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<p>This study aimed to develop a novel magnetic nanocomposite consisting of zeolite and cellulose nanocrystals (CNC) for the removal of the cationic dyes methylene blue (MB) and methyl violet 2B (MV-2B). The synthesized nanocomposite called m-CNC-Z, was characterized through SEM-EDS, XRD, FTIR, TGA, BET, Zeta potential, and VSM analysis. The effects of composite preparation method, m-CNC-Z amount, pH, temperature, salt presence, initial dye concentration, and contact time on dye removal were examined. Additionally, kinetic, isotherm and thermodynamic studies were conducted. <?tk 1?>The removal efficiencies of MV-2B and MB were 81.9% and 70.6% at initial concentration of 10&#xa0;mg/L, a pH of 5.9, a temperature of 20&#xa0;°C, m-CNC-Z amount of 1.5&#xa0;g/L, and 60&#xa0;min contact time. The findings revealed that the adsorption of MB and MV-2B conformed to the pseudo second order kinetic model and the Langmuir isotherm model. Thermodynamic evaluations showed that the adsorption processes for both dyes were exothermic and spontaneous. Moreover, the adsorption performance in a binary dye solution was also explored.</p>

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Removal of Cationic Dyes Methyl Violet 2B and Methylene Blue Using a Magnetic Zeolite-Cellulose Nanocrystal Nanocomposite: A Study on Single and Binary Dye Systems

  • 期刊论文

  • 发表日期：

    2025年4月29日

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摘要

This study aimed to develop a novel magnetic nanocomposite consisting of zeolite and cellulose nanocrystals (CNC) for the removal of the cationic dyes methylene blue (MB) and methyl violet 2B (MV-2B). The synthesized nanocomposite called m-CNC-Z, was characterized through SEM-EDS, XRD, FTIR, TGA, BET, Zeta potential, and VSM analysis. The effects of composite preparation method, m-CNC-Z amount, pH, temperature, salt presence, initial dye concentration, and contact time on dye removal were examined. Additionally, kinetic, isotherm and thermodynamic studies were conducted. The removal efficiencies of MV-2B and MB were 81.9% and 70.6% at initial concentration of 10 mg/L, a pH of 5.9, a temperature of 20 °C, m-CNC-Z amount of 1.5 g/L, and 60 min contact time. The findings revealed that the adsorption of MB and MV-2B conformed to the pseudo second order kinetic model and the Langmuir isotherm model. Thermodynamic evaluations showed that the adsorption processes for both dyes were exothermic and spontaneous. Moreover, the adsorption performance in a binary dye solution was also explored.