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Elsayed NH, Alamrani NA, Alatawi RAS, Al-Anazi M, Alenazi DAK, Alhawiti AS, Almutairi AM, Al-Anazi W, Monier M. Ion-imprinted aminoguanidine-chitosan for selective recognition of lanthanum (III) from wastewater. Int J Biol Macromol 2024; 270:132193. [PMID: 38723816 DOI: 10.1016/j.ijbiomac.2024.132193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024]
Abstract
Developing a sorbent for the removal of La3+ ions from wastewater offers significant environmental and economic advantages. This study employed an ion-imprinting process to integrate La3+ ions into a newly developed derivative of aminoguanidine-chitosan (AGCS), synthesized via an innovative method. The process initiated with the modification of chitosan by attaching cyanoacetyl groups through amide bonds, yielding cyanoacetyl chitosan (CAC). This derivative underwent further modification with aminoguanidine to produce the chelating AGCS biopolymer. The binding of La3+ ions to AGCS occurred through imprinting and cross-linking with epichlorohydrin (ECH), followed by the extraction of La3+, resulting in the La3+ ion-imprinted sorbent (La-AGCS). Structural confirmation of these chitosan derivatives was established through elemental analysis, FTIR, and NMR. SEM analysis revealed that La-AGCS exhibited a more porous structure compared to the smoother non-imprinted polymer (NIP). La-AGCS demonstrated superior La3+ capture capability, with a maximum capacity of 286 ± 1 mg/g. The adsorption process, fitting the Langmuir and pseudo-second-order models, indicated a primary chemisorption mechanism. Moreover, La-AGCS displayed excellent selectivity for La3+, exhibiting selectivity coefficients ranging from 4 to 13 against other metals. This study underscores a strategic approach in designing advanced materials tailored for La3+ removal, capitalizing on specific chelator properties and ion-imprinting technology.
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Affiliation(s)
- Nadia H Elsayed
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia; Center for Renewable Energy and Environmental Technologies, University of Tabuk, Tabuk Saudi Arabia.
| | - Nasser A Alamrani
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Raedah A S Alatawi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Menier Al-Anazi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Duna A K Alenazi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Aliyah S Alhawiti
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Abeer M Almutairi
- Physics Department, Faculty of Science, University of Tabuk, 71421, Saudi Arabia
| | - Wejdan Al-Anazi
- Department of Computer of Science, Faculty of computers and information technology, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - M Monier
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
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Ding D, Kuang J, Yuan W, Huang Z, Lin B, Yang Y. Ion-imprinted chitosan prepared without cross-linking agent for efficient selective adsorption of Al(III) from rare earth solution. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:1232-1243. [PMID: 38318767 DOI: 10.1039/d3ay01350b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
In the aqueous phase, ion-imprinted materials exhibit excellent selective adsorption properties for specific ions, but their complicated preparation process and large amount of crosslinker consumption limit their application. In this study, ion-imprinted chitosan (IIP-CS) was prepared by a simple one-step hydrothermal method without a cross-linking agent for the efficient adsorption of trace amounts of Al(III) from a rare earth solution. The structures and morphology of IIP-CS were analyzed by FT-IR, SEM, and XRD. The Al(III) adsorption characteristics of IIP-CS were investigated under various preparation processes and adsorption conditions. It was found that the optimum mass ratio of IIP-CS is 3 : 1 and pH is 3 and the adsorption capacity reaches up to 40.36 mg g-1. In addition, three different isothermal models-Temkin, Freundlich, and Langmuir-were used to analyze the equilibrium adsorption of IIP-CS in aqueous solution. The results obtained are consistent with the Langmuir model. The adsorption process of Al(III) on IIP-CS follows a pseudo-secondary kinetic model, suggesting that electron sharing or exchange between IIP-CS and Al(III) is a key factor affecting its adsorption rate. IIP-CS shows high selectivity coefficients for Al(III) in mixtures of La(III), Y(III), and Gd(III), which are 792.50, 163.26, and 55.16, respectively. The mechanism of action is the formation of a complex via amidation between Al(III) and IIP-CS. IIP-CS is an adsorbent with excellent regeneration and selective adsorption performance in aqueous solution.
