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Zheng X, Shen C, Deng Z, Pan C, Guo Y. Application of a novel polymer cross-linked with magnetite for efficient norfloxacin adsorption at a wide pH range. ENVIRONMENTAL RESEARCH 2024; 249:118471. [PMID: 38354888 DOI: 10.1016/j.envres.2024.118471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 02/02/2024] [Accepted: 02/10/2024] [Indexed: 02/16/2024]
Abstract
Nowadays, NOR-containing wastewater has placed huge pressure on global ecology. In this study, a chemically-modified chitosan-based polymer was cross-linked with magnetite to prepare a novel magnetic composite adsorbent named Fe3O4/CS-P(AM-SSS) for norfloxacin (NOR) removal. The preparation conditions were optimized by single factor experiments and response surface methodology. A series of characterization analyses were carried out on the morphology, structure, and properties of Fe3O4/CS-P(AM-SSS), verifying that Fe3O4/CS-P(AM-SSS) was successfully prepared. Batch adsorption experiments showed that NOR was efficiently removed by Fe3O4/CS-P(AM-SSS), with a broad pH applicability of 3-10, short adsorption equilibrium time of 60 min, maximum adsorption capacity of 268.79 mg/g, and high regeneration rate of 86% after eight adsorption-desorption cycles. Due to the three-dimensional network structure and abundant functional groups provided by modified chitosan polymer, the superior adsorption capability of Fe3O4/CS-P(AM-SSS) was achieved through electrostatic interaction, π-π stacking, hydrophobic interaction, and hydrogen bonding. Adsorption process was exothermic and well fitted by the pseudo-second-order kinetic model and the Langmuir isothermal model. The presence of cations had a slight inhibitory effect on NOR adsorption, while humic acid nearly had no effect. In model swine wastewater, 90.3% NOR was removed by Fe3O4/CS-P(AM-SSS). Therefore, with these superior characteristics, Fe3O4/CS-P(AM-SSS) was expected to be an ideal material for treating NOR-containing wastewater in the future.
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Affiliation(s)
- Xinyu Zheng
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; Jiangsu Provincial Key Laboratory of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Cong Shen
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Ziran Deng
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Chenqi Pan
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Yongfu Guo
- Department of Municipal Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou, 215009, Jiangsu, China.
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Chen H, Wang X, Lv M, She Y, Zhang Z, Cao X. Preparation of metal-organic framework @molecularly imprinted polymers for extracting N-nitrosamines in salted vegetables. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1231:123942. [PMID: 38007915 DOI: 10.1016/j.jchromb.2023.123942] [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: 07/13/2023] [Revised: 08/11/2023] [Accepted: 11/19/2023] [Indexed: 11/28/2023]
Abstract
In this paper, the novel metal-organic framework @molecularly imprinted polymers were prepared and applied in extracting N-nitrosamines from salted vegetables. The imprinted polymers were coated on the surface of MIL-101 using multi-dummy template molecules (5-nonanol, benzhydrol and N-formylpyrrolidine). The characterization and adsorbing experiments showed that the hybrid imprinted polymers presented spherical particles with typically core-shell structure, and exhibited high adsorption capacity (maximum capacity: 46.85 mg/g) and fast equilibrium rate (only 5 min) for N-nitrosamines. Various parameters (sample loading solvent, pH, washing solvent, elution solvent and elution volume) affecting solid-phase extraction were optimized. Under the optimum conditions, the solid-phase extraction process based on the hybrid polymers combined with high performance liquid chromatography-ultraviolet detection method was established and applied to analyze N-nitrosamines in different salted vegetables. The results showed that the developed method produced the linear relationship between the peak areas versus the N-nitrosamines concentrations of 0.2-10 µg/g with limit of detections from 20.6 to 76.1 ng/g. The spiked recovery of N-nitrosamines in the salted vegetable samples was in the range of 66-100.5 % with relative standard deviation from 0.1 to 3.4 %. Those results demonstrated that the established method was sensitive and efficient for directly enriching and analyzing trace N-nitrosamines in salted vegetables.
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Affiliation(s)
- Haiyan Chen
- College of Life Science, Yantai University, Yantai 264005, PR China
| | - Xinyu Wang
- College of Life Science, Yantai University, Yantai 264005, PR China
| | - Meijin Lv
- College of Life Science, Yantai University, Yantai 264005, PR China
| | - Yongxin She
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Ministry of Agriculture of China, Beijing 100081, PR China
| | - Ziping Zhang
- College of Life Science, Yantai University, Yantai 264005, PR China
| | - Xiaolin Cao
- College of Life Science, Yantai University, Yantai 264005, PR China.
