Removal of Pb^(2+) Ions from Aqueous Solutions by Modified Magnetic Graphene Oxide: Adsorption Isotherms and Kinetics Studies

Document Type : Original Article


1 Department of Chemical Engineering, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran

2 Department of Chemistry, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran


Graphene oxide based nano-composites have attracted huge attention for wastewater treatment specially removal of heavy metals. This paper reports adsorption of  onto modified magnetic graphene oxide with chitosan and cysteine (GO/ /Chi/Cys). To study the adsorbent morphology, Field Emission Scanning Electron Microscope (FE-SEM) and Fourier Transform Infrared Spectrometer (FTIR) were used in different stages of surface modification. In order to reveal the nature of sorption process, linear forms of different adsorption isotherms such as Langmuir, Freundlich, Tempkin, and Dubinin–Radushkevich were studied. Experimental data were fitted well by Langmuir model with a maximum monolayer coverage capacity ( ) of 86.21 . Prediction of  from Langmuir model was in good agreement with maximum empirical adsorption capacity ( =85.4 ). Various types of kinetic models such as pseudo-first-order, pseudo-second-order, Elovich, and intra particle diffusion were investigated to determine characteristic parameters in the adsorption process. The kinetic studies showed that pseudo-second-order model represents the adsorption process better than others due to its high correlation coefficient ( =0.9996). Therefore, the adsorption process is chemisorption.


