Browse > Article
http://dx.doi.org/10.7234/composres.2022.35.2.098

Preparation of PVA/Graphene Oxide/Fe3O4 Magnetic Microgels as an Effective Adsorbent for Dye Removal  

Go, Seongmoon (Department of Polymer Engineering, Graduate School, Chonnam National University)
Kim, Keunseong (Department of Polymer Engineering, Graduate School, Chonnam National University)
Wi, Eunsol (Department of Polymer Engineering, Graduate School, Chonnam National University)
Park, Rae-Su (Department of Chemical Engineering, Chosun University)
Jung, Hong-Ryun (Industry-University Cooperation Foundation, Chonnam National University)
Yun, Changhun (Department of Polymer Engineering, Graduate School, Chonnam National University)
Chang, Mincheol (Department of Polymer Engineering, Graduate School, Chonnam National University)
Publication Information
Composites Research / v.35, no.2, 2022 , pp. 98-105 More about this Journal
Abstract
In this study, polyvinyl alcohol (PVA)/graphene oxide (GO)/iron oxide (Fe3O4) magnetic microgels were prepared using a microfluidic approach and the dye adsorption capacity of the microgels was confirmed. The adsorption capacity (qe) of the gels was evaluated by varying the dye concentration, pH, and contact time with the microgels. The dyes used in this work were methylene blue (MB), crystal violet (CV), and malachite green (MG), and microgels showed the highest adsorption capacity (191.1 mg/g) in methylene blue. The microgels exhibited the highest adsorption capacity in the dye aqueous solution at pH 10 due to the presence of atomic nitrogen ions (N+) on the dye molecules. The adsorption isotherm studies revealed that the Langmuir isotherm is the best fit isotherm model for the dye adsorption on the microgels, indicative of monolayer adsorption. The kinetic analysis exhibited that the pseudo-second order model fits better than the pseudo-first order model, confirming that the adsorption process is chemisorption. In addition, the magnetic microgels showed good reusability and recovery efficiency. It was confirmed that the adsorption capacity of the gels maintains more than 70% of the initial capacity after 5 times of cycle experiments.
Keywords
Microfluidics; Magnetic Microgels; Osmotic Pressure; Dye Removal;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Gil, T.H., Lee, W.H., and Ahn, J.-H., "Adsorption of Methylene Blue from Aqueous Solution by Pumpkin-Seed Residue," Korean Society of Environmental Engineers, Vol. 42, No. 1, 2020, pp. 10-18.   DOI
2 Cho, S., "Fabrication of Functional Microcapsules Using Microfluidic Approach and Their Application to Heavy Metal Ions Adsorption," MS Thesis, Chonnam National University, KR, 2021.
3 Cho, S., Kim, J.H., Yang, K.S., and Chang, M., "Facile Preparation of Amino-functionalized Polymeric Microcapsules as Efficient Adsorbent for Heavy Metal Ions Removal," Chemical Engineering Journal, Vol. 425, 2021, pp. 130645.   DOI
4 Wang, N., Chang, P.R., Zheng, P., and Ma, X., "Graphene-poly (vinyl alcohol) Composites: Fabrication, Adsorption and Electrochemical Properties," Applied Surface Science, Vol. 314, 2014, pp. 815-821.   DOI
5 Katheresan, V., Kansedo, J., and Lau, S.Y., "Efficiency of Various Recent Wastewater Dye Removal Methods: A Review," Journal of Environmental Chemical Engineering, Vol. 6, No. 4, 2018, pp. 4676-4697.   DOI
6 Lee, J.J., "Isotherm, Kinetic, Thermodynamic and Competitive for Adsorption of Brilliant Green and Quinoline Yellow Dyes by Activated Carbon," Korean Chemical Engineering Research, Vol. 59, No. 4, 2021, pp. 565-573.   DOI
7 Hussain, S., Kamran, M., Khan, S.A., Shaheen, K., Shah, Z., Suo, H., Khan, Q., Shah, A.B., Rehman, W.U., Al-Ghamdi, Y.O., and Ghani, U., "Adsorption, Kinetics and Thermodynamics Studies of Methyl Orange Dye Sequestration Through Chitosan Composites Films", International Journal of Biological Macromolecules, Vol. 168, 2021, pp. 383-394.   DOI
8 Mani, S.K., and Bhandari, R., "Microwave-assisted Synthesis of Self-assembled Network of Graphene Oxide-Polyethylenimine-Polyvinyl Alcohol Hydrogel Beads for Removal of Cationic and Anionic Dyes from Wastewater," Journal of Molecular Liquids, Vol. 345, 2022, pp. 117809.   DOI
9 Lee, J.J., "Characteristics of Isotherm, Kinetic and Thermodynamic Parameters for the Adsorption of Acid Red 66 by Activated Carbon," Clean Technology, Vol. 26, No. 1, 2020, pp. 30-38.   DOI
10 Han, M., Xu, B., Zhang, M., Yao, J., Li, Q., Chen, W., and Zhou, W., "Preparation of Biologically Reduced Graphene Oxidebased Aerogel and Its Application in Dye Adsorption," Science of the Total Environment, Vol. 783, 2021, 147028.   DOI
11 Sun, L., Wang, J., Yu, Y., Bian, F., Zou, M., and Zhao, Y., "Graphene Oxide Hydrogel Particles from Microfluidics for Oil Decontamination," Journal of Colloid and Interface Science, Vol. 528, 2018, pp. 372-378.   DOI
12 Chang, Z., Chen, Y., Tang, S., Yang, J., Chen, Y., Chen, S., Li, P., and Yang, Z., "Construction of Chitosan/polyacrylate/graphene Oxide Composite Physical Hydrogel by Semi-dissolution/acidification/sol-gel Transition Method and Its Simultaneous Cationic and Anionic Dye Adsorption Properties," Carbohydrate polymers, Vol. 229, 2020, pp. 115431.   DOI
13 Mittal, H., Al Alili, A., Morajkar, P.P., and Alhassan, S.M., "Graphene Oxide Crosslinked Hydrogel Nanocomposites of Xanthan Gum for the Adsorption of Crystal Violet Dye," Journal of Molecular Liquids, Vol. 323, 2021, pp. 115034.   DOI
14 Choi, Y.H., Lee, S.S., Lee, D.M., Jeong, H.S., and Kim, S.H., "Composite Microgels Created by Complexation between Polyvinyl Alcohol and Graphene Oxide in Compressed Double-Emulsion Drops," Small, Vol. 16, No. 9, 2020, pp. 1903812.   DOI
15 Guo, H., Jiao, T., Zhang, Q., Guo, W., Peng, Q., and Yan, X. "Preparation of Graphene Oxide-based Hydrogels as Efficient Dye Adsorbents for Wastewater Treatment," Nanoscale Research Letters, Vol. 10, No. 1, 2015, pp. 1-10.   DOI
16 Cheng, Z., Liao, J., He, B., Zhang, F., Zhang, F., Huang, X., and Zhou, L., "One-step Fabrication of Graphene Oxide Enhanced Magnetic Composite Gel for Highly Efficient Dye Adsorption and Catalysis," ACS Sustainable Chemistry & Engineering, Vol. 3, No. 7, 2015, pp. 1677-1685.   DOI