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image of Chemically Modified Banana Stem Adsorbent for Adsorption of Reactive Orange 16 from Aqueous Solutions

Abstract

Introduction

Anionic azo dye contamination poses environmental hazards. This study investigated surfactant-modified banana stem (SMBS) as an adsorbent for the removal of Reactive Orange 16 (RO16), with RO16 serving as a model for anionic azo dyes.

Methods

SMBS was prepared NaOH mercerization and CTAB modification for enhanced porosity/surface charge. FTIR and SEM confirmed functionalization, showing morphological changes and an increase in positive surface charge (pH 5.48 to 6.8). Kinetics, isotherms, desorption, and real-world application studies were evaluated.

Results

The adsorption kinetics best fit the pseudo-second-order model. Isotherms fit the Freundlich model, suggesting multilayer adsorption. Maximum RO16 removal (19.83 mg/g, 98%) occurred at pH 3 electrostatic attraction. Minimal dye leaching (1.25-4.02%) was observed with 95% removal efficiency maintained in lake water.

Discussion

SMBS demonstrated high efficacy and viability as an eco-friendly adsorbent from agricultural waste for industrial wastewater treatment. Strong pH dependence and minimal desorption suggest robust electrostatic binding, confirming enhanced adsorption properties.

Conclusion

This study highlights SMBS's significant potential as an efficient RO16 adsorbent, offering a promising alternative for treating industrial wastewater using agricultural waste.

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2025-08-29
2025-11-16

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Chemically Modified Banana Stem Adsorbent for Adsorption of Reactive Orange 16 from Aqueous Solutions
Bentham Science Publishers ; https://doi.org/10.2174/0124055204399644250811120305
/content/journals/rice/10.2174/0124055204399644250811120305
/content/journals/rice/10.2174/0124055204399644250811120305
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  • Article Type:     Research Article
Keywords: surfactant-modified banana stem (SMBS) ; agricultural waste ; wastewater treatment ; anionic azo dyes ; Reactive orange 16 (RO16) ; adsorption kinetics

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