Uniform and stable immobilization of metal-organic frameworks into chitosan matrix for enhanced tetracycline removal from water

Zhao, Rui; Ma, Tingting; Zhao, Shuai; Rong, Huazhen; Tian, Yuyang; Zhu, Guangshan

doi:10.1016/j.cej.2019.122893

Cited by 276 publications

(75 citation statements)

References 56 publications

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“…Therefore, it is not surprising that it has been modified with a variety of other additives to form composites or hybrids. These additives include cellulose [ 125 , 126 ], starch [ 127 ], other biopolymers such as alginate [ 128 ], gelatin [ 129 ], clays, such as bentonite [ 130 ], zeolites [ 131 ], metal organic frameworks (MOFs) [ 132 ], conducting polymers, such as polypyrrole [ 133 ] and other polymeric systems comprising methacrylamide [ 134 ],polyacrylamide [ 135 ], polyurethane [ 136 ], poly(vinyl alcohol) [ 137 ] and lignosulfonate [ 138 ]. These additives are interesting because they can form interpenetrated polymers with chitosan.…”

Section: Chitosan Supportsmentioning

confidence: 99%

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

et al. 2021

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The quality of water is continuously under threat as increasing concentrations of pollutants escape into the aquatic environment. However, these issues can be alleviated by adsorbing pollutants onto adsorbents. Chitosan and its composites are attracting considerable interest as environmentally acceptable adsorbents and have the potential to remove many of these contaminants. In this review the development of chitosan-based adsorbents is described and discussed. Following a short introduction to the extraction of chitin from seafood wastes, followed by its conversion to chitosan, the properties of chitosan are described. Then, the emerging chitosan/carbon-based materials, including magnetic chitosan and chitosan combined with graphene oxide, carbon nanotubes, biochar, and activated carbon and also chitosan-silica composites are introduced. The applications of these materials in the removal of various heavy metal ions, including Cr(VI), Pb(II), Cd(II), Cu(II), and different cationic and anionic dyes, phenol and other organic molecules, such as antibiotics, are reviewed, compared and discussed. Adsorption isotherms and adsorption kinetics are then highlighted and followed by details on the mechanisms of adsorption and the role of the chitosan and the carbon or silica supports. Based on the reviewed papers, it is clear, that while some challenges remain, chitosan-based materials are emerging as promising adsorbents.

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Section: Chitosan Supportsmentioning

confidence: 99%

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

et al. 2021

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“…A is the cross-sectional area of the adsorption column (cm 2 ). The adsorption capacity q is calculated according to Equation (2) [15,35]:…”

Section: Column Experimentsmentioning

confidence: 99%

“…Thus, it is necessary to develop effective treatment options to reduce their release into the environment. Up to now, various methods to remove PPCPs from wastewater have been developed, including photocatalysis [8,9], advanced oxidation [10,11], electrocatalysis [12,13], adsorption [14,15] and so on.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Adsorption of Sulfamethoxazole from Aqueous Solution by Lignite Activated Coke

Chen

et al. 2020

Materials

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In this paper, lignite activated coke was used as adsorbent for dynamic column adsorption experiments to remove sulfamethoxazole from aqueous solution. The effects of column height, flow rate, initial concentration, pH and humic acids concentration on the dynamic adsorption penetration curve and mass transfer zone length were investigated. Results showed penetration time would be prolonged significantly by increasing column height, while inhibited by the increasement of initial concentration and flow rate. Thomas and Yoon-Nelson model and the Adams-Bohart model were used to elucidate the adsorption mechanism, high coefficients of R2 > 0.95 were obtained in Thomas model for most of the adsorption entries, which revealed that the adsorption rate could probably be dominated by mass transfer at the interface. The average change rates of mass transfer zone length to the changes of each parameters, such as initial concentration, the column height, the flow rate and pH, were 0.0003, 0.6474, 0.0076, 0.0073 and 0.0191 respectively, revealed that column height may play a vital role in dynamic column adsorption efficiency. These findings suggested that lignite activated coke can effectively remove sulfamethoxazole contaminants from wastewater in practice.

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“…In this way, they can adequately interact with different molecules through electrostatic interactions, H-bonding, hydrophobic interaction, and π- π stacking. Several MOFs have been recently employed for drug remediation, such as H-KUST 1 (H-KUST: Hong Kong University of Science and Technology), MIL-53, MIL-100, MIL-101 (MIL: Materiaux de l’Institut Lavoisier), UiO-66 (UiO: Universitetet i Oslo), and ZIFs (ZIF: Zeolitic Imidazolate Framework), showing remarkable affinities towards those organic molecules [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ]. However, the effect of some key parameters, such as the use of water not previously purified, natural pH, and µg per liter drug concentration, seems not to have been deeply investigated yet.…”

Section: Introductionmentioning

confidence: 99%

Zinc Based Metal-Organic Frameworks as Ofloxacin Adsorbents in Polluted Waters: ZIF-8 vs. Zn3(BTC)2

Capsoni

Guerra

Puscalau

et al. 2021

IJERPH

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Two different zinc-based metal-organic frameworks (MOFs) were investigated to remove one of the most used fluoroquinolone antibiotic, Ofloxacin (OFL), from polluted water. The most common zeolitic imidazolate framework-8 (ZIF-8) and the green Zn(II) and benzene-1,3,5-tri-carboxylate (Zn3(BTC)2) were prepared through a facile synthetic route and characterized by means of Fourier-Transform Infrared (FT-IR) Spectroscopy, X-ray Powder Diffraction (XRPD), and Scanning Electron Microscopy (SEM) analyses. The two MOFs were compared in terms of both adsorption and kinetic aspects under real conditions (tap water, natural pH). Results showed that OFL was adsorbed in remarkable amounts, 95 ± 10 and 25.3 ± 0.8 mg g−1 on ZIF-8 and Zn3(BTC)2, respectively, following different mechanisms. Specifically, a Langmuir model well described the ZIF-8 profile, while for Zn3(BTC)2, cooperative adsorption occurred. Moreover the kinetic results were quite different, pseudo-second-order and sigmoidal, respectively. The suitability of ZIF-8 and Zn3(BTC)2 as adsorbent phases for water depollution was tested on tap water samples spiked with OFL 10 µg L−1. The obtained removal efficiencies, of 88% for ZIF-8 and 72% for Zn3(BTC)2, make these materials promising candidates for removing fluoroquinolone antibiotics (FQs) from polluted waters, notwithstanding their limited reusability in tap water, as demonstrated by in-depth characterization of the two MOFs after usage.

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Uniform and stable immobilization of metal-organic frameworks into chitosan matrix for enhanced tetracycline removal from water

Cited by 276 publications

References 56 publications

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

Dynamic Adsorption of Sulfamethoxazole from Aqueous Solution by Lignite Activated Coke

Zinc Based Metal-Organic Frameworks as Ofloxacin Adsorbents in Polluted Waters: ZIF-8 vs. Zn3(BTC)2

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