt
| | - Abul Kalam
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia; Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Ahmed A Al-Ghamdi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ahmed A Galhoum
- Nuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo, Egypt.
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Zhang D, Zhao B, Liu L, Tang H, Wang X, Yu S. Insights into enhanced elimination of U(VI) and Eu(III) by amidoxime-functionalized Ti3C2T MXenes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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