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dc.contributor.authorBaltrėnaitė-Gedienė, Edita
dc.contributor.authorUsevičiūtė, Luiza
dc.contributor.authorTitova, Jelena
dc.contributor.authorMarčiulaitienė, Eglė
dc.date.accessioned2023-09-18T16:09:02Z
dc.date.available2023-09-18T16:09:02Z
dc.date.issued2021
dc.identifier.issn0733-9372
dc.identifier.urihttps://etalpykla.vilniustech.lt/handle/123456789/111831
dc.description.abstractThis study evaluates the adsorption capacity of syngenetically modified lignin-derived biochar for chalcophile (zinc, Zn), siderophile (copper, Cu) and lithophile (manganese, Mn) ions in single- and multicomponent solutions. Lignin, biochar feedstock, was chosen for the research. Lignin was pyrolyzed at 450°C for 2 h. The experiments studied how adsorption depends on adsorbent dose (0.10–0.30  g), pH (2–10), contact time (5–180  min), temperature (25°C–45°C), and initial concentrations of elements in solution (25–150  mg/L). The impact of contact time was also investigated using breakthrough curves. The adsorption of multicomponent, potentially toxic elements by lignin-derived biochar was lower than the adsorption for single-component, potentially toxic elements. In all cases, Cu(II) had the highest adsorption efficiency and capacity. The adsorption processes of Cu(II) were also the most spontaneous and thermodynamically favored. The ΔG° values of these processes were almost always negative and much lower than those during the adsorption of the other elements studied. The adsorption process in single-component and multicomponent Zn(II) and Cu(II) solutions and in the multicomponent Mn(II) solution was endothermic and physical in nature. The adsorption of elements in the single-component Cu(II) solution and the single-component Zn(II) solution by lignin-derived biochar was more in line with the pseudo-second order equation model (R2=0.8697 and R2=0.5359, respectively). The experimental data was modelled by various isotherm models. The results revealed that adsorption isotherm in the case of single-component Zn(II) was more in conformity with the Langmuir isotherm (R2=0.79), suggesting the dominant adsorption of lignin biochar was via monolayer adsorption. Meanwhile, the adsorption isotherm in the case of single-component Mn(II) was well fitted to the Freundlich adsorption model (R2=0.79), indicating adsorption was multilayer in nature.eng
dc.formatPDF
dc.format.extentp. 1-18
dc.format.mediumtekstas / txt
dc.language.isoeng
dc.relation.isreferencedbyScience Citation Index Expanded (Web of Science)
dc.relation.isreferencedbyScopus
dc.rightsNeprieinamas
dc.source.urihttps://ascelibrary.org/doi/pdf/10.1061/%28ASCE%29EE.1943-7870.0001917
dc.source.urihttps://talpykla.elaba.lt/elaba-fedora/objects/elaba:105830295/datastreams/MAIN/content
dc.titleAdsorption of chalcophile, siderophile, and lithophile elements from aqueous solutions using syngenetically modified biochar
dc.typeStraipsnis Web of Science DB / Article in Web of Science DB
dcterms.references98
dc.type.pubtypeS1 - Straipsnis Web of Science DB / Web of Science DB article
dc.contributor.institutionVilniaus Gedimino technikos universitetas
dc.contributor.facultyAplinkos inžinerijos fakultetas / Faculty of Environmental Engineering
dc.contributor.departmentAplinkos apsaugos institutas / Research Institute of Environmental Protection
dc.subject.researchfieldT 004 - Aplinkos inžinerija / Environmental engineering
dc.subject.vgtuprioritizedfieldsAE0202 - Aplinkos apsaugos technologijos / Environmental protection technologies
dc.subject.ltspecializationsL102 - Energetika ir tvari aplinka / Energy and a sustainable environment
dc.subject.enbiochar
dc.subject.enadsorption
dc.subject.ensyngenetic elements
dcterms.sourcetitleJournal of environmental engineering
dc.description.issueiss. 12
dc.description.volumevol. 147
dc.publisher.nameAmerican Society of Civil Engineers
dc.publisher.cityReston
dc.identifier.doi10.1061/(ASCE)EE.1943-7870.0001917
dc.identifier.elaba105830295
dc.identifier.wos000708122700001


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