Sustainable Tannin Gels for the Efficient Removal of Metal Ions and Organic Dyes

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dc.contributor.authorKoopmann, Ann-Kathrincs
dc.contributor.authorEhgartner, Caroline Ramonacs
dc.contributor.authorEuchler, Danielcs
dc.contributor.authorClaros Vargas, Martha Carmiňacs
dc.contributor.authorHüsing, Nicolacs
dc.coverage.issue10cs
dc.coverage.volume9cs
dc.date.accessioned2024-02-21T13:46:11Z
dc.date.available2024-02-21T13:46:11Z
dc.date.issued2023-11-15cs
dc.description.abstractThe usage of a highly efficient, low-cost, and sustainable adsorbent material as an industrial wastewater treatment technique is required. Herein, the usage of the novel, fully sustainable tannin-5-(hydroxymethyl)furfural (TH) aerogels, generated via a water-based sol-gel process, as compatible biosorbent materials is presented. In particular, this study focusses on the surface modification of the tannin biosorbent with carboxyl or amino functional groups, which, hence, alters the accessible adsorption sites, resulting in increased adsorption capacity, as well as investigating the optimal pH conditions for the adsorption process. Precisely, highest adsorption capacities are acquired for the metal cations and cationic dye in an alkaline aqueous environment using a carboxyl-functionalized tannin biosorbent, whereas the anionic dye requires an acidic environment using an amino-functionalized tannin biosorbent. Under these determined optimal conditions, the maximum monolayer adsorption capacity of the tannin biosorbent ensues in the following order: Cu2+ > RB > Zn2+ > MO, with 500, 244, 192, 131 mg g(-1), respectively, indicating comparable or even superior adsorption capacities compared to conventional activated carbons or silica adsorbents. Thus, these functionalized, fully sustainable, inexpensive tannin biosorbent materials, that feature high porosity and high specific surface areas, are ideal industrial candidates for the versatile adsorption process from contaminated (heavy) metal or dye solutions.en
dc.formattextcs
dc.format.extent1-19cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationGels. 2023, vol. 9, issue 10, p. 1-19.en
dc.identifier.doi10.3390/gels9100822cs
dc.identifier.issn2310-2861cs
dc.identifier.other186703cs
dc.identifier.urihttps://hdl.handle.net/11012/245121
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofGelscs
dc.relation.urihttps://www.mdpi.com/2310-2861/9/10/822cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2310-2861/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectadsorptionen
dc.subjectbiosorbenten
dc.subjectporous materialsen
dc.subjecttanninen
dc.subjectmetal complexationen
dc.titleSustainable Tannin Gels for the Efficient Removal of Metal Ions and Organic Dyesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-186703en
sync.item.dbtypeVAVen
sync.item.insts2024.02.21 14:46:11en
sync.item.modts2024.02.21 14:13:42en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Sdílená laboratoř RP1cs
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