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Affiliation(s)
- Dan Ding
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Kejia Road 156, Ganzhou 341000, Jiangxi, China.
| | - Jingzhong Kuang
- Jiangxi Provincial Key Laboratory of Low-Carbon Processing and Utilization of Strategic Metal Mineral Resources, China
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Kejia Road 156, Ganzhou 341000, Jiangxi, China.
| | - Weiquan Yuan
- School of Resources and Architectural Engineering, GanNan University of Science and Technology, Ganzhou 341000, China
| | - Zheyu Huang
- School of Resources and Architectural Engineering, GanNan University of Science and Technology, Ganzhou 341000, China
| | - Bo Lin
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Kejia Road 156, Ganzhou 341000, Jiangxi, China.
| | - Yiqiang Yang
- School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Kejia Road 156, Ganzhou 341000, Jiangxi, China.
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Yuan W, Kuang J, Hu H, Ding D, Yu M. Preparation of chitosan mesoporous membrane/halloysite composite for efficiently selective adsorption of Al(III) from rare earth ions solution through constructing pore structure on substrate. Int J Biol Macromol 2024; 256:128351. [PMID: 37995782 DOI: 10.1016/j.ijbiomac.2023.128351] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/25/2023] [Accepted: 11/20/2023] [Indexed: 11/25/2023]
Abstract
The removal of impurity Al(III) from rare earth ion solution by selective adsorption method was one of the challenging tasks. Herein, calcination and acid dissolution treatment were used to construct the pore structure for the halloysite substrate (Hal-650-H) and provide conditions for the formation of the chitosan mesoporous membrane to prepare composite (Hal-H-2CS). The selective adsorption properties and mechanism of the Hal-H-2CS for Al(III) in the rare earth ion solution were studied. The results showed that the formation of mesoporous structures for chitosan provided abundant sites for the adsorption of Al(III). Hal-H-2CS showed remarkable selective adsorption properties for Al(III) in a wide pH range and the binary mixtures with high content of Al(III) or La(III). The maximum adsorption capacity of Al(III) was 106 mg/g, while the adsorption capacity of La(III) was only 1.41 mg/g at pH 4.0. In addition, the Hal-H-2CS exhibited excellent regeneration and structural stability. The remarkable selective properties of Hal-H-2CS was achieved by the synergistic effect between chitosan mesoporous membrane and Hal-650-H, the main adsorption sites were the OH, NH2, CONH2 of chitosan and the oxygen sites of the Hal-650-H. This work provides a new strategy for the design and preparation of outstanding selective adsorbent for Al(III).
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Affiliation(s)
- Weiquan Yuan
- School of Resources and Architectural Engineering, GanNan University of Science and Technology, Ganzhou 341000, China; Key Laboratory of Mine Geological Disaster Prevention and Control and Ecological Restoration, Ganzhou 341000, China
| | - Jingzhong Kuang
- Jiangxi Key Laboratory of Mining Engineering, Ganzhou 341000, China; School of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China.
| | - Haixiang Hu
- School of Resources and Architectural Engineering, GanNan University of Science and Technology, Ganzhou 341000, China; Key Laboratory of Mine Geological Disaster Prevention and Control and Ecological Restoration, Ganzhou 341000, China
| | - Dan Ding
- School of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Mingming Yu
- Jiangxi Key Laboratory of Mining Engineering, Ganzhou 341000, China; School of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
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Facile synthesis and characterization of ZnS polymorphs/Halloysite composite for efficiently selective adsorption of Al(III) from acidic rare earth ions solution. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Li W, Guo J, Du H, Wang D, Cao J, Wang Z. Selective removal of aluminum ions from rare earth solutions by using ion-imprinted polymers. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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6
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Wilfong WC, Ji T, Duan Y, Shi F, Wang Q, Gray ML. Critical review of functionalized silica sorbent strategies for selective extraction of rare earth elements from acid mine drainage. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127625. [PMID: 34857400 DOI: 10.1016/j.jhazmat.2021.127625] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/14/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
The ubiquitous and growing global reliance on rare earth elements (REEs) for modern technology and the need for reliable domestic sources underscore the rising trend in REE-related research. Adsorption-based methods for REE recovery from liquid waste sources are well-positioned to compete with those of solvent extraction, both because of their expected lower negative environmental impact and simpler process operations. Functionalized silica represents a rising category of low cost and stable sorbents for heavy metal and REE recovery. These materials have collectively achieved high capacity and/or high selective removal of REEs from ideal solutions and synthetic or real coal wastewater and other leachate sources. These sorbents are competitive with conventional materials, such as ion exchange resins, activated carbon; and novel polymeric materials like ion-imprinted particles and metal organic frameworks (MOFs). This critical review first presents a data mining analysis for rare earth element recovery publications indexed in Web of science, highlighting changes in REE recovery research foci and confirming the sharply growing interest in functionalized silica sorbents. A detailed examination of sorbent formulation and operation strategies to selectively separate heavy (HREE), middle (MREE), and light (LREE) REEs from the aqueous sources is presented. Selectivity values for sorbents were largely calculated from available figure data and gauged the success of the associated strategies, primarily: (1) silane-grafted ligands, (2) impregnated ligands, and (3) bottom-up ligand/silica hybrids. These were often accompanied by successful co-strategies, especially bite angle control, site saturation, and selective REE elution. Recognizing the need to remove competing fouling metals to achieve purified REE "baskets," we highlight techniques for eliminating these species from acid mine drainage (AMD) and suggest a novel adsorption-based process for purified REE extraction that could be adapted to different water systems.
