Mechanistic investigation of ciprofloxacin recovery by magnetite–imprinted chitosan nanocomposite: Isotherm, kinetic, thermodynamic and reusability studies

Rasoulzadeh, Hassan; Mohseni‐Bandpei, Anoushiravan; Hosseini, Mohammad Javad; Safari, Mahdi

doi:10.1016/j.ijbiomac.2019.04.139

Cited by 69 publications

(20 citation statements)

References 47 publications

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“…In CHI, Fe 3 O 4 @CHI and Fe 3 O 4 @CHI–GLU spectra, C–O stretching vibration of glycosidic bonds was observed around 1075 cm −1 [81]. For CHI spectrum, the bands at 1319, 1379 and 1421 cm −1 can be referred to C–N stretching of amino groups and bending vibration of methylene and methyl groups, respectively [82,83]. For CHI and Fe 3 O 4 @CHI samples, the absorption around 1580 cm −1 is characteristic of –NH 2 bending vibration [83].…”

Section: Resultsmentioning

confidence: 99%

Immobilization of Lipase A from Candida antarctica onto Chitosan-Coated Magnetic Nanoparticles

Monteiro

Lima

Pinheiro

et al. 2019

IJMS

100

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In this communication, lipase A from Candida antarctica (CALA) was immobilized by covalent bonding on magnetic nanoparticles coated with chitosan and activated with glutaraldehyde, labelled CALA-MNP, (immobilization parameters: 84.1% ± 1.0 for immobilization yield and 208.0 ± 3.0 U/g ± 1.1 for derivative activity). CALA-MNP biocatalyst was characterized by X-ray Powder Diffraction (XRPD), Fourier Transform Infrared (FTIR) spectroscopy, Thermogravimetry (TG) and Scanning Electron Microscope (SEM), proving the incorporation of magnetite and the immobilization of CALA in the chitosan matrix. Besides, the immobilized biocatalyst showed a half-life 8–11 times higher than that of the soluble enzyme at pH 5–9. CALA showed the highest activity at pH 7, while CALA-MNP presented the highest activity at pH 10. The immobilized enzyme was more active than the free enzyme at all studied pH values, except pH 7.

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Section: Resultsmentioning

confidence: 99%

Immobilization of Lipase A from Candida antarctica onto Chitosan-Coated Magnetic Nanoparticles

Monteiro

Lima

Pinheiro

et al. 2019

IJMS

100

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“…Kinetic studies showed that the pseudo-second-order model fitted well with the experimental data. Therefore, it is suggested that MWCNTs/AC composite can effectively be used as a Fig. 14 Molecular structure of ciprofloxacin and its ionic forms with different pH values in aqueous solution (Rasoulzadeh et al 2019) potential tool for environmental applications, especially in antibiotic removal.…”

Section: Discussionmentioning

confidence: 99%

“…The optimum pH of the process is 7, and at this pH, CIP is in the form of bipolar (neutral), not anionic form. So here the effect of electrostatic gravity does not have much effect, and often the contaminant release solvent effect is affected (Rasoulzadeh et al 2019) (Fig. 14).…”

Section: Adsorption Mechanismmentioning

confidence: 92%

“…On the other hand, the adsorption of drugs by biodegradable and natural polymers is considered as one of the new methods for antibiotic removal. Polysaccharides-based adsorbents are particularly used to treat Pharmaceutical Industry Wastewater because of their easy availability and high removal capacities for a broad range of antibiotics (Rasoulzadeh et al 2019). Moreover, in order to improve the extraction properties of the polysaccharides-based adsorbents have been used extensively as adsorbents to produce the polysaccharide matrix and a synergistic effect of an inorganic filler (Massoudinejad et al 2019;Malakootian et al 2018c).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the activated carbon coated with multiwalled carbon nanotubes in removal of ciprofloxacin from aqueous solutions

et al. 2020

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Ciprofloxacin (CIP) is a commonly used antibiotic which is excreted in significant quantities and may likely be found in environments, especially wastewater. Thus, in the present study, we aimed to remove CIP from aqueous solutions using activated carbon supported with multivalent carbon nanotubes MWCNTs/AC. Herein, we prepared the MWCNTs/AC and the structural characterization of the adsorbent was performed using the BET, FTIR, and SEM methods. In order to obtain the optimal conditions of MWCNTs/AC activity, different experimental conditions including the pH, adsorbent dosage, contact time, initial CIP concentration, and temperature were examined. Afterward, to approach reality, the experiments were carried out under the optimal conditions using a sewage sample previously determined in terms of the BOD, COD, pH, EC, turbidity, and concentration of ciprofloxacin. Finally, the CIP levels were measured by HPLC. According to the results, the pH of 7, contact time of 30 min, adsorbent dosage of 20 mg/L, temperature of 40 °C, and initial CIP concentration of 20 mg/L were found to be the optimal conditions for MWCNTs/AC activity. In these conditions, the maximum removal efficiency of CIP from the synthetic and actual samples was 100% and 73%, respectively. Moreover, the adsorption behavior was in compliance with the pseudo-second-order, Freundlich isotherm kinetics. According to our findings, using MWCNTs/AC led to a considerable removal of CIP from the sewage samples. Thus, the use of this adsorbent is highly recommended in order to remove other antibiotics from water and wastewater.

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“…[ 4–6 ] In addition, the antibiotics can kill organisms when they are attached to the organisms by electrostatic interactions. [ 7–9 ] Probiotics, a microorganism that is widely used in aquaculture to enhance the immune response of aquaculture products, can be killed by excessive antibiotics, resulting in the declining of its function. [ 10,11 ] Therefore, the development of a novel technology to improve the survival rate of probiotics at the presence of antibiotic pollutants is of great significance.…”

Section: Introductionmentioning

confidence: 99%

A Removable Artificial Cell Wall for Withstanding Ciprofloxacin

Liang

Wang

et al. 2020

Macromolecular Bioscience

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The pollution of antibiotics in aquaculture environment is increasingly serious, and excessive antibiotics will kill the probiotics in aquaculture feed. How to improve the viability of probiotics in the antibiotics‐contaminated environment is of significance. In this study, a new strategy for protecting Saccharomyces cerevisiae cells in situ against antibiotics is constructed based on cell surface engineering technology by putting on wearable protective layers for cells. The protective layer is constructed around cellular surface via the self‐assembly of coacervate microdroplets that consist of carboxymethyl chitosan and carboxyl dextran. Without affecting the cell viability, the protective layer can grasp ciprofloxacin and decrease the contact of ciprofloxacin to cells and consequently improve the survival rate of cells when exposing to ciprofloxacin. This work highlights a facile strategy to establish removable artificial cell wall by biodegradable polysaccharides for improving the productivity of probiotics in antibiotic environments.

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Mechanistic investigation of ciprofloxacin recovery by magnetite–imprinted chitosan nanocomposite: Isotherm, kinetic, thermodynamic and reusability studies

Cited by 69 publications

References 47 publications

Immobilization of Lipase A from Candida antarctica onto Chitosan-Coated Magnetic Nanoparticles

Immobilization of Lipase A from Candida antarctica onto Chitosan-Coated Magnetic Nanoparticles

Evaluation of the activated carbon coated with multiwalled carbon nanotubes in removal of ciprofloxacin from aqueous solutions

A Removable Artificial Cell Wall for Withstanding Ciprofloxacin

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