Author:
Hassan Mohammed G.,Wassel Magdy A.,Gomaa Hosni A.,Elfeky Ahmed S.
Abstract
AbstractHerein, 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 m2/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 (R2 ≥ 0.99). Also, the adsorption of RB matched with pseudo-second order model, t0.5 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.
Publisher
Springer Science and Business Media LLC
Reference47 articles.
1. Luo, Z. et al. Lead bismuth oxybromide/graphene oxide: Novel insights into the adsorption of organic contaminants by biochar: A review. Chemosphere 287, 132959 (2022).
2. Zhao, X., Chen, H. & Kong, F. Fabrication, characteristics and applications of carbon materials with different morphologies and porous structures produced from wood liquefaction: A review. Chem. Eng. J. 364, 226–243 (2019).
3. Sharma, S. et al. Adsorption of cationic dyes onto carrageenan and itaconic acid-based superabsorbent hydrogel: Synthesis, characterization and isotherm analysis. J. Hazard. Mater. 421, 126729 (2022).
4. Deng, S. et al. An anionic nanotubular metal-organic framework for high-capacity dye adsorption and dye degradation in darkness. Inorg. Chem. 58(20), 13979–13987 (2019).
5. Farraji, H., Robinson, B., Mohajeri, P. & Abedi, T. Phytoremediation: Green technology for improving aquatic and terrestrial environments. Nippon. J. Environ. Sci. 1, 1–30 (2020).