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dc.contributor.authorUsevičiūtė, Luiza
dc.contributor.authorBaltrėnaitė-Gedienė, Edita
dc.contributor.authorBaltrėnas, Pranas
dc.date.accessioned2023-09-18T20:44:24Z
dc.date.available2023-09-18T20:44:24Z
dc.date.issued2021
dc.identifier.issn1438-4957
dc.identifier.urihttps://etalpykla.vilniustech.lt/handle/123456789/152223
dc.description.abstractCreation of oxygen-containing functional groups on the biochar surface can highly improve its hydrophilicity and amend its behaviour in aquatic systems. Hydrogen peroxide, ozone, potassium permanganate and nitrogen acid were most usually used reagents for the surface oxidation. On the contrary, biochar activation by strong acids can be a costly process at the industrial scale and can raise environmental problems due to the disposal of activated carbon. Hence, there is a need to search for cheaper and cleaner products for the modification of biochar. For this reason, weak acids, such as solution of rhamnolipids or rainfall water solution, can be used. In this study, it was found that lower size biochar particles had higher wettability compared to larger size particles, since it was categorized as slightly hydrophobic (2.67 s). Steam of average concentration of rhamnolipid solution (20 mg/l) had the highest effect on the enhancement of biochar surface area (15.2 m2/g) and satisfactory impact on the reduction of initial hydrophobicity (4210 s). Biochar modified with increased concentration of nitric acid solution (from 65 to 20%) wettability was in accordance with the increase of surface area (from 4210 to 3907 s and from 1.27 to 4.36 m2/g).eng
dc.formatPDF
dc.format.extentp. 1838-1854
dc.format.mediumtekstas / txt
dc.language.isoeng
dc.relation.isreferencedbyScience Citation Index Expanded (Web of Science)
dc.relation.isreferencedbyScopus
dc.relation.isreferencedbySpringerLink
dc.source.urihttps://doi.org/10.1007/s10163-021-01255-y
dc.source.uri10.1007/s10163-021-01255-y
dc.titleHydrophilicity enhancement of low‑temperature lignocellulosic biochar modified by physical–chemical techniques
dc.typeStraipsnis Web of Science DB / Article in Web of Science DB
dcterms.accessRightsCreative Commons Attribution 4.0 International licence.
dcterms.licenseCreative Commons – Attribution – 4.0 International
dcterms.references68
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.subject.researchfieldT 004 - Aplinkos inžinerija / Environmental engineering
dc.subject.vgtuprioritizedfieldsAE0202 - Aplinkos apsaugos technologijos / Environmental protection technologies
dc.subject.ltspecializationsL104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies
dc.subject.enrhamnolipids
dc.subject.enlow-temperature biochar
dc.subject.enbirch bark
dc.subject.ensteam
dc.subject.enrainfall water solution
dc.subject.ennitric acid
dcterms.sourcetitleJournal of material cycles and waste management
dc.description.issueiss. 5
dc.description.volumevol. 23
dc.publisher.nameSpringer
dc.publisher.cityNew York
dc.identifier.doi000655829000002
dc.identifier.doi10.1007/s10163-021-01255-y
dc.identifier.elaba95514710


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