Zwitterion composite chitosan-epichlorohydrin/zeolite for adsorption of methylene blue and reactive red 120 dyes

Jawad, Ali H.; Abdulhameed, Ahmed Saud; Reghioua, Abdallah; Yaseen‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬, Zaher Mundher

doi:10.1016/j.ijbiomac.2020.07.014

Cited by 185 publications

(39 citation statements)

References 57 publications

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“…However, Fig. 6(b) showed that the pH solution did not influence the adsorption performance of S-CS-MT due to the buffering effect of the adsorbent [28]. The average MB uptake from pH 4 to 12 was 2.56 mg g -1 , and the pHpzc calculated for S-CS-MT was 7.2.…”

Section: Adsorption Studiesmentioning

confidence: 93%

“…However, higher MB concentrations require a longer time to reach the equilibrium state. This is because the MB molecules require more time to overcome the mass resistance to diffuse into the inner surface of the adsorbent [28]. The equilibrium state was attained at 60 minutes for MB concentration of 200 to 400 mg L -1 .…”

Section: The Effect Of Initial Mb Concentration and Contact Time On Mb Uptake By S-cs-mt Ismentioning

confidence: 99%

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Microwave Enhanced Synthesis of Sulfonated Chitosan-Montmorillonite for Effective Removal of Methylene Blue

et al. 2021

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In this work, sulfonated chitosan montmorillonite composite (S-CS-MT) beads were synthesized using a microwave irradiation method designed to have a better saving-time procedure. The potency of S-CS-MT as an adsorbent was assessed for the removal of cationic dyes such as methylene blue (MB) from aqueous solution. The batch adsorption experiments indicated that MB adsorption onto S-CS-MT follows the Pseudo-second-order kinetic and Langmuir isotherm model. The maximum extent obtained from the Langmuir isotherm model for MB adsorption was 188.2 mg g -1 at 303 K. The thermodynamic study indicated that the adsorption reaction is favorable and spontaneous. These findings indicated that montmorillonite chitosan grafted with the sulfonate group has the ability and efficacy as biohybrid adsorbent for the adsorption of cationic dyes.

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Section: Adsorption Studiesmentioning

confidence: 93%

Section: The Effect Of Initial Mb Concentration and Contact Time On Mb Uptake By S-cs-mt Ismentioning

confidence: 99%

Microwave Enhanced Synthesis of Sulfonated Chitosan-Montmorillonite for Effective Removal of Methylene Blue

et al. 2021

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“…This finding signifies that the CHT-GLA/ZnO/Fe3O4 surface at pH value greater than pHpzc acquires a negative charge. Thus, the CHT-GLA/ZnO/Fe3O4 surface at acidic environment (pH =4) turns to a positive charge due to the increase of H + concentration in the solution [43]. Accordingly, electrostatic attractions will be formed between the surface cationic groups of the CHT-GLA/ZnO/Fe3O4 and the RBBR molecules as outlined in Eq.…”

Section: Optimization Of Rbbr Removalmentioning

confidence: 99%

Magnetic Chitosan-Glutaraldehyde/Zinc Oxide/Fe3O4 Nanocomposite: Optimization and Adsorptive Mechanism of Remazol Brilliant Blue R Dye Removal

et al. 2021

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A magnetic Schiff's base chitosan-glutaraldehyde/Fe3O4 composite (CHT-GLA/ZnO/Fe3O4) was developed by incorporating zinc oxide (ZnO) nanoparticles into its structure to prepare an efficient adsorbent for the removal of remazol brilliant blue R (RBBR) dye. The CHT-GLA/ZnO/Fe3O4 was characterized by the following methods: CHN, BET, FTIR, XRD, SEM-EDX, pHpzc, and potentiometric titrations. Box-Behnken design based on response surface methodology was used to optimize the effects of the A: ZnO nanoparticles loading (0-50%), B: dose (0.02-0.1 g), C: pH (4-10), D: temperature (30-60 °C), and time E: (10-60 min) on the synthesis of the magnetic adsorbent and the RBBR dye adsorption. The experimental data of kinetics followed the pseudo-second order model, while isotherms showed better fit to Freundlich and Temkin models. The maximum adsorption capacity of the target nanocomposite (CHT-GLA/Fe3O4 containing 25% ZnO or CHT-GLA/ZnO/Fe3O4-25) was reached of 176.6 mg/g at 60 °C. The adsorption mechanism of RBBR onto CHT-GLA/ZnO/Fe3O4 nanocomposite can be attributed to multi-interactions including electrostatic attractions, hydrogen bonding, Yoshida Hbonding, and n-π interactions. This study offers a promising hybrid nanobiomaterial adsorbent in environmental nanotechnology to separate and remove the contaminants such as organic dyes from wastewater.

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“…Living organisms health could be damaged in many different ways, 8–18 even altering complete ecosystems 19 . In particular, the cationic dye methylene blue (MB) is found to be causing asthma, heart rate increasing, nausea, vomiting, skin irritation, and diverse eyes damages including permanent blindness 20–23 . On the other hand, among the most commonly found anionic dyes is the azo derivative compound methyl orange (MO) and its most outstanding permanent potential damages include their capability to act as both mutagenic and carcinogenic agent 24,25 …”

Section: Introductionmentioning

confidence: 99%

“…19 In particular, the cationic dye methylene blue (MB) is found to be causing asthma, heart rate increasing, nausea, vomiting, skin irritation, and diverse eyes damages including permanent blindness. [20][21][22][23] On the other hand, among the most commonly found anionic dyes is the azo derivative compound methyl orange (MO) and its most outstanding permanent potential damages include their capability to act as both mutagenic and carcinogenic agent. 24,25 Dye pollutants sources are usually related to wastewaters from the dying, printing and textile industries.…”

Section: Introductionmentioning

confidence: 99%

Tillandsia Aeranthos flower‐like magnetic nanostructures confined into polyvinyl alcohol beads

Actis

Zélis

Álvarez

et al. 2020

J of Applied Polymer Sci

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Magnetic beads composed by polyvinyl alcohol and iron oxides were developed and fully characterized. The materials were not only cross‐linked by a physical treatment but also the magnetic nanoparticles (MNPs) are acting as cross‐linking dots. Interestingly, the analysis of scanning electron micrographs revealed that, in the case of hydrated samples, flower‐like structures (average diameter 6–9 μm) being constituted by MNPs were present, whereas when the beads were dried the MNPs structure changed to porous spheres (average diameter 2–3 μm). Some of the prepared materials were tested to determine their capability to act as water remediation devices, and good removal results were obtained toward both methylene blue (average removal efficiency higher than 80%) and methyl orange (average removal efficiency lower than 30%) adsorption. The experiments performed confirmed that the adsorbent, once the treatment has ended, can be removed off through the simple employment of a permanent magnet.

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Zwitterion composite chitosan-epichlorohydrin/zeolite for adsorption of methylene blue and reactive red 120 dyes

Cited by 185 publications

References 57 publications

Microwave Enhanced Synthesis of Sulfonated Chitosan-Montmorillonite for Effective Removal of Methylene Blue

Microwave Enhanced Synthesis of Sulfonated Chitosan-Montmorillonite for Effective Removal of Methylene Blue

Magnetic Chitosan-Glutaraldehyde/Zinc Oxide/Fe3O4 Nanocomposite: Optimization and Adsorptive Mechanism of Remazol Brilliant Blue R Dye Removal

Tillandsia Aeranthos flower‐like magnetic nanostructures confined into polyvinyl alcohol beads

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