TEMPO-oxidized cellulose beads for cationic dye adsorption

Wang, Qianqian; Liu, Simeng; Chen, Honglei; Li, Jun; Zhu, Qianqian

doi:10.15376/biores.17.4.6056-6066

Cited by 8 publications

(2 citation statements)

References 26 publications

(28 reference statements)

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“…The coefficient of determination of the pseudo-first-order rate constant K 1 was calculated to be greater than that of the pseudo-second-order kinetic constant K 2, and the opposite was true for q e . This phenomenon was similar to other literature reports ( Wang et al, 2022 ). Moreover, the R 2 values of the pseudo second-order kinetic model were higher than those of the pseudo first-order kinetic model, indicating that the pseudo-second order model was better suited to describe the kinetics of MB dye adsorption on hydrogels ( Figures 7A, B ).…”

Section: Resultssupporting

confidence: 93%

Enhanced hybrid hydrogel based on wheat husk lignin-rich nanocellulose for effective dye removal

Huang

Xu²,

Кузнецов³

et al. 2023

Front. Bioeng. Biotechnol.

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Polyvinyl alcohol (PVA) hydrogels were enhanced mechanically through the addition of lignin-rich nanocellulose (LCN), soluble ash (SA) and montmorillonite (MMT) for dye removal. The hybrid hydrogels reinforced with 33.3 wt% of LCN had a 163.0% increase in storage modulus as compared to the PVA/0LCN-33.3SM hydrogel. LCN can be added to the PVA hydrogel to alter its rheological properties. Additionally, hybrid hydrogels were highly efficient in removing methylene blue from wastewater, which was attributed to the synergistic effects of the PVA matrix supporting embedded LCN, MMT, and SA. The adsorption time (0–90 min) showed that the hydrogels containing MMT and SA had high removal efficiency, and the adsorption of methylene blue (MB) by PVA/20LCN-13.3SM was greater than 95.7% at 30°C. It was found that MB efficiency decreased with a high MMT and SA content. Our study provided a new method for the fabrication of polymers-based eco-friendly, low-cost and robust physical hydrogels for the MB removal.

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Section: Resultssupporting

confidence: 93%

Enhanced hybrid hydrogel based on wheat husk lignin-rich nanocellulose for effective dye removal

Huang

Xu²,

Кузнецов³

et al. 2023

Front. Bioeng. Biotechnol.

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“…Various studies have reported the absorption of cationic dyes by anionic IPNs, containing weakly acidic or strongly charged groups. The combination of electrostatic interactions with hydrophobic interactions is usually the driving force in the case of cationic species [ 56 ].…”

Section: Resultsmentioning

confidence: 99%

An Interpenetrating Polymer Network Hydrogel Based on Cellulose, Applied to Remove Colorant Traces from the Water Medium: Electrostatic Interactions Analysis

et al. 2022

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The main objective of this work was the removal of eosin Y and green malachite from an aqueous medium by using a cellulose-based biodegradable interpenetrated network (IPN). The IPN was obtained by the sequenced synthesis method. In the first step, cellulose was crosslinked with epichlorohydrin (ECH). In the second step, the obtained gels were swollen in a reactive mixture solution, which was based on the monomers 2-hydroxyethyl methacrylate (HEMA) and 1,6- hexanediol diacrylate (HDDA). After this, swelling equilibrium was reached through the gels’ exposition to UV radiation. An infrared spectroscopy (FTIR) was used to analyze the bond stretching, which confirmed the IPN’s formation. The swelling kinetics in aqueous mediums with different pH values showed a high swelling at a basic pH value and a low response in neutral and acidic media. The IPNs showed an improvement in water uptake, compared to the networks based on PHEMA or cellulose. The IPN was used to remove dyes from the water. The results showed that a high percentage of green malachite was removed by the IPN in six minutes of contact time. The experimental results were confirmed by the docking/modeling method of the system (IPN/Dye). The different physical interactions between the IPN and the dyes’ molecules were investigated. The interactions of the hydrogen bonds with malachite green were stronger than those with eosin Y, which was in good agreement with the experimental results.

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TEMPO-oxidized Cellulose Nanofibers/ Alginate Nanocomposite as a Promising nanocomposite Material for the Adsorption of Cationic Dyes

et al. 2023

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TEMPO-oxidized cellulose beads for cationic dye adsorption

Cited by 8 publications

References 26 publications

Enhanced hybrid hydrogel based on wheat husk lignin-rich nanocellulose for effective dye removal

Enhanced hybrid hydrogel based on wheat husk lignin-rich nanocellulose for effective dye removal

An Interpenetrating Polymer Network Hydrogel Based on Cellulose, Applied to Remove Colorant Traces from the Water Medium: Electrostatic Interactions Analysis

TEMPO-oxidized Cellulose Nanofibers/ Alginate Nanocomposite as a Promising nanocomposite Material for the Adsorption of Cationic Dyes

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