Excellent regeneration, easy separation and high capacity of 3D chitosan–melamine sponge composites for anionic dye removal

Zeng, Yang; Liu, Xin; Zhang, Yimo; Qin, Yan; Tang, Xiangtao; Zhang, Wenqing; Zhang, Lingfan

doi:10.1039/d2nj05954a

Cited by 6 publications

(1 citation statement)

References 51 publications

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“…The Freundlich and Langmuir isotherm models are commonly used to explain the physicochemical adsorption phenomena of cationic dyes in their interaction with the surface of adsorption materials. 40 The tting results of the two isothermal models for the adsorption of MB dye on MNSR1/2, MNSR1/1, MNSR2/1, and NSR2/0 are © 2024 The Author(s). Published by the Royal Society of Chemistry shown in Fig.…”

Section: Adsorption Behavior Of Mnsrsmentioning

confidence: 99%

Magnetically nanorized seaweed residue for the adsorption of methylene blue in aqueous solutions

Yang,

Liu,

Huang

et al. 2024

RSC Adv.

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Section: Adsorption Behavior Of Mnsrsmentioning

confidence: 99%

Magnetically nanorized seaweed residue for the adsorption of methylene blue in aqueous solutions

Yang,

Liu,

Huang

et al. 2024

RSC Adv.

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Upcycling of easy separated Casuarina equisetifolia fruit waste as a biosorbent: tailoring the surface modification to enhance selective removal of cationic dye or simultaneously removal of cationic and anionic dyes

Radwan,

Omar,

Marey

2023

Appl Water Sci

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This study aimed at the valorization of the abundant and underutilized Casuarina equisetifolia fruit waste (CEFW) biomass as an intact easily separable biosorbent for the treatment of dye-polluted water. The intact CEFW was chemically modified to improve its selective biosorption of MB, or to simultaneously remove MB and MO. H2O2 treatment increased the surface functional groups, created pores, and enhanced the selective biosorption of MB. CTAB treatment introduced quaternary ammonium groups and enabled the simultaneously removal of MB and MO. The biosorption of MB by H2O2-treated CEFW was optimum at pH 6 and increased with the mass of the biosorbent. The pH can be adjusted to enhance the biosorption efficiency of the CTAB-treated CEFW toward MB or MO. pH 6 achieves balanced simultaneous removal of MB and MO. The kinetic and isotherm studies revealed that electrostatic interactions and chemisorption dominate the biosorption process which has multilayer character. The single and binary isotherm studies demonstrated that the co-existence of MB and MO enhances their removal. Overall, the modification of the CEFW can be tuned to remove anionic, cationic dyes or both simultaneously and synergistically. The low-cost and easy separation nominate the application of the intact CEFW for dyes removal from polluted water.

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Enhanced removal of methylene blue from wastewater by alginate/carboxymethyl cellulose-melamine sponge composite

Zeng

Tang

Qin

et al. 2023

International Journal of Biological Macromolecules

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Excellent regeneration, easy separation and high capacity of 3D chitosan–melamine sponge composites for anionic dye removal

Abstract: Many micro/nanoscale powdered adsorbents face the problems of poor reusability and difficult separation, which seriously restricts their application in effluent treatment. How to effectively solve these troubles is still a...

Cited by 6 publications

References 51 publications

Magnetically nanorized seaweed residue for the adsorption of methylene blue in aqueous solutions

Magnetically nanorized seaweed residue for the adsorption of methylene blue in aqueous solutions

Upcycling of easy separated Casuarina equisetifolia fruit waste as a biosorbent: tailoring the surface modification to enhance selective removal of cationic dye or simultaneously removal of cationic and anionic dyes

Enhanced removal of methylene blue from wastewater by alginate/carboxymethyl cellulose-melamine sponge composite

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