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Affiliation(s)
- Walter C Wilfong
- National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA; NETL Support Contractor, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA.
| | - Tuo Ji
- National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA; NETL Support Contractor, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA
| | - Yuhua Duan
- National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA
| | - Fan Shi
- National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA; NETL Support Contractor, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA
| | - Qiuming Wang
- National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA; NETL Support Contractor, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA
| | - McMahan L Gray
- National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940, USA
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Abu Elgoud EM, Ismail ZH, Ahmad MI, El-Nadi YA, Abdelwahab SM, Aly HF. Sorption of Lanthanum(III) and Neodymium(III) from Concentrated Phosphoric Acid by Strongly Acidic Cation Exchange Resin (SQS-6). RUSS J APPL CHEM+ 2020. [DOI: 10.1134/s1070427219110156] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Godiya CB, Liang M, Sayed SM, Li D, Lu X. Novel alginate/polyethyleneimine hydrogel adsorbent for cascaded removal and utilization of Cu 2+ and Pb 2+ ions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 232:829-841. [PMID: 30530273 DOI: 10.1016/j.jenvman.2018.11.131] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 11/25/2018] [Accepted: 11/26/2018] [Indexed: 06/09/2023]
Abstract
Heavy metal ion pollution leads to severe health risk to human beings. Herein, a natural and highly efficient sodium alginate (ALG)/polyethyleneimine (PEI) composite hydrogel was designed and fabricated for the removal of heavy metal ions from wastewater. The adsorption of heavy metal ions on the ALG based, 3D composite hydrogel were thoroughly investigated in this study. Furthermore, the in situ reduced metal nanoparticle-loaded ALG/PEI composite hydrogel provided us a sustainable utilization route of the heavy metal ion with a promising adsorption-catalysis ability. In general, this research will present an effective and practical paradigm for the cascaded treatment and recycling of heavy metal ions in wastewater.
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Affiliation(s)
- Chirag B Godiya
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu Province, China
| | - Ma Liang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu Province, China
| | - Sayed Mir Sayed
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu Province, China
| | - Dawei Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
| | - Xiaolin Lu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu Province, China.
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9
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Alakhras F. Kinetic Studies on the Removal of Some Lanthanide Ions from Aqueous Solutions Using Amidoxime-Hydroxamic Acid Polymer. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:4058503. [PMID: 30116648 PMCID: PMC6079563 DOI: 10.1155/2018/4058503] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/28/2018] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
Lanthanide metal ions make distinctive and essential contributions to recent global proficiency. Extraction and reuse of these ions is of immense significance especially when the supply is restricted. In light of sorption technology, poly(amidoxime-hydroxamic) acid sorbents are synthesized and utilized for the removal of various lanthanide ions (La3+, Nd3+, Sm3+, Gd3+, and Tb3+) from aqueous solutions. The sorption speed of trivalent lanthanides (Ln3+) depending on the contact period is studied by a batch equilibrium method. The results reveal fast rates of metal ion uptake with highest percentage being achieved after 15-30 min. The interaction of poly(amidoxime-hydroxamic) acid sorbent with Ln3+ ions follows the pseudo-second-order kinetic model with a correlation coefficient R2 extremely high and close to unity. Intraparticle diffusion data provide three linear plots indicating that the sorption process is affected by two or more steps, and the intraparticle diffusion rate constants are raised among reduction of ionic radius of the studied lanthanides.
