Synthesis and characterization of xylan-gelatin cross-linked reusable hydrogel for the adsorption of methylene blue

Seera, Sai Dileep Kumar; Kundu, Debashis; Gami, Pratik; Naik, Papu Kumar; Banerjee, Tamal

doi:10.1016/j.carbpol.2020.117520

Cited by 88 publications

(32 citation statements)

References 51 publications

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“…Dai et al 10 successfully prepared a magnetic xylan‐based hydrogel for H 2 O 2 detection by copolymerizing acylated xylan, acrylamide (AM), and N ‐isopropylacrylamide. Similarly, xylan hydrogels with fast temperature response properties were also successfully synthesized by Wang et al 11 In addition, xylan hydrogels with high strength, high adsorption performance, and other properties, such as response properties for pH, organic solvents, light, and salts, have been extensively investigated 12,13 . Although, xylan hydrogels have many excellent properties, some defects, such as low strength and poor toughness, limit their applications.…”

Section: Introductionmentioning

confidence: 99%

A green composite hydrogel based on xylan and lignin with adjustable mechanical properties, high swelling, excellent UV shielding, and antioxidation properties

Wang

et al. 2022

J of Applied Polymer Sci

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This study successfully prepared a novel green composite hydrogel based on carboxymethyl xylan and lignin with adjustable mechanical properties, high swelling, excellent UV shielding, and antioxidation performance. The structure and morphology of the hydrogel were characterized by Fourier transform infrared spectra, scanning electron microscopy, thermogravimetric analysis, rheological analysis, and swelling ratio. Results showed that lignin could significantly improve the mechanical properties of composite hydrogels. The compression stress and toughness of the composite hydrogel contained lignin increased by 39% and 60%, respectively, and the compressive deformation reached 90%. In addition, the addition of lignin increased the swelling ratio of the composite hydrogel reached 79.9 g/g. In addition, the composite hydrogel exhibited excellent UV shielding and antioxidation performance. The removal ratio of UV and free radicals is as high as 80% and 90%, respectively. The simple procedure and cost‐effective lignin as raw material for hydrogel with adjustable properties are favorable for medical‐biological applications.

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Section: Introductionmentioning

confidence: 99%

A green composite hydrogel based on xylan and lignin with adjustable mechanical properties, high swelling, excellent UV shielding, and antioxidation properties

Wang

et al. 2022

J of Applied Polymer Sci

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“…As can be observed, the maximum dye biosorption was achieved around pH 5, and there was rapid removal of dye within 105 min contact time and a low increase was achieved after this period. This can be attributed to a decrease in available sites as they become saturated with dye molecules [38]. Figure 5b denotes the interaction between pH and initial concentration (contact time and temperature was fixed at zero level).…”

Section: Optimization Of Dye Adsorption By Response Surface Methodologymentioning

confidence: 99%

Sustainable Durio zibethinus-Derived Biosorbents for Congo Red Removal from Aqueous Solution: Statistical Optimization, Isotherms and Mechanism Studies

et al. 2021

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This investigation reports on the biosorption mechanism of Congo Red dyes (CR) in aqueous solution using acid-treated durian peels, prepared for this study. The biosorbent nature was characterized using the Scanning Electron Microscopy (SEM), Fourier Transform infrared spectroscopy (FT-IR) and Brunaure-Emmet-Teller (BET). The effect of process parameters within operational range of pH (2–9), contact time (10–200 min), initial concentration (25–400 mg g−1) and temperature (25–65 °C) for the optimum removal of CR dyes was investigated using central composite design (CCD) under response surface methodology (RSM), and revealed that the optimum condition of biosorption was achieved around a pH of 5.5, contact time of 105 min at initial concentration of 212.5 mg L−1 within 45 °C temperature, which corresponds to 95.2% percent removal of CR. The experimental data fitted better to the second order polynomial model, with a correlation coefficient R2 value of 0.9917 and the Langmuir isotherm model with biosorption capacity of 107.52 mg g−1. Gibbs free energy indicated that the adsorption of CR dyes was spontaneous. The mechanism of the adsorption of CR dyes revealed that the biosorption of CR dyes investigated under different operational conditions show that under acidic pH, the adsorption efficiency of the acid treated durian peels is enhanced for the adsorption of CR dye molecules.

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“…The relationship between equilibrium MB-concentration (Ce) in the solution and the adsorption capacity (qe) of MWSS adsorbent can be obtained with different adsorption isotherm prototypes. To identify the MB-adsorption mechanism, Langmuir and Freundlich's models were studied (Seera et al 2021). According to the Langmuir isotherm model, the MB-molecules adsorb on the MWSS adsorbent's surface and thus produce a monolayer of MB-molecules on the MWSS surface-active sites through real chemical bonds.…”

Section: 4molecular Dynamics (Md) Calculationsmentioning

confidence: 99%

Mesoporous spongy Ni–Co oxides@wheat straw-derived SiO2 for adsorption and photocatalytic degradation of methylene blue pollutants

et al. 2022

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The exploitation and employment of agricultural waste in polluted water treatment is one of the most important cost-effective approaches. Therefore, a novel mesoporous spongy adsorbent/photocatalyst was successfully synthesized through the grafting of nickel and cobalt oxides nanocomposites with wheat straw-derived SiO2. Nickel and cobalt oxides were added to enhance the functionality of wheat straw-derived SiO2. This synthesis methodology presents a simplistic, cost-effective, and eco-approachable alternative to getting an adsorbent and photocatalyst for the adsorption and photocatalytic degradation of methylene blue (MB) pollutants from wastewater. The modified wheat straw-derived SiO2 (MWSS) was characterized via XRD, SEM, EDX, TGA, FTIR, and nitrogen adsorption. Molecular dynamics computational calculations were performed to comprehend the ability of methylene blue to adjust the WSDS surface. The experiments of adsorption and photodegradation trials were performed to optimize the pH, contact time, initial MB-concentration, and temperature parameters. Furthermore, kinetics and isotherm models were checked to explain the MBremoval mechanism using mesoporous spongy MWSS. The current work indicated that the 2 mesoporous MWSS adsorbent/photocatalyst provided efficient adsorption capability (79%), significant photocatalytic performance (93%), and higher solidity during reusability as well.This study suggests an efficient composite that contributes to getting rid of the MB pollutants from wastewater.

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Synthesis and characterization of xylan-gelatin cross-linked reusable hydrogel for the adsorption of methylene blue

Cited by 88 publications

References 51 publications

A green composite hydrogel based on xylan and lignin with adjustable mechanical properties, high swelling, excellent UV shielding, and antioxidation properties

A green composite hydrogel based on xylan and lignin with adjustable mechanical properties, high swelling, excellent UV shielding, and antioxidation properties

Sustainable Durio zibethinus-Derived Biosorbents for Congo Red Removal from Aqueous Solution: Statistical Optimization, Isotherms and Mechanism Studies

Mesoporous spongy Ni–Co oxides@wheat straw-derived SiO2 for adsorption and photocatalytic degradation of methylene blue pollutants

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