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Hu G, Wu T, Liu Z, Gao S, Hao J. Application of molecular imprinting technology based on new nanomaterials in adsorption and detection of fluoroquinolones. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:2467-2479. [PMID: 37183439 DOI: 10.1039/d3ay00353a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Irrational use of fluoroquinolones (FQs) can lead to allergic reactions, adverse reactions to the heart and damage of the liver; thus, it is of great significance to establish rapid, sensitive and accurate detection methods for FQs. Molecularly imprinted polymers (MIPs) with specific structures synthesized by molecular imprinting technology (MIT) are widely used for the detection of FQs due to their high specificity, high sensitivity and stable performance. Recently, new functional nanomaterials with different morphologies and sizes, which can provide rich sites for surface chemical reactions, have attracted more and more attention of the researchers. Thus, the application status and development prospects of MIT based on new nanomaterials in the adsorption and detection of FQs were summarized in this study, providing a theoretical basis and technical guarantee for the development of new and efficient food safety analysis strategies based on MIPs.
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Affiliation(s)
- Gaoshuang Hu
- College of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China.
| | - Tianqi Wu
- College of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China.
| | - Ziyang Liu
- College of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China.
| | - Shan Gao
- College of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China.
| | - Jianxiong Hao
- College of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China.
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Deep eutectic solvent-imprinted polymer based on magnetic UiO-66-NH2 for fast and selective removal of benzydamine hydrochloride in environmental samples. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Zhao J, Wang Y, Zhang J, Yue Y, Liu Q, Qian G. Accessibility control of Cu sites to enhance adsorption capacity of ultra-low-concentration methyl mercaptan. CHEMOSPHERE 2022; 305:135511. [PMID: 35777537 DOI: 10.1016/j.chemosphere.2022.135511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 06/13/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
Methyl mercaptan (MM) is a typical malodorous gas and low-concentration MM makes human uncomfortable. Adsorption is applied in industry to remove MM. However, adsorptive-site agglomeration results in that adsorbent is not fully utilized. In this work, pore size and unsaturated-site amount of Cu-based metal-organic frameworks (MOFs) were regulated by using different ligands to increase adsorptive-site accessibility for MM. As a result, when Cu2+ sites were imbedded in MOFs network, these sites were inaccessible for MM; when Cu2+ sites were occupied by none-network organics, these sites were accessible for MM after simple activation; when Cu2+ sites were occupied by water, these sites were the most effective for MM removal among above site species. Furthermore, with the increase of bonding sites in ligands, channel pore size of MOFs was increased. Both pore size and unsaturated-site amount were important to MM removal. When above MOFs were used in purification of ultra-low-concentration MM, the regulated MOFs with a big pore size (11 and 5 Å) and water-occupied sites showed a best removal capacity of 160.3 mg g-1. The main result of this work is in favor of understanding structure-efficiency relationship in MOFs. This work also helps to develop effective adsorbents for ultra-low-concentration pollutants.
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Affiliation(s)
- Jiachun Zhao
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China
| | - Yixin Wang
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China
| | - Jia Zhang
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China.
| | - Yang Yue
- MGI of Shanghai University, Xiapu Town, Xiangdong District, Pingxiang City, Jiangxi, 337022, PR China.
| | - Qiang Liu
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road, Shanghai, 200444, PR China
| | - Guangren Qian
- MGI of Shanghai University, Xiapu Town, Xiangdong District, Pingxiang City, Jiangxi, 337022, PR China
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Zare EN, Fallah Z, Le VT, Doan VD, Mudhoo A, Joo SW, Vasseghian Y, Tajbakhsh M, Moradi O, Sillanpää M, Varma RS. Remediation of pharmaceuticals from contaminated water by molecularly imprinted polymers: a review. ENVIRONMENTAL CHEMISTRY LETTERS 2022; 20:2629-2664. [PMID: 35431714 PMCID: PMC8999999 DOI: 10.1007/s10311-022-01439-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 03/15/2022] [Indexed: 05/03/2023]
Abstract
The release of pharmaceuticals into the environment induces adverse effects on the metabolism of humans and other living species, calling for advanced remediation methods. Conventional removal methods are often non-selective and cause secondary contamination. These issues may be partly solved by the use of recently-developped adsorbents such as molecularly imprinted polymers. Here we review the synthesis and application of molecularly imprinted polymers for removing pharmaceuticals in water. Molecularly imprinted polymers are synthesized via several multiple-step polymerization methods. Molecularly imprinted polymers are potent adsorbents at the laboratory scale, yet their efficiency is limited by template leakage and polymer quality. Adsorption performance of multi-templated molecularly imprinted polymers depends on the design of wastewater treatment plants, pharmaceutical consumption patterns and the population serviced by these wastewater treatment plants.
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Affiliation(s)
| | - Zari Fallah
- Faculty of Chemistry, University of Mazandaran, 47416-95447 Babolsar, Iran
| | - Van Thuan Le
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang, 55000 Vietnam
- The Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang, 55000 Vietnam
| | - Van-Dat Doan
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Ho Chi Minh, 70000 Vietnam
| | - Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, 80837 Mauritius
| | - Sang-Woo Joo
- Department of Chemistry, Soongsil University, Seoul, 06978 South Korea
| | - Yasser Vasseghian
- Department of Chemistry, Soongsil University, Seoul, 06978 South Korea
| | - Mahmood Tajbakhsh
- Faculty of Chemistry, University of Mazandaran, 47416-95447 Babolsar, Iran
| | - Omid Moradi
- Department of Chemistry, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028 South Africa
| | - Rajender S. Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University in Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
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