Polypyrrole functionalized Cobalt oxide Graphene (COPYGO) nanocomposite for the efficient removal of dyes and heavy metal pollutants from aqueous effluents

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dc.contributor.authorAnuma, S.
dc.contributor.authorMishra, P.
dc.contributor.authorBadekai Ramachandra, B.R.
dc.date.accessioned2026-02-05T09:26:53Z
dc.date.issued2021
dc.description.abstractA cobalt oxide graphene nanocomposite functionalized with polypyrrole (COPYGO) having a heterogenous porous structure was synthesized using hydrothermal method. Microscopic imaging of the COPYGO surface revealed its highly porous and ordered features. The adsorption performance of the COPYGO composite was systemically investigated for Methylene Blue (MB), Congo red (CR) dyes and toxic lead (Pb(II)) and Cadmium (Cd(II)) metals. These were selected as they are the common pollutants in industrial wastewater. The COPYGO was found to be thermally stable up to 195 oC with a specific surface area of 133 m2 g?1. Experimental data indicates that the COPYGO follows Langmuir and Temkin adsorption isotherm. The COPYGO was efficient in removing MB (92.8%), CR (92.2%), Pb(II) (93.08%) and Cd(II) (95.28%) pollutants at pH 7.2, 5.0, 5.5 and 6.1 respectively from the simulated effluents. The maximum adsorption capacity (Q<inf>max</inf>) observed for MB 663.018 mg g-1, CR 659.056 mg g-1, Pb(II) 780.363 mg g?1 and Cd(II) 794.188 mg g?1 pollutants. The thermodynamic analysis of the COPYGO indicates that the adsorption is endothermic and spontaneous in nature. COPYGO showed very high efficient removal rate for the pollutants in simulated effluents which guaranteed its benefits and efficacy in industrial wastewater treatment. © 2021 Elsevier B.V.
dc.identifier.citationJournal of Hazardous Materials, 2021, 416, , pp. -
dc.identifier.issn3043894
dc.identifier.urihttps://doi.org/10.1016/j.jhazmat.2021.125929
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/23129
dc.publisherElsevier B.V.
dc.subjectAdsorption
dc.subjectAromatic compounds
dc.subjectAzo dyes
dc.subjectCadmium compounds
dc.subjectChemicals removal (water treatment)
dc.subjectCobalt compounds
dc.subjectConducting polymers
dc.subjectEffluents
dc.subjectGraphene
dc.subjectHeavy metals
dc.subjectIndustrial water treatment
dc.subjectLead compounds
dc.subjectMesoporous materials
dc.subjectPollution
dc.subjectPolypyrroles
dc.subjectReclamation
dc.subjectStripping (dyes)
dc.subjectThermoanalysis
dc.subjectWastewater treatment
dc.subjectAqueous effluent
dc.subjectCobalt oxides
dc.subjectCongo red
dc.subjectFunctionalized
dc.subjectGraphene nanocomposites
dc.subjectHeavy metal pollutants
dc.subjectIndustrial wastewater treatment
dc.subjectMesoporous
dc.subjectMethylene Blue
dc.subjectPolypyrrole conducting polymer
dc.subjectNanocomposites
dc.subjectcadmium
dc.subjectcobalt
dc.subjectcongo red
dc.subjectdye
dc.subjectgraphene oxide
dc.subjectheavy metal
dc.subjectlead
dc.subjectmethylene blue
dc.subjectnanocomposite
dc.subjectnanoparticle
dc.subjectpolymer
dc.subjectpolypyrrole
dc.subjectcobalt oxide
dc.subjectcoloring agent
dc.subjectgraphite
dc.subjectoxide
dc.subjectpyrrole derivative
dc.subjectadsorption
dc.subjecteffluent
dc.subjectexperimental study
dc.subjectindustrial waste
dc.subjectoxide group
dc.subjectperformance assessment
dc.subjectpollutant removal
dc.subjectsurface area
dc.subjectthermodynamics
dc.subjectwastewater treatment
dc.subjectadsorption kinetics
dc.subjectArticle
dc.subjectchemical analysis
dc.subjectcontrolled study
dc.subjectisotherm
dc.subjectpH
dc.subjectthermostability
dc.subjectwaste water management
dc.subjectwaste water recycling
dc.subjectwater pollutant
dc.subjectkinetics
dc.subjectpollutant
dc.subjectCobalt
dc.subjectColoring Agents
dc.subjectEnvironmental Pollutants
dc.subjectGraphite
dc.subjectKinetics
dc.subjectMetals, Heavy
dc.subjectOxides
dc.subjectPolymers
dc.subjectPyrroles
dc.subjectWater Pollutants, Chemical
dc.titlePolypyrrole functionalized Cobalt oxide Graphene (COPYGO) nanocomposite for the efficient removal of dyes and heavy metal pollutants from aqueous effluents

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