Adsorption of Rose Bengal dye from waste water onto modified biomass

Herein, adsorption of Rose Bengal dye (RB) from aqueous solution was investigated. Nano raw orange peel (OP) activated carbon (AC) coated with nano chitosan (Cs) to obtain nano chitosan/activated carbon (AC/Cs) composite which cross-linked with functionalized multi-walled carbon nanotubes (MWCNTs-CO...

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Bibliographic Details
Published in:Scientific reports 2023-09, Vol.13 (1), p.14776-14776, Article 14776
Main Authors: Hassan, Mohammed G., Wassel, Magdy A., Gomaa, Hosni A., Elfeky, Ahmed S.
Format: Article
Language:English
Subjects:
639/638
639/638/11
Acids
Activated carbon
Adsorbents
Adsorption
Agricultural pollution
Aqueous solutions
Carbon
Chitosan
Dyes
Efficiency
Humanities and Social Sciences
Morphology
multidisciplinary
Nanotechnology
Nanotubes
Particle size
Pollutants
Science
Science (multidisciplinary)
Toxicity
Wastewater
Water treatment
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Summary:Herein, adsorption of Rose Bengal dye (RB) from aqueous solution was investigated. Nano raw orange peel (OP) activated carbon (AC) coated with nano chitosan (Cs) to obtain nano chitosan/activated carbon (AC/Cs) composite which cross-linked with functionalized multi-walled carbon nanotubes (MWCNTs-COOH) to create a novel composite (AC/Cs/MWCNTs) with high surface area (1923 m 2 /g). The examined parameters such as concentration (1–7 ppm), pH (6.5–9.5) and temperature (295–323 K) were traversed. The maximum removal efficiency was at pH 6.5, increased from 70.4% for nano OP to 94.7% for AC/Cs/MWCNTs nano composite. Langmuir isotherm model was the best fitting to acquired data (R 2  ≥ 0.99). Also, the adsorption of RB matched with pseudo-second order model, t 0.5 results for pseudo-second order was 4.4672 for nano OP and 1.2813 for AC/Cs/MWCNTs at 303 K. Thermodynamic studies showed that the adsorption of RB dye is exothermic and spontaneous due to the negative value of ΔG and ΔH.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-41747-5