1.   Shan, R., Shi, Y., Gu, J., Wang, Y. & Yuan, H., 2020. Single and Competitive Adsorption Affinity of Heavy Metals toward Peanut Shell-Derived Biochar and Its Mechanisms in Aqueous Systems. Chinese Journal of Chemical Engineering, 28(5): 1375-1383.
2.   Wang, J. & Chen, C., 2006. Biosorption of Heavy Metals by Saccharomyces Cerevisiae: A Review. Biotechnology advances, 24(5): 427-451.
3.   Chen, C., Chen, Q., Kang, J., Shen, J., Wang, B., Guo, F. & Chen, Z., 2020. Hydrophilic Triazine-Based Dendron for Copper and Lead Adsorption in Aqueous Systems: Performance and Mechanism. Journal of Molecular Liquids, 298112031.
4.   Khazaei, M., Nasseri, S., Ganjali, M. R., Khoobi, M., Nabizadeh, R., Gholibegloo, E. & Nazmara, S., 2018. Selective Removal of Lead Ions from Aqueous Solutions Using 1, 8-Dihydroxyanthraquinone (Dhaq) Functionalized Graphene Oxide; Isotherm, Kinetic and Thermodynamic Studies. RSC advances, 8(11): 5685-5694.
5.   Davarnejad, R., Pishdad, R. & Sepahvand, S., 2018. Dye Adsorption on the Blends of Saffron Petals Powder with Activated Carbon: Response Surface Methodology. International Journal of Engineering, 31(12): 2001-2008.
6.   Kumari, U., Siddiqi, H., Bal, M. & Meikap, B., 2020. Calcium and Zirconium Modified Acid Activated Alumina for Adsorptive Removal of Fluoride: Performance Evaluation, Kinetics, Isotherm, Characterization and Industrial Wastewater Treatment. Advanced Powder Technology, 31(5): 2045-2060.
7.   Biswas, S., Islam, M. M., Hasan, M., Rimu, S., Khan, M., Haque, P. & Rahman, M., 2018. Evaluation of Cr (Vi) Ion Removal from Aqueous Solution by Bio-Inspired Chitosan-Clay Composite: Kinetics and Isotherms. Iranian Journal of Chemical Engineering, 15(4): 63-80.
8.   Chenab, K. K., Sohrabi, B., Jafari, A. & Ramakrishna, S., 2020. Water Treatment: Functional Nanomaterials and Applications from Adsorption to Photodegradation. Materials Today Chemistry, 16: 100262.
9.   Dąbrowski, A., 2001. Adsorption—from Theory to Practice. Advances in colloid interface science, 93(1-3): 135-224.
10. Zhang, X., Yan, L., Li, J. & Yu, H., 2020. Adsorption of Heavy Metals by L-Cysteine Intercalated Layered Double Hydroxide: Kinetic, Isothermal and Mechanistic Studies. Journal of Colloid and Interface Science, 562: 149-158.
11. Shafiee, M., Akbari, A. & Ghiassimehr, B., 2018. Removal of Pb (Ii) from Wastewater Using Henna; Optimization of Operational Conditions. Iranian Journal of Chemical Engineering, 15(4): 17-26.
12. Tohfegar, E., Moghaddas, J., Sharifzadeh, E. & Esmaeilzadeh-Dilmaghani, S., 2019. Synthesis and Characterization of Waterglass-Based Silica Aerogel under Heat Treatment for Adsorption of Nitrate from Water: Batch and Column Studies. Iranian Journal of Chemical Engineering, 16(4): 53-72.
13. Shojaei, Z., Iravani, E., Moosavian, M. & Torab, M. M., 2016. Removal of Cerium from Aqueous Solutions by Amino Phosphate Modified Nano Tio2: Kinetic, and Equilibrium Studies. Iranian journal of chemical engineering, 13(2): 3-21.
14. El-Reash, A. & Gaber, Y., 2016. Magnetic Chitosan Modified with Cysteine-Glutaraldehyde as Adsorbent for Removal of Heavy Metals from Water. Journal of Environmental Chemical Engineering, 4(4): 3835-3847.
15. Lashkenari, M., KhazaiePoul, A., Ghasemi, S. & Ghorbani, M., 2018. Adaptive Neuro-Fuzzy Inference System Prediction of Zn Metal Ions Adsorption by Γ-Fe2o3/Polyrhodanine Nanocomposite in a Fixed Bed Column. International Journal of Engineering, 31(10): 1617-1623.
16. Zhang, M., Cui, J., Lu, T., Tang, G., Wu, S., Ma, W. & Huang, C., 2020. Robust, Functionalized Reduced Graphene-Based Nanofibrous Membrane for Contaminated Water Purification. Chemical Engineering Journal, 404: 126347.
17. Shao, G., Lu, Y., Wu, F., Yang, C., Zeng, F. & Wu, Q., 2012. Graphene Oxide: The Mechanisms of Oxidation and Exfoliation. Journal of materials science, 47(10): 4400-4409.
18. Zhang, N., Qi, W., Huang, L., Jiang, E., Bao, J., Zhang, X., An, B. & He, G., 2019. Review on Structural Control and Modification of Graphene Oxide-Based Membranes in Water Treatment: From Separation Performance to Robust Operation. Chinese Journal of Chemical Engineering, 27(6): 1348-1360.
19. Oyedotun, K. O., Masikhwa, T. M., Lindberg, S., Matic, A., Johansson, P. & Manyala, N., 2019. Comparison of Ionic Liquid Electrolyte to Aqueous Electrolytes on Carbon Nanofibres Supercapacitor Electrode Derived from Oxygen-Functionalized Graphene. Chemical Engineering Journal, 375: 121906.
