Graphite modified sodium alginate hydrogel composite for efficient removal of malachite green dye

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dc.contributor.authorVerma, Ankit
dc.contributor.authorThakur, Sourbh
dc.contributor.authorMamba, Gcina
dc.contributor.authorPrateek
dc.contributor.authorGupta, Raju Kumar
dc.contributor.authorThakur, Pankaj
dc.contributor.authorThakur, Vijay Kumar
dc.date.accessioned2020-03-04T09:39:48Z
dc.date.available2020-03-04T09:39:48Z
dc.date.issued2020-01-16
dc.description.abstractHerein, porous sodium alginate/graphite based hybrid hydrogel was fabricated as an effective adsorbent for organic pollutant. Sodium alginate was modified through graft polymerization of acrylic acid and subsequently loaded with graphite powder to enhance its adsorption capability. The synthesized sodium alginate cross-linked acrylic acid/graphite (NaA-cl-AAc/GP) hydrogel composite was utilized in the removal of malachite green (MG) dye from aqueous solution using batch adsorption experiments. The NaA-cl-AAc/GP hydrogel composite was characterized by infrared spectroscopy, Raman spectroscopy, thermo-gravimetric analysis, scanning electron microscopy, x-ray photoelectron spectroscopy and x-ray diffraction. Under optimized experimental conditions, a maximum adsorption capacity of 628.93 mg g−1 was attained for malachite green dye. Moreover, the adsorption process could be well described by the Langmuir isotherm model and pseudo-second-order kinetic model. The hydrogel composite also showed 91% adsorption after three consecutive cycles of dye adsorption-desorption. Therefore, the NaA-cl-AAc/GP hydrogel composite is a potentially favourable material towards dye pollution remediation owing to its better swelling rate, environment friendliness, high adsorption potential and regeneration capability.en_UK
dc.identifier.citationVerma A, Thakur S, Mamba G, et al., (2020) Graphite modified sodium alginate hydrogel composite for efficient removal of malachite green dye. International Journal of Biological Macromolecules, Volume 148 April 2020, pp. 1130-1139en_UK
dc.identifier.issn0141-8130
dc.identifier.urihttps://doi.org/10.1016/j.ijbiomac.2020.01.142
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15215
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectGraphiteen_UK
dc.subjectSodium alginateen_UK
dc.subjectMalachite greenen_UK
dc.subjectWater pollutionen_UK
dc.subjectDye removalen_UK
dc.titleGraphite modified sodium alginate hydrogel composite for efficient removal of malachite green dyeen_UK
dc.typeArticleen_UK

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