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Affiliation(s)
- Fadi Alakhras
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
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10
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High selectivity and removal efficiency of lotus root-based activated carbon towards Fe(III) in La(III) solution. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-017-0322-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Negrea A, Gabor A, Davidescu CM, Ciopec M, Negrea P, Duteanu N, Barbulescu A. Rare Earth Elements Removal from Water Using Natural Polymers. Sci Rep 2018; 8:316. [PMID: 29321487 PMCID: PMC5762904 DOI: 10.1038/s41598-017-18623-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 12/15/2017] [Indexed: 11/30/2022] Open
Abstract
Adsorption of rare earth metals, Eu (III) and Nd (III) was investigated on a new environmental friendly material, thiourea functionalized cellulose. Before usage, the synthesized material was characterized by Fourrier Transform Infrared spectroscopy and energy dispersive X-ray analysis. The influence of adsorption parameters (adsorbent dosage, time, temperature and initial metal concentration) on adsorption capacity was investigated. Experimental data were fitted by using the pseudo-first-order and pseudo-second-order kinetic models. Simultaneously thermodynamic and equilibrium studies have been carried out using Langmuir, Freundlich and Sips isotherm. Maximum adsorption capacities were reached in 30 minutes at 298 K having the value of 27 mg/g for Eu (III) and 73 mg/g for Nd (III).
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Affiliation(s)
- Adina Negrea
- Politehnica University Timişoara, Faculty of Industrial Chemistry and Environmental Engineering, Victoriei Square Nr. 2, 300006, Timişoara, Romania
| | - Andreea Gabor
- Politehnica University Timişoara, Faculty of Industrial Chemistry and Environmental Engineering, Victoriei Square Nr. 2, 300006, Timişoara, Romania
| | - Corneliu Mircea Davidescu
- Politehnica University Timişoara, Faculty of Industrial Chemistry and Environmental Engineering, Victoriei Square Nr. 2, 300006, Timişoara, Romania.
| | - Mihaela Ciopec
- Politehnica University Timişoara, Faculty of Industrial Chemistry and Environmental Engineering, Victoriei Square Nr. 2, 300006, Timişoara, Romania
| | - Petru Negrea
- Politehnica University Timişoara, Faculty of Industrial Chemistry and Environmental Engineering, Victoriei Square Nr. 2, 300006, Timişoara, Romania
| | - Narcis Duteanu
- Politehnica University Timişoara, Faculty of Industrial Chemistry and Environmental Engineering, Victoriei Square Nr. 2, 300006, Timişoara, Romania.
| | - Alina Barbulescu
- Ovidius University of Costanta, Romania,124, Mamaia Blvd., 900527, Constanta, Romania
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12
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Microwave assisted modification of cellulose by gallic acid and its application for removal of aluminium from real samples. Int J Biol Macromol 2017; 101:490-501. [DOI: 10.1016/j.ijbiomac.2017.03.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/17/2017] [Accepted: 03/06/2017] [Indexed: 11/20/2022]
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13
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Mesoporous polymer-coated PAN beads for environmental applications: fabrication, characterisation and uranium adsorption studies. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-4962-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Preparation of Fe(III) ion surface-imprinted material for removing Fe(III) impurity from lanthanide ion solutions. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.12.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Li Z, Yu Y, Li Z, Wu T. A review of biosensing techniques for detection of trace carcinogen contamination in food products. Anal Bioanal Chem 2015; 407:2711-26. [PMID: 25694149 DOI: 10.1007/s00216-015-8530-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 01/24/2015] [Accepted: 01/30/2015] [Indexed: 01/04/2023]
Abstract
Carcinogen contaminations in the food chain, for example heavy metal ions, pesticides, acrylamide, and mycotoxins, have caused serious health problems. A major objective of food-safety research is the identification and prevention of exposure to these carcinogens, because of their impossible-to-reverse tumorigenic effects. However, carcinogen detection is difficult because of their trace-level presence in food. Thus, reliable and accurate separation and determination methods are essential to protect food safety and human health. This paper summarizes the state of the art in separation and determination methods for analyzing carcinogen contamination, especially the advances in biosensing methods. Furthermore, the application of promising technology including nanomaterials, imprinted polymers, and microdevices is detailed. Challenges and perspectives are also discussed.
