Modelling, analysis and optimization of adsorption parameters for H3PO4 activated rubber wood sawdust using response surface methodology (RSM)

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dc.contributor.authorHelen Kalavathy, M.H.
dc.contributor.authorIyyaswami, I.
dc.contributor.authorGanesapillai, M.G.
dc.contributor.authorMiranda, L.R.
dc.date.accessioned2026-02-05T09:36:42Z
dc.date.issued2009
dc.description.abstractAdsorption capacity of Cu2+ from aqueous solution onto H<inf>3</inf>PO<inf>4</inf> activated carbon using rubber wood sawdust (RSAC) was investigated in a batch system. Kinetic and isotherm studies were carried out, the thermodynamic parameters like standard Gibb's free energy (?G°), enthalpy (?H°) and entropy (?S°) were evaluated. The pseudo-second-order model was found to explain the kinetics of Cu2+ adsorption most effectively. The process optimization was performed through Central Composite Rotary Design using response surface methodology (RSM) by Design Expert Version 5.0.7 (STAT-EASE Inc., Minneapolis, USA). An initial concentration of 35 mg L-1, temperature of 26 °C, carbon loading of 0.45 g (100 mL)-1, adsorption time 208 min and pH of 6.5 was found to be the optimum conditions for the maximum uptake of copper ions of 5.6 mg g-1 in batch mode. © 2009 Elsevier B.V. All rights reserved.
dc.identifier.citationColloids and Surfaces B: Biointerfaces, 2009, 70, 1, pp. 35-45
dc.identifier.issn9277765
dc.identifier.urihttps://doi.org/10.1016/j.colsurfb.2008.12.007
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/27644
dc.subjectAdsorption capacities
dc.subjectAdsorption parameters
dc.subjectAdsorption time
dc.subjectAqueous solutions
dc.subjectBatch modes
dc.subjectBatch systems
dc.subjectCarbon loadings
dc.subjectCentral composite rotary designs
dc.subjectCopper ions
dc.subjectHPO activated rubber wood sawdust
dc.subjectInitial concentrations
dc.subjectMinneapolis
dc.subjectOptimum conditions
dc.subjectProcess optimizations
dc.subjectPseudo-second order models
dc.subjectResponse surface methodology
dc.subjectThermodynamic parameters
dc.subjectAdsorption
dc.subjectCopper
dc.subjectMetal ions
dc.subjectOptimization
dc.subjectRubber
dc.subjectSurface properties
dc.subjectWood
dc.subjectActivated carbon
dc.subjectcupric ion
dc.subjectphosphoric acid
dc.subjectadsorption kinetics
dc.subjectarticle
dc.subjectmathematical model
dc.subjectparameter
dc.subjectpH measurement
dc.subjectpollution control
dc.subjectpriority journal
dc.subjectresponse surface method
dc.subjectsawdust
dc.subjectthermodynamics
dc.subjectwood dust
dc.subjectHydrogen-Ion Concentration
dc.subjectIons
dc.subjectKinetics
dc.subjectModels, Theoretical
dc.subjectPhosphates
dc.subjectRegression Analysis
dc.subjectSurface Properties
dc.subjectTemperature
dc.subjectThermodynamics
dc.subjectTime Factors
dc.subjectActivated Carbon
dc.subjectWood Properties
dc.titleModelling, analysis and optimization of adsorption parameters for H3PO4 activated rubber wood sawdust using response surface methodology (RSM)

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