20. Qi, L. & Xu, Z., 2004. Lead Sorption from Aqueous Solutions on Chitosan Nanoparticles. Colloids and Surfaces A: Physicochemical Engineering Aspects, 251(1-3): 183-190.
21. Tripathi, S., Mehrotra, G. & Dutta, P., 2010. Preparation and Physicochemical Evaluation of Chitosan/Poly (Vinyl Alcohol)/Pectin Ternary Film for Food-Packaging Applications. Carbohydrate polymers, 79(3): 711-716.
22. Depan, D., Girase, B., Shah, J. & Misra, R., 2011. Structure–Process–Property Relationship of the Polar Graphene Oxide-Mediated Cellular Response and Stimulated Growth of Osteoblasts on Hybrid Chitosan Network Structure Nanocomposite Scaffolds. Acta biomaterialia, 7(9): 3432-3445.
23. Ramezani, G. & Honarvar, B., 2019. Thermodynamic Study of (Pb2+) Removal by Adsorption onto Modified Magnetic Graphene Oxide with Chitosan and Cysteine. Journal of Optoelectronical Nanostructures, 4(3): 73-94.
24. Al-Ghouti, M. A. & Da'ana, D. A., 2020. Guidelines for the Use and Interpretation of Adsorption Isotherm Models: A Review. Journal of Hazardous Materials, 393: 122383.
25. Garba, Z. N., 2019. The Relevance of Isotherm and Kinetic Models to Chlorophenols Adsorption: A Review. Avicenna Journal of Environmental Health Engineering, 6(1): 55-65.
26. Karimi, S., Yaraki, M. T. & Karri, R. R., 2019. A Comprehensive Review of the Adsorption Mechanisms and Factors Influencing the Adsorption Process from the Perspective of Bioethanol Dehydration. Renewable & Sustainable Energy Reviews, 107: 535-553.
27. Amar, I. A., Sharif, A., Alkhayali, M., Jabji, M., Altohami, F. & AbdulQadir, M., 2018. Adsorptive Removal of Methylene Blue Dye from Aqueous Solutions Using Cofe1. 9mo0. 1o4 Magnetic Nanoparticles. Iranian (Iranica) Journal of Energy and Environment, 9(4): 247-254.
28. Khera, R. A., Iqbal, M., Jabeen, S., Abbas, M., Nazir, A., Nisar, J., Ghaffar, A., Shar, G. A. & Tahir, M. A., 2019. Adsorption Efficiency of Pitpapra Biomass under Single and Binary Metal Systems. Surfaces and Interfaces, 14: 138-145.
29. Raman, M. & Muthuraman, G., 2017. Removal of Binary Mixture of Textile Dyes on Prosopis Juliflora Pods–Equilibrium, Kinetics and Thermodynamics Studies. Iranian Journal of Energy & Environment, 8(1): 48-55.
30. Yu, F., Wu, Y., Ma, J. & Zhang, C., 2013. Adsorption of Lead on Multi-Walled Carbon Nanotubes with Different Outer Diameters and Oxygen Contents: Kinetics, Isotherms and Thermodynamics. Journal of Environmental Sciences, 25(1): 195-203.
31. Matthews, T., Majoni, S., Nyoni, B., Naidoo, B. & Chiririwa, H., 2019. Adsorption of Lead and Copper by a Carbon Black and Sodium Bentonite Composite Material: Study on Adsorption Isotherms and Kinetics. Iranian Journal of Chemistry and Chemical Engineering, 38(1): 101-109.
32. Erhayem, M. E. & Masaaoud, M., 2019. Removal of Cadmium (Ii) from Aqueous Solutions onto Dodonaeae Viscose Leg Powder Using a Green Process: Isotherms, Kinetics and Thermodynamics. Iranian (Iranica) Journal of Energy & Environment, 10(1): 10-16.
33. Foo, K. Y. & Hameed, B. H., 2010. Insights into the Modeling of Adsorption Isotherm Systems. Chemical engineering journal, 156(1): 2-10.
34. Azari, A., Salari, M., Dehghani, M. H., Alimohammadi, M., Ghaffari, H., Sharafi, K., Shariatifar, N. & Baziar, M., 2017. Efficiency of Magnitized Graphene Oxide Nanoparticles in Removal of 2, 4-Dichlorophenol from Aqueous Solution. Journal of Mazandaran University of Medical Sciences, 26(144): 265-281.
35. Ogbozige, F. & Toko, M., 2020. Adsorption Isotherms and Kinetics of Lead and Cadmium Ions: Comparative Studies Using Modified Melon (Citrullus Colocynthis) Husk. Iranian (Iranica) Journal of Energy & Environment, 11(2): 157-162.
36. Pandey, S., Singh, N., Shukla, S. & Tiwari, M., 2017. Removal of Lead and Copper from Textile Wastewater Using Egg Shells. Iranian (Iranica) Journal of Energy & Environment, 8(3): 202-209.
37. Fierro, V., Torné-Fernández, V., Montané, D. & Celzard, A., 2008. Adsorption of Phenol onto Activated Carbons Having Different Textural and Surface Properties. Microporous mesoporous materials, 111(1-3): 276-284.
38. Cao, W., Dang, Z. & Lu, G.-N., 2013. Kinetics and Mechanism of Cr (Vi) Sorption from Aqueous Solution on a Modified Lignocellulosic Material. Environmental Engineering Science, 30(11): 672-680.