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Hamza MF, Mira H, Khalafalla MS, Wang J, Wei Y, Yin X, Ning S, Althumayri K, Fouda A. Photocatalytic Performance of Functionalized Biopolymer for Neodymium (III) Sorption and the Recovery from Leachate Solution. Catalysts 2023. [DOI: 10.3390/catal13040672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Abstract
Successive grafting of new sorbent bearing amino phosphonic groups based on chitosan nano magnetite particles was performed through successive coupling with formaldehyde. The produced composite was characterized by the high sorption capacity toward rare earth elements (REEs) and consists of different types of functional groups (phosphonic, hydroxyls and amine groups) that are used for enhancing the sorption properties. The chemical modification and the sorption mechanism were investigated through different analytical tools; i.e., FTIR, SEM, SEM-EDX, TGA, BET (surface area) and pHpzc. The sorption was investigated toward Nd(III) as one of the REE(III) members under ultraviolet (UV) and visible light (VL) conditions. The optimum sorption was found at pH0 4 and the sorption capacity was recorded at 0.871 and 0.779 mmol Nd g−1 under UV and VL respectively. Sorption isotherms and uptake kinetics were fitted by Langmuir and Sips and by pseudo-first order rate equation (PFORE) for the functionalized sorbent, respectively. The sorbent showed a relatively high-speed sorption kinetic (20 min). The bounded metal ions were progressively eluted using 0.2 M HCl solution with a desorption rate 10–15 min, while the loss in the total capacity after a series of sorption recycling (sorption/desorption) (five cycles) was limited (around 3%) with 100% of the desorption efficiency, indicating the high stability of the sorbent toward an acidic medium. The sorbent was used for the recovery of REEs from leach liquor residue after pretreatment for the extraction of particular elements. From these results (high loading capacity, high selectivity and high stability against acid treatments), we can see that the sorbent is a promising tool for the selective recovery of rare earth elements in the field of metal valorization.
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Abdelkader H, Farouk Z, Mohamed M, Abdelghani M, Houdheifa L, Imene K, Ines H, Anis B, Nadjib C, Meriem H, Souad R, Lasnouni T, Omar LB. Efficient one-pot synthesis, characterization and  DFT study of solvents polarity effects on the structural, energetic and thermodynamic proprieties of (a-methylamino-ethyl)-phosphonic acid dimethyl ester. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bian L, Nie J, Jiang X, Song M, Dong F, Shang L, Deng H, He H, Belzile N, Chen Y, Xu B, Liu X. Selective adsorption of uranyl and potentially toxic metal ions at the core-shell MFe 2O 4-TiO 2 (M=Mn, Fe, Zn, Co, or Ni) nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2019; 365:835-845. [PMID: 30481734 DOI: 10.1016/j.jhazmat.2018.11.076] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 10/24/2018] [Accepted: 11/17/2018] [Indexed: 06/09/2023]
Abstract
Potentially toxic metal ions (Xn+: Rb+, Sr2+, Cr3+, Mn2+, Ni2+, Zn2+, Cd2+) usually coexist with uranyl (UO2+), which will have a great influence on the selective adsorption process. Here, the core-shell MFe2O4-TiO2 (M = Mn, Fe, Zn, Co, or Ni) nanoparticles were synthesized and assessed as new selective adsorbents. The results reveal that TiO2(101) preferentially grows along the MFe2O4(311)/(111) orientation. The M2+ ions as the mediators transfer the holes from MFe2O4 to TiO2, at the conduction bands. On the TiO2(101) surfaces and TiO2(101)-TiO2(101) gaps, the paired active electrons mainly complex with water molecules as hydroxyl radicals to capture Xn+ ions, forming an ion layer to block UO22+ from being adsorbed. Simultaneously, it should be noted that an interesting adsorption pathway was UO22+ being horizontally and irreversibly adsorbed in the MFe2O4(311)/(111)-TiO2(101) interface, and therein, the stable adsorption capacity was found to be 66.78 mg g-1 in the MnFe2O4(311)/(111)-TiO2(101) interface. Finally, a mechanism of hybrid orbitals between MnFe2O4-TiO2 and UO2+-Xn+ was proposed.
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Affiliation(s)
- Liang Bian
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China; Institute of Gem and Material Technology, Hebei GEO University, Shijiazhuang, 050000, Hebei, China.
| | - Jianan Nie
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Xiaoqiang Jiang
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Mianxin Song
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China.
| | - Faqin Dong
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Liping Shang
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Hu Deng
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Huichao He
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Nelson Belzile
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Yuwei Chen
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Bing Xu
- Sichuan Civil-military Integration Institute, Mianyang, 621010, Sichuan, China
| | - Xiaonan Liu
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, South West University of Science and Technology, Mianyang, 621010, Sichuan, China
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