Rodyti trumpą aprašą

dc.rights.licenseKūrybinių bendrijų licencija / Creative Commons licenceen_US
dc.contributor.authorSeniūnaitė, Jurgita
dc.contributor.authorVaiškūnaitė, Rasa
dc.contributor.authorBazienė, Kristina
dc.date.accessioned2024-08-14T08:25:52Z
dc.date.available2024-08-14T08:25:52Z
dc.date.issued2017
dc.identifier.issn2029-7092en_US
dc.identifier.urihttps://etalpykla.vilniustech.lt/handle/123456789/154728
dc.description.abstractResearch studies on the adsorption kinetics are conducted in order to determine the absorption time of heavy metals on coffee grounds from liquid. The models of adsorption kinetics and adsorption diffusion are based on mathematical models (Cho et al. 2005). The adsorption kinetics can provide information on the mechanisms occurring be tween adsorbates and adsorbents and give an understanding of the adsorption process. In the mathematical modelling of processes, Lagergren’s pseudo-first and pseudo-second-order kinetics and the intraparticle diffusion models are usually applied. The mathematical modelling has shown that the kinetics of the adsorption process of heavy metals (copper (Cu) and lead (Pb)) is more appropriately described by the Lagergren’s pseudo-second-order kinetic model. The kinetic constants (k2Cu = 0.117; k2Pb = 0,037 min−1) and the sorption process speed (k2qeCu = 0.0058–0.4975; k2qePb = 0.021–0.1661 mg/g per min) were calculated. After completing the mathematical modelling it was calculated that the Langmuir isotherm better reflects the sorption processes of copper (Cu) (R2 = 0.950), whilst the Freundlich isotherm – the sorption processes of lead (Pb) (R2 = 0.925). The difference between the mathematically modelled and experimentally obtained sorption capacities for removal of heavy metals on coffee grounds from aqueous solutions is 0.0590.164 mg/l for copper and 0.004–0.285 mg/l for lead. Residual concentrations of metals in a solution showed difference of 1.01 and 0.96 mg/l, respectively.en_US
dc.format.extent8 p.en_US
dc.format.mediumTekstas / Texten_US
dc.language.isoenen_US
dc.relation.urihttps://etalpykla.vilniustech.lt/handle/123456789/154497en_US
dc.rightsAttribution-NonCommercial 4.0 Internationalen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en_US
dc.source.urihttp://enviro.vgtu.lt/index.php/enviro/2017/paper/view/543en_US
dc.subjectmathematical modellingen_US
dc.subjectcoffee groundsen_US
dc.subjectadsorptionen_US
dc.subjectcopperen_US
dc.subjectleaden_US
dc.subjectheavy metalsen_US
dc.titleMathematical modelling for copper and lead adsorption on coffee groundsen_US
dc.typeKonferencijos publikacija / Conference paperen_US
dcterms.accessRightsLaisvai prieinamas / Openly availableen_US
dcterms.alternativeEnvironmental protectionen_US
dcterms.issued2017-04-28
dcterms.licenseCC BY NCen_US
dcterms.references9en_US
dc.description.versionTaip / Yesen_US
dc.contributor.institutionVilniaus Gedimino technikos universitetasen_US
dc.contributor.institutionVilnius Gediminas Technical Universityen_US
dc.contributor.facultyAplinkos inžinerijos fakultetas / Faculty of Environmental Engineeringen_US
dc.contributor.departmentAplinkos apsaugos katedra / Department of Environmental Protectionen_US
dcterms.sourcetitle10th International Conference “Environmental Engineering” (ICEE-2017)en_US
dc.identifier.eisbn9786094760440en_US
dc.identifier.eissn2029-7092en_US
dc.publisher.nameVilnius Gediminas Technical Universityen_US
dc.publisher.nameVilniaus Gedimino technikos universitetasen_US
dc.publisher.countryLithuaniaen_US
dc.publisher.countryLietuvaen_US
dc.publisher.cityVilniusen_US
dc.identifier.doihttps://doi.org/10.3846/enviro.2017.007en_US


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