Preparation and Adsorption Properties
of Chitosan-Modified Magnetic Nanoparticles
for Removal of Mo (VI) ions

Lei, Chao; Wang, Yao; Su, Chen; Li, Yafeng

doi:10.15244/pjoes/130039

Cited by 10 publications

(6 citation statements)

References 35 publications

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“…The Freundlich model is more suitable for adsorption on highly heterogeneous surfaces lacking a saturated adsorption platform, in which case inhomogeneous processes occurred on the adsorbed surfaces and the adsorption process involved adsorption in multiple molecular layers 7 . The adsorption process in this study followed the Langmuir model.…”

Section: Discussionmentioning

confidence: 99%

“…Chao et al 7 prepared chitosan-modified magnetic nanoparticles using a reverse suspension cross-linking method to address the issue of molybdenum exceeding the standard in mining wastewater. This material was used to adsorb molybdenum (VI) from water, and the results showed that the theoretical maximum adsorption capacity was determined to be 35.54 mg/g.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and adsorption properties of magnetic chitosan/sludge biochar composites for removal of Cu2+ ions

Zhang,

Liu,

Yin

et al. 2023

Sci Rep

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The magnetic chitosan/sludge biochar composite adsorbent was prepared using chitosan, Fe3O4, and sludge biochar as raw materials. The composite adsorbent was able to achieve rapid solid–liquid separation under an applied magnetic field. The morphology and microstructure of the composite adsorbent were characterized by FTIR, XRD, SEM, VSM, and BET analysis. The adsorption performance of the composite adsorbent on Cu2+ was investigated through static adsorption experiments, and the effects of adsorbent dosage, initial concentration of Cu2+, initial pH of the solution, and adsorption temperature on the adsorption efficiency of Cu2+ were discussed. The results showed that chitosan and Fe3O4 were successfully loaded on sludge biochar. When the initial concentration of Cu2+ was 30 mg/L, the dosage of the magnetic chitosan/sludge biochar composite material was 0.05 g, the adsorption time was 180 min, pH was 5, and the temperature was room temperature, the maximum removal rate of Cu2+ reached 99.77%, and the maximum adsorption capacity was 55.16 mg/g. The adsorption kinetics and adsorption isotherm data fitted well with the pseudo-second-order kinetic model and Langmuir adsorption isotherm model, indicating that the adsorption process was chemisorption with monolayer coverage.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and adsorption properties of magnetic chitosan/sludge biochar composites for removal of Cu2+ ions

Zhang,

Liu,

Yin

et al. 2023

Sci Rep

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show abstract

“…Linear regression analysis was performed on the isotherm data, and Figures 14(a where the adsorption surface undergoes a non-homogeneous process and the adsorption process involves multi-molecular layer adsorption 7 . In this study, the Langmuir model is more suitable for the adsorption of Cu 2+ by Fe3O4@CTS/SBC composite adsorbents.…”

Section: Adsorption Performance Evaluationmentioning

confidence: 99%

Preparation and Adsorption Properties of Magnetic chitosan/sludge biochar composites for Removal of Cu2+ions

Zhang

Wang

Nie

et al. 2023

Preprint

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The magnetic chitosan/sludge biochar composite adsorbent was prepared using chitosan, Fe3O4, and sludge biochar as raw materials. The composite adsorbent can achieve rapid solid-liquid separation under the action of an external magnetic field. The morphology and microstructure of the composite adsorbent were characterized by FTIR, XRD, SEM, VSM, and BET analysis. The adsorption performance of the composite adsorbent for Cu2+ was investigated through static adsorption experiments, and the effects of adsorbent dosage, initial concentration of Cu2+, initial pH value of the solution, and adsorption temperature on the adsorption efficiency of Cu2+ were discussed. The results showed that chitosan and Fe3O4 were successfully loaded onto the sludge biochar. When the initial concentration of Cu2+ was 30 mg/L, the dosage of the magnetic chitosan/sludge biochar composite material was 0.05 g, the adsorption time was 180 min, pH was 5, and the temperature was room temperature, the maximum removal rate of Cu2+ reached 99.77%, and the maximum adsorption capacity was 55.16 mg/g. The adsorption kinetics and adsorption isotherm data fit well with the pseudo-second-order kinetic model and Langmuir adsorption isotherm model, indicating a chemical adsorption process of monolayer coverage.

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“…It is one of the most studied biopolymers with great potential for various applications including medical, pharmaceutical and biotechnology because of its good biocompatibility, biodegradability and low toxicity (Namdeo and Mathur, 2018). Chitosan has a large number of active groups such as amino and hydroxyl groups, which not only have good adsorption performance but also have the characteristics of low cost and biodegradability (Chao et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of chitosan-coated magnetite nanoparticles using co-precipitation method for copper(II) ions removal in aqueous solution

Htwe

Maung

Naing

2022

WJE

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Purpose The purpose of this paper is to focus on the removal of copper(II) ions from aqueous model salt solution by using chitosan-coated magnetite nanoparticles. Design/methodology/approach The chitosan-coated magnetite nanoparticles were characterized using X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric differential thermal analysis. The adsorption of Cu(II) by using magnetite nanoparticles as an adsorbent was investigated under different adsorption conditions. The parameters studied were contact time, adsorbent dose and initial concentrations. Findings The sorption capacities of prepared samples were studied for the removal of Cu2+ ions from aqueous model solutions with varying experimental conditions of the initial metal concentration, contact time and dosage. It is found that the removal percent of Cu2+ ions increases with an increase in initial metal concentration, contact time and amount of dosage. Originality/value Based on the obtained results, this study recommends that chitosan-coated magnetite nanoparticles can also be applied for removal of some heavy metal ions and/or organic compounds in aqueous solution. It is recommended that this study be shared with the polymer-based nanomaterial researchers, especially material science.

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Preparation and Adsorption Properties of Chitosan-Modified Magnetic Nanoparticles for Removal of Mo (VI) ions

Cited by 10 publications

References 35 publications

Preparation and adsorption properties of magnetic chitosan/sludge biochar composites for removal of Cu2+ ions

Preparation and adsorption properties of magnetic chitosan/sludge biochar composites for removal of Cu2+ ions

Preparation and Adsorption Properties of Magnetic chitosan/sludge biochar composites for Removal of Cu2+ions

Synthesis of chitosan-coated magnetite nanoparticles using co-precipitation method for copper(II) ions removal in aqueous solution

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