Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.2518
DC FieldValueLanguage
dc.contributor.authorJabłońska, Beata-
dc.contributor.authorBusch, Mark-
dc.contributor.authorKityk, Andriy V.-
dc.contributor.authorHuber, Patrick-
dc.date.accessioned2019-11-25T10:20:18Z-
dc.date.available2019-11-25T10:20:18Z-
dc.date.issued2019-11-14-
dc.identifierdoi: 10.3390/min9110704-
dc.identifier.citationMinerals 9 (11): 704 (2019)de_DE
dc.identifier.issn2075-163Xde_DE
dc.identifier.urihttp://hdl.handle.net/11420/3862-
dc.description.abstractThe structural and surface properties of natural and modified Pliocene clays from lignite mining are investigated in the paper. Chemical modifications are made using hydrofluoric acid (HF), sulfuric acid (H2SO4), hydrochloric acid (HCl), nitric acid (HNO3), sodium hydroxide (NaOH), and hydrogen peroxide (H2O2), at a concentration of 1 mol/dm3. Scanning electron microscopy is used to detect the morphology of the samples. Nitrogen adsorption isotherms were recorded to determine the specific surface area (SSA), mesoporosity, microporosity, and fractal dimensions. The raw clay has an SSA of 66 m2/g. The most promising changes in the structural properties are caused by modifications with HF or H2SO4 (e.g., the SSA increased by about 60%). In addition, the raw and modified clays are used in preliminary tests with Cu(II) sorption, which were performed in batch static method at initial Cu(II) concentrations of 25, 50, 80, 100, 200, 300, and 500 mg/dm3 in 1% aqueous suspensions of the clayey material. The maximum sorption of Cu(II) on the raw material was 15 mg/g. The structural changes after the modifications roughly reflect the capabilities of the adsorbents for Cu(II) adsorption. The modifications with HF and H2SO4 bring a similar improvement in Cu(II) adsorption, which is around 20–25% greater than for the raw material. The structural properties of investigated clays and their adsorptive capabilities indicate they could be used as low-cost adsorbents (e.g., for industrial water pretreatment).en
dc.language.isoende_DE
dc.publisherMultidisciplinary Digital Publishing Institutede_DE
dc.relation.ispartofMineralsde_DE
dc.rightsCC BY 4.0de_DE
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectshalede_DE
dc.subjectwaste rocksde_DE
dc.subjectcoal ganguede_DE
dc.subjectporosityde_DE
dc.subjectspecific surface areade_DE
dc.subjectfractal dimensionde_DE
dc.subjectwastewater pretreatmentde_DE
dc.subject.ddc540: Chemiede_DE
dc.subject.ddc550: Geowissenschaftende_DE
dc.titleNatural and chemically modified post-mining clays : structural and surface properties and preliminary tests on copper sorptionde_DE
dc.typeArticlede_DE
dc.date.updated2019-11-22T14:47:05Z-
dc.identifier.doi10.15480/882.2518-
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.identifier.urnurn:nbn:de:gbv:830-882.055766-
tuhh.oai.showtruede_DE
tuhh.abstract.englishThe structural and surface properties of natural and modified Pliocene clays from lignite mining are investigated in the paper. Chemical modifications are made using hydrofluoric acid (HF), sulfuric acid (H2SO4), hydrochloric acid (HCl), nitric acid (HNO3), sodium hydroxide (NaOH), and hydrogen peroxide (H2O2), at a concentration of 1 mol/dm3. Scanning electron microscopy is used to detect the morphology of the samples. Nitrogen adsorption isotherms were recorded to determine the specific surface area (SSA), mesoporosity, microporosity, and fractal dimensions. The raw clay has an SSA of 66 m2/g. The most promising changes in the structural properties are caused by modifications with HF or H2SO4 (e.g., the SSA increased by about 60%). In addition, the raw and modified clays are used in preliminary tests with Cu(II) sorption, which were performed in batch static method at initial Cu(II) concentrations of 25, 50, 80, 100, 200, 300, and 500 mg/dm3 in 1% aqueous suspensions of the clayey material. The maximum sorption of Cu(II) on the raw material was 15 mg/g. The structural changes after the modifications roughly reflect the capabilities of the adsorbents for Cu(II) adsorption. The modifications with HF and H2SO4 bring a similar improvement in Cu(II) adsorption, which is around 20–25% greater than for the raw material. The structural properties of investigated clays and their adsorptive capabilities indicate they could be used as low-cost adsorbents (e.g., for industrial water pretreatment).de_DE
tuhh.publisher.doi10.3390/min9110704-
tuhh.publication.instituteWerkstoffphysik und -technologie M-22de_DE
tuhh.identifier.doi10.15480/882.2518-
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
dc.rights.nationallicensefalsede_DE
tuhh.container.articlenumber704de_DE
local.status.inpressfalsede_DE
item.cerifentitytypePublications-
item.fulltextWith Fulltext-
item.creatorGNDJabłońska, Beata-
item.creatorGNDBusch, Mark-
item.creatorGNDKityk, Andriy V.-
item.creatorGNDHuber, Patrick-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.openairetypeArticle-
item.languageiso639-1en-
item.creatorOrcidJabłońska, Beata-
item.creatorOrcidBusch, Mark-
item.creatorOrcidKityk, Andriy V.-
item.creatorOrcidHuber, Patrick-
item.grantfulltextopen-
crisitem.author.deptWerkstoffphysik und -technologie M-22-
crisitem.author.deptWerkstoffphysik und -technologie M-22-
crisitem.author.orcid0000-0002-8562-5864-
crisitem.author.orcid0000-0002-3378-6674-
crisitem.author.orcid0000-0002-4823-3220-
crisitem.author.orcid0000-0002-2126-9100-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
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