Adsorption of heavy metals in water by chitosan-graphene oxide composites
DOI:
https://doi.org/10.61173/5ktq4x97Keywords:
Chitosan-graphene oxide composite (CS-GO composite), Heavy metal adsorption, Synergistic effect, Wastewater treatment, Adsorption mechanismAbstract
Heavy metal pollution poses a serious threat to the ecological environment and human health. The adsorption method has become a mainstream research direction due to its high efficiency and simplicity. The CS-GO material formed by the composite of chitosan and graphene oxide overcomes the defects of single materials through a synergistic effect, significantly improving the adsorption stability and capacity. This paper focuses on CS-GO composites and proposes that static batch experiments can be used to study their adsorption performance, combined with kinetic, isotherm models and X-ray photoelectron spectroscopy to explore the action mechanism. Studies have shown that its adsorption involves multiple mechanisms such as electrostatic interaction, surface complexation, pore filling and ion exchange, and it has a high adsorption capacity for heavy metals such as Pb²⁺, Cd²⁺ and Cu²⁺, with the synergistic effect enhancing selectivity and stability.This composite material shows application value in fields such as industrial wastewater treatment and drinking water purification, but it faces challenges such as high cost of large-scale preparation, poor adaptability to actual wastewater and insufficient long-term stability. Future research should focus on low-cost preparation, pilot-scale verification and the development of long-term regeneration technologies to promote its transformation from laboratory research to engineering applications.
References
[1] Saha, S., Dhara, K., Chukwuka, A. V., Pal, P., Saha, N. C., & Faggio, C. (2023). Sub-lethal acute effects of environmental Dean&Francis ISSN 2959-6157 concentrations of inorganic mercury on hematological and biochemical parameters in walking catfish, Clarias batrachus. Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 264, 109511. https://doi.org/10.1016/ j.cbpc.2022.109511
[2] Stohs, S. J., & Bagchi, D. (1995). Oxidative mechanisms in the toxicity of metal ions. Free Radical Biology & Medicine, 18(2), 321–336. https://doi.org/10.1016/0891-5849(94)00159-h
[3] Wang, B., Wang, Y., Zhang, J., Wang, J., Sun, Z., Wang, Y., & Li, F. (2023). ROS-induced lipid peroxidation modulates cell death outcome: Mechanisms behind apoptosis, autophagy, and ferroptosis. Archives of Toxicology, 97(5), 1439–1451. https:// doi.org/10.1007/s00204-023-03483-1
[4] Cieślik, B. M., Świerczek, L., & Konieczka, P. (2018). Analytical and legislative challenges of sewage sludge processing and management. Monatshefte für Chemie - Chemical Monthly, 149(9), 1635–1645. https://doi.org/10.1007/ s00706-018-2233-z
[5] Jasim, A. Q., & Ajjam, S. K. (2024). Removal of heavy metal ions from wastewater using ion exchange resin in a batch process with kinetic isotherm. South African Journal of Chemical Engineering, 49, 43–54. https://doi.org/10.1016/ j.sajce.2024.02.003
[6] Miyah, Y., El Messaoudi, N., Benjelloun, M., Boualam, O., Aasli, B., Graba, B., Georgin, J., Alexandre-Franco, M. F., & Knani, S. (2025). Recent advances in the heavy metals removal using ammonium molybdophosphate composites: A review. Advances in Colloid and Interface Science, 343, 103559. https:// doi.org/10.1016/j.cis.2025.103559
[7] Shakeri, A., Salehi, H., & Rastgar, M. (2017). Chitosan-based thin active layer membrane for forward osmosis desalination. Carbohydrate Polymers, 174, 658–668. https://doi.org/10.1016/ j.carbpol.2017.06.108
[8] Liang, H. J., Ma, L., & Cai, X. D. (2019). Study on the effect of high temperature stage of oxidation process on the properties of graphene . Inner Mongolia Science and Economy, (1), 109– 110, 142.
