Adsorption Kinetics and Isotherms of Cu(II) and Fe(II) Ions from Aqueous Solutions by Fly Ash-Based Geopolymer
Aprilina Purbasari, Dessy Ariyanti, Siswo Sumardiono, K Khairunnisa, Tyaga Sidharta
Abstract
This paper describes the adsorption of Cu2+ and Fe2+ ions, common heavy metals found in industrial wastewater, by a fly ash-based geopolymer in batch adsorption experiments. Kinetics studies showed that the adsorption of each ion followed a pseudo-second order reaction. Moreover, adsorption isotherm of Cu2+ and Fe2+ ions followed the Langmuir model. Monolayer adsorption capacities were approximately 53.76 mg/g for Cu2+ ion and 52.63 mg/g for Fe2+ ion, respectively.
Topics & Concepts
AdsorptionFly ashAqueous solutionGeopolymerKineticsLangmuir adsorption modelChemistryMonolayerIonLangmuirInorganic chemistryIndustrial wastewater treatmentWastewaterNuclear chemistryEnvironmental engineeringPhysical chemistryOrganic chemistryEnvironmental scienceQuantum mechanicsBiochemistryPhysicsConcrete and Cement Materials ResearchClay minerals and soil interactionsRecycling and utilization of industrial and municipal waste in materials production