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Affiliation(s)
- Zhanming Li
- Department of Biosystems Engineering, Zhejiang University, Hangzhou, 310058, China
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16
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Removal of Al, Fe and Si from complex rare-earth leach solution: A three-liquid-phase partitioning approach. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.02.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Liu Y, Tian S, Meng X, Dai X, Liu Z, Meng M, Han J, Wang Y, Chen R, Yan Y, Ni L. Synthesis, characterization, and adsorption properties of a Ce(III)-imprinted polymer supported by mesoporous SBA-15 matrix by a surface molecular imprinting technique. CAN J CHEM 2014. [DOI: 10.1139/cjc-2013-0423] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new Ce(III) ion imprinted polymer (Ce(III)-IIP), which can be used for selective removal of Ce(III) from aqueous solutions, was successfully prepared based on the matrix material of ordered mesoporous silica SBA-15 by surface molecular imprinting technology. The prepared polymer was characterized by X-ray diffraction, transmission electron microscopy, Fourier transmission infrared spectrometry, and nitrogen adsorption−desorption isotherm. The results showed that Ce(III)-IIP kept a uniform framework mesoporosity of SBA-15 but a decrease in Brunauer−Emmett−Teller surface area, pore volume, and average pore diameter. Batch adsorption tests were researched on the effects of solution pH value, mass of sorbent, and contact time at different initial Ce(III) concentrations and temperatures. The kinetic data well fitted the pseudo-second-order kinetic model compared with the pseudo-first-order model. The adsorption isotherm fitted Langmuir model and the dimensionless separation factor RL indicated favorable adsorption. In addition, the Gibbs free energy (ΔG0), entropy (ΔS0), and enthalpy (ΔH0) were calculated from the adsorption data. These values suggested that the adsorption of Ce(III) onto Ce(III)-IIP was a spontaneous and endothermic nature of the process. The relative selectivity coefficients for different metal ion were larger than that of the nonimprinted polymer, indicating that Ce(III)-IIP synthesized for Ce(III) had a higher selectivity specialism for this ion.
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Affiliation(s)
- Yan Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Sujun Tian
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiangguo Meng
- School of Biology and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212013, China
| | - Xiaohui Dai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zhanchao Liu
- School of Biology and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212013, China
| | - Minjia Meng
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Juan Han
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Rui Chen
- School of Biology and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212013, China
| | - Yongsheng Yan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Liang Ni
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
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18
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Aly Z, Graulet A, Scales N, Hanley T. Removal of aluminium from aqueous solutions using PAN-based adsorbents: characterisation, kinetics, equilibrium and thermodynamic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:3972-3986. [PMID: 24297464 DOI: 10.1007/s11356-013-2305-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 10/28/2013] [Indexed: 06/02/2023]
Abstract
Economic adsorbents in bead form were fabricated and utilised for the adsorption of Al(3+) from aqueous solutions. Polyacrylonitrile (PAN) beads, PAN powder and the thermally treated PAN beads (250 °C/48 h/Ar and 600 °C/48 h/Ar-H2) were characterised using different techniques including Fourier transform infrared spectroscopy, X-ray diffraction, specific surface analysis (Brunauer-Emmett-Teller), thermogravimetric analysis as well as scanning electron microscopy. Effects of pH, contact time, kinetics and adsorption isotherms at different temperatures were investigated in batch mode experiments. Aluminium kinetic data best fit the Lagergren pseudo-second-order adsorption model indicating a one-step, surface-only, adsorption process with chemisorption being the rate limiting step. Equilibrium adsorption data followed a Langmuir adsorption model with fairly low monolayer adsorption capacities suitable for freshwater clean-up only. Various constants including thermodynamic constants were evaluated from the experimental results obtained at 20, 40 and 60 °C. Positive values of ΔH° indicated that the adsorption of Al(3+) onto all three adsorbents was endothermic with less energy input required for PAN powder compared to PAN beads and low-temperature thermally treated PAN. Negative ΔG° values indicated that the aluminium adsorption process was spontaneous for all adsorbents examined.
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Affiliation(s)
- Zaynab Aly
- Institute of Materials Engineering, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee, Sydney, NSW, 2232, Australia,
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