Methyl orange adsorption studies on glutaraldehyde cross-linking chitosan/fluorapatite-based natural phosphate composite

Billah, Rachid El Kaim; Zaghloul, Ahmed; Ahsaine, Hassan Ait; BaQais, Amal; Khadoudi, Idris; Messaoudi, Nourddine El; Agunaou, Mahfoud; Soufiane, A.; Jugade, Ravin

doi:10.1080/03067319.2022.2130690

Cited by 27 publications

(9 citation statements)

References 59 publications

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“…Decreases were noticed in the average pore diameter from 7.86 to 5.50 nm after the modification of cross-linked chitosan, which confirms the incorporation of LDH into the polymer matrix (see Figure S2b,a). ,, Since the pores’ size was between 2 and 50 nm, it confirms the mesoporous behavior of the material. ,, The hysteresis loop shown in Figure S2a was of H4 type, which proves the complexity of the material . The Barrett-Joyner-Halenda (BJH) pore volume curve is shown in Figure S2b.…”

Section: Resultsmentioning

confidence: 60%

“…44 In MgAl-LDH, at lower 2θ values, strong diffraction peaks are attributed to characteristic reflections of crystalline nature. 21,45 LDH-loaded cross-linked chitosan shows peaks of the 003 and 012 planes of LDH and a broad peak of cross-linked chitosan, confirming the formation of LDH-loaded cross-linked chitosan.…”

Section: Physicochemical Characterizationmentioning

confidence: 66%

“…In XRD spectra (Figure a), it was observed that the characteristic peaks of chitosan disappeared in glutaraldehyde cross-linked chitosan, showing a broad peak centered at 2θ = 20° . In MgAl-LDH, at lower 2θ values, strong diffraction peaks are attributed to characteristic reflections of crystalline nature. , LDH-loaded cross-linked chitosan shows peaks of the 003 and 012 planes of LDH and a broad peak of cross-linked chitosan, confirming the formation of LDH-loaded cross-linked chitosan.…”

Section: Resultsmentioning

confidence: 82%

“…Between 200 and 500 °C, 40% loss in weight was observed due to the destruction of cross-linked chitosan. 21 , 45 , 46 Above 500 °C, the biopolymer was completely destroyed leaving behind stable oxides of magnesium and aluminum oxides. 51 In the DTA analysis of CSC, a first endothermic peak was observed in the range of 25–150 °C due to moisture removal ( Figure 2 d).…”

Section: Resultsmentioning

confidence: 99%

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Multifunctional Cross-Linked Shrimp Waste-Derived Chitosan/MgAl-LDH Composite for Removal of As(V) from Wastewater and Antibacterial Activity

et al. 2023

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This work synthesized a novel chitosan-loaded MgAl-LDH (LDH = layered double hyroxide) nanocomposite, which was physicochemically characterized, and its performance in As(V) removal and antimicrobial activity was evaluated. Chitosan-loaded MgAl-LDH nanocomposite (CsC@MgAl-LDH) was prepared using cross-linked natural chitosan from shrimp waste and modified by Mg−Al. The main mechanisms predominating the separation of As(V) were elucidated. The characteristic changes confirming MgAl-LDH modification with chitosan were analyzed through Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis-differential thermal analysis, and Brunauer-Emmett-Teller measurements. Porosity and the increased surface area play an important role in arsenic adsorption and microbial activity. Adsorption kinetics follows the general order statistically confirmed by Bayesian Information Criterion differences. To understand the adsorption process, Langmuir, Freundlich, and Liu isotherms were studied at three different temperatures. It was found that Liu's isotherm model was the best-fitted model. CsC@ MgAl-LDH showed the maximum adsorption capacity of 69.29 mg g −1 toward arsenic at 60 °C. It was observed that the adsorption capacity of the material rose with the increase in temperature. The spontaneous behavior and endothermic nature of adsorption was confirmed by the thermodynamic parameters study. Minimal change in percentage removal was observed with coexisting ions. The regeneration of material and adsorption−desorption cycles revealed that the adsorbent is economically efficient. The nanocomposite was very effective against Staphylococcus aureus and Bacillus subtilus.

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Section: Resultsmentioning

confidence: 60%

Section: Physicochemical Characterizationmentioning

confidence: 66%

Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

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Multifunctional Cross-Linked Shrimp Waste-Derived Chitosan/MgAl-LDH Composite for Removal of As(V) from Wastewater and Antibacterial Activity

et al. 2023

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“…12 Chemical modification is a commonly employed method to alter the adsorption characteristics of adsorbents by surface modification or functionalization. [13][14][15][16] Several studies have shown that the enhanced polarity of a modified resin could effectively improve the adsorption of polar aromatic compounds. 17,18 Moreover, RhB is an aromatic compound with a higher polarity, and should have enhanced adsorption capacity on the polar hyper-cross-linked resin because of the peculiarity of polarity matching.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Rhodamine B from aqueous solutions using polarity-tunable hyper-cross-linked resins

You¹,

Lin²,

Liu³

2023

New J. Chem.

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Adsorptive removal of synthetic dye from its aqueous solution by using chitosan-bentonite composite: DFT and experimental studies

Şenol,

Ertap,

Fernine

et al. 2024

Polym. Bull.

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This research investigates the adsorption efficiency of a chitosan-bentonite (Ch–B) composite in removing methyl orange (MO), a common textile dye, from aqueous solutions. The study integrates experimental and theoretical analyses, employing density functional theory (DFT) to gain insights into the molecular interactions between the composite material and MO molecules. The Ch–B composite was characterized using various techniques, including FT-IR spectroscopy, XRD, and SEM–EDX. The experimental results indicate that the Ch–B composite exhibits a high adsorption capacity for MO, with optimal conditions identified for efficient removal. The Langmuir model was found to best fit the experimental data and the adsorption capacity was 117 mg g−1. Adsorption thermodynamics showed that the adsorption process was spontaneous, feasible, and exothermic. DFT calculation results are correlated with experimental findings to confirm theoretical predictions and improve the overall understanding of the adsorption process. Electronic structure calculations reveal the nature of the interactions between the Ch–B composite and MO molecules, including hydrogen bonds and electrostatic forces.

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Methyl orange adsorption studies on glutaraldehyde cross-linking chitosan/fluorapatite-based natural phosphate composite

Cited by 27 publications

References 59 publications

Multifunctional Cross-Linked Shrimp Waste-Derived Chitosan/MgAl-LDH Composite for Removal of As(V) from Wastewater and Antibacterial Activity

Multifunctional Cross-Linked Shrimp Waste-Derived Chitosan/MgAl-LDH Composite for Removal of As(V) from Wastewater and Antibacterial Activity

Adsorption of Rhodamine B from aqueous solutions using polarity-tunable hyper-cross-linked resins

Adsorptive removal of synthetic dye from its aqueous solution by using chitosan-bentonite composite: DFT and experimental studies

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