Adsorption of Methylene Blue, Brilliant Green and Rhodamine B from Aqueous Solution Using Collagen-g-p(AA-co-NVP)/Fe3O4@SiO2 Nanocomposite Hydrogel
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In this study, the collagen-g-poly(acrylic acid-co-N-vinylpyrrolidone)/Fe3O4@SiO2 (collagen-g-p(AA-co-NVP)/Fe3O4@SiO2) as magnetic nanocomposite hydrogel was synthesized by graft copolymerization of acrylic acid (AA) and N-vinylpyrrolidone (NVP) onto collagen in the presence of the Fe3O4@SiO2 using ammonium persulfate as a free radical initiator and bis[2-(methacryloyloxy)ethyl] phosphate as a crosslinker under ultrasound-assisted condition. The blank collagen-g-p(AA-co-NVP) hydrogel and its composite with the Fe3O4@SiO2 nanoparticles were characterized by means of FTIR, SEM-EDS, XRD, VSM and TGA methods. The effects of different parameters such as pH, dose of adsorbent and time on swelling behavior were examined. The swelling ratio of the collagen-g-p(AA-co-NVP) hydrogel increased in the presence of the Fe3O4@SiO2 nanoparticles. Adsorption behavior of magnetic nanocomposite hydrogel was investigated for the adsorption of dyes and it was found to remove about 93% for methylene blue, 96% for brilliant green and 89% for rhodamine B in 50 mg/L of dyes solutions at pH 7. Kinetic study revealed the applicability of pseudo-first-order and pseudo-second-order models for the adsorption of mentioned dyes. The adsorption isotherm was studied in 25, 35, 45 and 55 °C using Langmuir, Freundlich, Temkin and Sips models and the adsorption data were well described by Langmuir isotherm model. Negative values of ΔGº for all three dyes suggested the feasibility of dyes removal and support for spontaneous adsorption of mentioned dyes on magnetic nanocomposite hydrogel. Desorption of dyes from the dye loaded nanocomposite hydrogel was simply done in ethanol. The results indicate that the prepared magnetic nanocomposite hydrogel is an efficient adsorbent with high adsorption capacity for the aforementioned dyes.
KeywordsMagnetic nanocomposite hydrogel Ultrasound-assisted Dye adsorption Brilliant green Kinetic Isotherm
The authors sincerely appreciate the instrumental supports received from the Islamic Azad University-Karaj branch.
- 12.Mohammadinezhad A, Bagheri Marandi G, Farsadrooh M, Javadian H (2018) Synthesis of poly(acrylamide-co-itaconic acid)/MWCNTs superabsorbent hydrogel nanocomposite by ultrasound-assisted technique: Swelling behavior and Pb (II) adsorption capacity. Ultrason Sonochem 49:1–12. https://doi.org/10.1016/j.ultsonch.2017.12.028 CrossRefGoogle Scholar
- 14.Shirsath SR, Patil AP, Patil R et al (2013) Removal of Brilliant Green from wastewater using conventional and ultrasonically prepared poly(acrylic acid) hydrogel loaded with kaolin clay: a comparative study. Ultrason Sonochem 20:914–923. https://doi.org/10.1016/j.ultsonch.2012.11.010 CrossRefGoogle Scholar
- 40.Aflaki Jalali M, Dadvand Koohi A, Sheykhan M (2016) Experimental study of the removal of copper ions using hydrogels of xanthan, 2-acrylamido-2-methyl-1-propane sulfonic acid, montmorillonite: Kinetic and equilibrium study. Carbohydr Polym 142:124–132. https://doi.org/10.1016/j.carbpol.2016.01.033 CrossRefGoogle Scholar
- 45.Li K, Li Y, Zheng Z (2010) Kinetics and mechanism studies of p-nitroaniline adsorption on activated carbon fibers prepared from cotton stalk by NH4H2PO4 activation and subsequent gasification with steam. J Hazard Mater 178:553–559. https://doi.org/10.1016/j.jhazmat.2010.01.120 CrossRefGoogle Scholar
- 47.Liu C, Omer AM, Ouyang X (2018) Adsorptive removal of cationic methylene blue dye using carboxymethyl cellulose/k-carrageenan/activated montmorillonite composite beads: isotherm and kinetic studies. Int J Biol Macromol 106:823–833. https://doi.org/10.1016/j.ijbiomac.2017.08.084 CrossRefGoogle Scholar
- 49.Nethaji S, Sivasamy A, Mandal AB (2013) Adsorption isotherms, kinetics and mechanism for the adsorption of cationic and anionic dyes onto carbonaceous particles prepared from Juglans regia shell biomass. Int J Environ Sci Technol 10:231–242. https://doi.org/10.1007/s13762-012-0112-0 CrossRefGoogle Scholar
- 50.Eftekhari-Sis B, Rahimkhoei V, Akbari A, Araghi HY (2018) Cubic polyhedral oligomeric silsesquioxane nano-cross-linked hybrid hydrogels: synthesis, characterization, swelling and dye adsorption properties. React Funct Polym 128:47–57. https://doi.org/10.1016/j.reactfunctpolym.2018.05.002 CrossRefGoogle Scholar
- 54.Taghvay Nakhjiri M, Bagheri Marandi G, Kurdtabar M (2018) Effect of bis[2-(methacryloyloxy)ethyl] phosphate as a crosslinker on poly(AAm-co-AMPS)/Na-MMT hydrogel nanocomposite as potential adsorbent for dyes: kinetic, isotherm and thermodynamic study. J Polym Res 25:244–263. https://doi.org/10.1007/s10965-018-1625-0 CrossRefGoogle Scholar
- 56.Gao S, Zhang W, Zhou H, Chen D (2018) Magnetic composite Fe3O4/CeO2 for adsorption of azo dye. J Rare Earths 1–8. https://doi.org/10.1016/j.jre.2018.04.002