Graphene oxide MgFe2O4 nanocomposites for Cr(VI) remediation: a comparative modeling study
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The article describes the synthesis and application of magnesium ferrite nanoparticles (MgFe2O4 NPs) and engineered MgFe2O4 nanocomposites (NCs) by graphene oxide as green and easy separable magnetic adsorbents in removal of Cr(VI) from environmental pollutant. The statistical study of the adsorption process and optimization was accomplished with central composite design method of response surface methodology (RSM) approach. The optimum conditions, predicted by RSM, were achieved at pH, contact time, initial Cr(VI) concentration and adsorbent dosage of 2, 60 min, 40 mg L−1 and 0.15 g, respectively. The removal of Cr(VI) under optimum situations was 97%, and the achieved result in practice was found to be 99%. Pareto analysis suggests the importance relative order of the factors as: pH > concentration of Cr(VI) > time > adsorbent dosage under optimized situations. The engineered nanocomposite was further analyzed for real groundwater samples, and 92% Cr(VI) remediation was resulted. The study is the first study for efficient Cr(VI) remediation from real groundwater sample using novel engineered nanocomposites and has potential to have societal as well as industrial impact in the form of process or product development.
KeywordsNano magnetic adsorption Cr(VI) pollutant Real samples Response surface design Novel nanocomposite
Especial thanks to Iranian Nanotechnology Initiative Council for the encouraging support. SR and ND are acknowledging Director, Indian Institute of Food Processing Technology, for constant encouragement and support.
- 24.Omer MIM, Elbadawi AA, Yassin OA (2013) Synthesis and structural properties of MgFe2O4 ferrite nano-particles. J Appl Ind Sci 1:20–23Google Scholar
- 25.Dasgupta N, Ranjan S, Chakraborty AR, Ramalingam C, Shanker R, Kumar A (2016) Nanoagriculture and water quality management. Nanosci Food Agric 1(1):1–18Google Scholar
- 27.Saleh AA, Gupta VK (2016) Nanomaterial and polymer membranes, synthesis, characterization, and applications, 1st edn. Netherland, ElsevierGoogle Scholar
- 28.Saleh A A (217) Advanced nanomaterials for water engineering, treatment, and hydraulics, 1st ed., IGIGoogle Scholar
- 30.Babu Maddinedi S, Mandal BK, Patil SH, Andhalkar VV, Ranjan S, Dasgupta N (2017) Diastase induced green synthesis of bilayered reduced graphene oxide and its decoration with gold nanoparticles. J Photochem Photobiol B Biol 166:252–258. https://doi.org/10.1016/j.jphotobiol.2016.12.008 CrossRefGoogle Scholar
- 42.Adinarayana K, Ellaiah P (2002) Response surface optimization of the critical medium components for the production of alkaline protease by a newly isolated Bacillus sp. J Pharm Pharm Sci 5:272–278Google Scholar
- 52.Khare P, Yadav A, Ramkumar J, Verma N (2016) Microchannel-embedded metal-carbon-polymer nanocomposite as a novel support for chitosan for efficient removal of hexavalent chromium from water under dynamic conditions. Chem Eng J 293:44–54. https://doi.org/10.1016/j.cej.2016.02.049 CrossRefGoogle Scholar
- 55.Chávez-Guajardo AE, Medina-Llamas JC, Maqueira L, Andrade CAS, Alves KGB, de Melo CP (2015) Efficient removal of Cr(VI) and Cu(II) ions from aqueous media by use of polypyrrole/maghemite and polyaniline/maghemite magnetic nanocomposites. Chem Eng J 281:826–836. https://doi.org/10.1016/j.cej.2015.07.008 CrossRefGoogle Scholar