[9] Meng, W. L. (2024). Study on the construction of chitosanbased aerogel and its adsorption performance on Au(III) [Master’s thesis, Lanzhou University of Technology]. China National Knowledge Infrastructure. https://doi.org/10.27206/ d.cnki.ggsgu.2024.000884
[10] María, A. V., Humberto, C. V., & Fabio, Z. (2021). Synthesis and fabrication of films including graphene oxide functionalized with chitosan for regenerative medicine applications. Heliyon, 7(5), e07058. https://doi.org/10.1016/j.heliyon.2021.e07058
[11] Gong, Y., Yu, Y., Kang, H., Chen, X., Liu, H., Zhang, Y., Sun, Y., & Song, H. (2019). Synthesis and characterization of graphene oxide/chitosan composite aerogels with high mechanical performance. Polymers, 11(5), 777. https://doi. org/10.3390/polym11050777
[12] Yang, B., Wang, P.-B., Mu, N., Zhang, C.-H., Li, Y., & Wang, Y.-L. (2021). Graphene oxide-composited chitosan scaffold contributes to functional recovery of injured spinal cord in rats. Neural Regeneration Research, 16(9), 1829–1835. https://doi.org/10.4103/1673-5374.306095
[13] Liu, Y. C., Shan, H. M., & Zeng, C. Y. (2022). Removal effects of iron-modified graphene oxide chitosan on heavy metals. Journal of Environmental Engineering, 16(10), 3167– 3180. https://doi.org/10.12030/j.cjee.202112110
[14] Li, S. Y., Shi, D. F., Tang, Z. P., Xie, S. B., Liu, Y. J., & Ling, H. (2017). Characteristics and mechanism of U(VI) adsorption by chitosan/graphene oxide composites . Journal of Environmental Science, 37(4), 1388–1395. https://doi. org/10.13671/j.hjkxxb.2016.0538
[15] Gong, Y., Kong, Y. F., Ma, Z. Z., Wang, J. F., Tang, Z. Y., & Qiu, H. O. (2017). Preparation of graphene oxide/chitosan composite microspheres and their adsorption performance on niobium . Metallurgical Analysis, 37(8), 15–20. https://doi. org/10.13228/j.boyuan.issn1000-7571.20170131
[16] Zhao, C. R., Shan, H. M., Peng, S. X., & Zeng, C. Y. (2021). Adsorption study of Cr(VI) in water by iron-loaded graphene oxide chitosan. Water Treatment Technology, 47(4), 45–51. https://doi.org/10.16796/j.cnki.1000-3770.2021.04.009
[17] Liu, C. (2024). Preparation of chitosan-based ion-imprinted polymer and its adsorption mechanism of low concentration rare earth ions[Master’s thesis, Jiangxi University of Science and Technology]. China National Knowledge Infrastructure. https:// doi.org/10.27176/d.cnki.gnfyc.2024.001027
[18] Mo, L. J., Liu, Y., & Zhang, J. X. (2025). Research status of chitosan/graphene oxide composites . Journal of Composite Materials, 42(3), 1261–1271. https://doi.org/10.13801/j.cnki. fhclxb.20240816.001
[19] Meena, H. M., Kukreti, S., Jassal, P. S., & Singh, P. (2025). Graphene oxide/goethite-chitosan composite to optimise adsorption of arsenic (III) from contaminated aquatic solution. International Journal of Biological Macromolecules, 318(Part 2), 145110. https://doi.org/10.1016/j.ijbiomac.2025.145110
[20] Hu, B., Hu, Q., Li, X., Pan, H., Tang, X., Chen, C., & Huang, C. (2017). Rapid and highly efficient removal of Eu(III) from aqueous solutions using graphene oxide. Journal of Molecular Liquids, 229, 6–14. https://doi.org/10.1016/ j.molliq.2016.12.048
[21] Huang, W. J., Yang, Y. H., & Li, K. N. (2025). Construction of double crosslinked chitosan-based hydrogel and its efficient adsorption and regeneration mechanism of Cu 2+ /Cd2+ . Materials Science, 15(4), 864–878. https://doi.org/10.12677/ ms.2025.154091
[22] Li, L., Zhao, L., Ma, J., & Tian, Y. (2020). Preparation of graphene oxide/chitosan complex and its adsorption properties for heavy metal ions. Green Processing and Synthesis, 9(1), 294–303. https://doi.org/10.1515/gps-2020-0029
[23] Yang, X. H. (2024). Synthesis of three-dimensional graphene-based composite aerogel and its microwave absorption properties[Master’s thesis, Anhui University of Technology]. China National Knowledge Infrastructure.
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