Montmorillonite-anchored magnetite nanocomposite for recovery of ammonium from stormwater and its reuse in adsorption of Sc3+

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dc.contributor.author Song, Jianzhi
dc.contributor.author Srivastava, Varsha
dc.contributor.author Kohout, Tomas
dc.contributor.author Sillanpää, Mika
dc.contributor.author Sainio, Tuomo
dc.date.accessioned 2022-02-22T17:07:01Z
dc.date.available 2022-02-22T17:07:01Z
dc.date.issued 2021-12
dc.identifier.citation Song , J , Srivastava , V , Kohout , T , Sillanpää , M & Sainio , T 2021 , ' Montmorillonite-anchored magnetite nanocomposite for recovery of ammonium from stormwater and its reuse in adsorption of Sc 3+ ' , Nanotechnology for Environmental Engineering , vol. 6 , no. 3 , 55 . https://doi.org/10.1007/s41204-021-00151-y
dc.identifier.other PURE: 174430747
dc.identifier.other PURE UUID: 9dd17fab-d18d-400b-816f-1f62640fbdf7
dc.identifier.other Scopus: 85115088589
dc.identifier.other ORCID: /0000-0003-4458-3650/work/108863344
dc.identifier.uri http://hdl.handle.net/10138/340820
dc.description.abstract The treatment of stormwater to remove and recover nutrients has received increasing interest. The objective of this study was to develop a novel adsorbent that is easy to handle, has good adsorption capacity, and is economical to use. A novel nanocomposite of montmorillonite (MT)-anchored magnetite (Fe3O4) was synthesised by co-precipitation as an adsorbent for ammonium. The MT/Fe3O4 nanocomposite had pore sizes (3–13 nm) in the range of narrow mesopores. The dispersion of the anchored Fe3O4 was confirmed by transmission electron microscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy (XPS). The nanocomposite exhibited higher affinity towards ammonium than the original MT. The Langmuir isotherm model was found to be the most suitable model to explain the ammonium adsorption behaviour of the nanocomposite. The maximum adsorption capacity for ammonium was 10.48 mg/g. The adsorption mechanism was a combination of ion exchange and electrostatic interaction. In an authentic stormwater sample, the synthesised adsorbent removed 64.2% of ammonium and reduced the amount of heavy metal contaminants including Mn, Ni, Cu and Zn. Furthermore, the ammonium loading on MT/Fe3O4 during adsorption functionalised the adsorbent surface. Additionally, the spent nanocomposite showed potential for rare earth elements (REEs) adsorption as a secondary application, especially for the selective adsorption of Sc3+. The versatile application of montmorillonite-anchored magnetite nanocomposite makes it a promising adsorbent for water treatment. Graphic abstract: [Figure not available: see fulltext.]. en
dc.format.extent 14
dc.language.iso eng
dc.relation.ispartof Nanotechnology for Environmental Engineering
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Ammonium recovery
dc.subject Magnetite
dc.subject Montmorillonite
dc.subject Nanocomposite
dc.subject REE recovery
dc.subject Stormwater
dc.subject 114 Physical sciences
dc.subject 116 Chemical sciences
dc.subject 1171 Geosciences
dc.subject 221 Nano-technology
dc.title Montmorillonite-anchored magnetite nanocomposite for recovery of ammonium from stormwater and its reuse in adsorption of Sc3+ en
dc.type Article
dc.contributor.organization Department of Geosciences and Geography
dc.contributor.organization Geology and Geophysics
dc.contributor.organization Department of Physics
dc.contributor.organization Planetary-system research
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1007/s41204-021-00151-y
dc.relation.issn 2365-6379
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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