The OPARA service was recently upgraded to a new technical platform. You are visiting the outdated OPARA website. Please use https://opara.zih.tu-dresden.de/ to visit the current OPARA website. Previously stored data will be migrated in near future and then the old version of OPARA will finally be shut down. Existing DOIs for data publications remain valid.

Zur Kurzanzeige

Subtitle: contact angle measurement of sessile droplets and liquid bridges within the pore space of a dewatered filter cake

Metadaten

Ergänzende TitelSubtitle: contact angle measurement of sessile droplets and liquid bridges within the pore space of a dewatered filter cake
Alternative existierende Referenzen für den DatensatzCF_035_055200_022
Alternative existierende Referenzen für den DatensatzCF_035_055200_023
Alternative existierende Referenzen für den DatensatzMR70_Gly_99.5_stat
Alternative existierende Referenzen für den DatensatzMR70_Gly_99.5_stat_02
Alternative existierende Referenzen für den DatensatzMR70_Gly_99.5_stat_03
Alternative existierende Referenzen für den DatensatzSaphir_Gly_99.5_stat
Alternative existierende Referenzen für den DatensatzSaphir_Gly_99.5_stat_02
Alternative existierende Referenzen für den DatensatzSaphir_Gly_99.5_stat_03
Weitere mitwirkende Personen, Institutionen oder UnternehmenPeuker, Urs Alexander - Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing - Supervisor
Weitere mitwirkende Personen, Institutionen oder UnternehmenLeißner, Thomas - Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing - Supervisor
Weitere mitwirkende Personen, Institutionen oder UnternehmenGerman Research Foundation - Sponsor
Für den Inhalt der Forschungsdaten verantwortliche Person(en)Löwer, Erik - Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing (ORCID: 0000-0002-6956-8054)
Beschreibung der weiteren Datenverarbeitungautomatic centre shift, beam hardening correction (factor 0.05), gauss smoothing filter (kernel 0.7)
Art der Erhebung der DatenExperiment: in-situ filtration and dewatering (downscaled pressure nutsch 5 mm diameter) according VDI 2762-2 and VDI 2762-3
Art der Erhebung der DatenExperiment: sessile droplet shape contour analysis
Verwendete ForschungsinstrumenteX-ray microscope (ZEISS Xradia Versa 510)
Zugrundeliegende ForschungsobjekteSubstance: potassium iodide (manufacturer: Carl Roth, > 99 %, 25 mmol/l)
Zugrundeliegende ForschungsobjekteSubstance: gamma-Al2O3 (manufacturer: Almatis, solid powder, 55...200 µm)
Zugrundeliegende ForschungsobjekteSubstance: Monocrystalline Al2O3 (Sapphire), 5x5x2.5 mm³ fragment (manufacturer: Goodfellow GmbH)
Zugrundeliegende ForschungsobjekteSubstance: hydrophilic MARTOXID® Al2O3 (MR70), 5x5x4 mm³ fragment (manufacturer: Goodfellow GmbH)
Zugrundeliegende ForschungsobjekteSubstance: glycerol (manufacturer: Carl Roth, > 99,5 %)
Zugrundeliegende ForschungsobjekteSubstance: glycerol-water solution (manufacturer: Carl Roth, > 99,5 %, 24 m.-% glycerol)
KurzbeschreibungX-ray tomography image of dewatered filter cakes at irreducible saturation. The initial slurry contains Al2O3 particles suspended in a potassium iodide-glycerol solution. These were separated by cake-forming filtration with subsequent dewatering. All filtration and dewatering experiments took place in an in situ apparatus within the Zeiss Xradia 510 X-ray microscope. High resolution scans are acquired in the equilibrium state after dewatering at different locations within the cake structure to measure the local three-phase contact angle. The data are validated by sessile droplet experiments on substrates of the same material within the X-ray microscope.
Angewendete Methoden oder VerfahrenVDI 2762-1, VDI 2762-2 and VDI 2762-3
Weitere erklärende Angaben zu den Datensee note parameter.png in each measurement file for further measurement and reconstruction parameters
Informationen zur Seriecontact angle measurement of sessile droplets and liquid bridges within the pore space of a dewatered filter cake
InhaltsverzeichnisCF_035_055200_022a (in-situ flow cell cake dewatering, solid fraction 35 vol.-% of Al2O3 55 µm < x < 200 µm, internal high-resolution scan FOV 800x800 µm², centre of filter cake), CF_035_055200_023a (in-situ flow cell cake dewatering, solid fraction 35 vol.-% of Al2O3 55 µm < x < 200 µm, internal high-resolution scan FOV 800x800 µm², above filter cloth), CF_035_055200_023b (in-situ flow cell cake dewatering, solid fraction 35 vol.-% of Al2O3 55 µm < x < 200 µm, internal high-resolution scan FOV 800x800 µm², centre of filter cake), CF_035_055200_023c (in-situ flow cell cake dewatering, solid fraction 35 vol.-% of Al2O3 55 µm < x < 200 µm, internal high-resolution scan FOV 800x800 µm², centre of filter cake), CF_035_055200_023d (in-situ flow cell cake dewatering, solid fraction 35 vol.-% of Al2O3 55 µm < x < 200 µm, internal high-resolution scan FOV 800x800 µm², beneath cake surface), MR70_Gly_99.5_stat (sessile Glycerol droplet on rough, flat Al2O3 surface (MR70)), MR70_Gly_99.5_stat_02 (sessile Glycerol droplet on rough, flat Al2O3 surface (MR70)), MR70_Gly_99.5_stat_03 (sessile Glycerol droplet on rough, flat Al2O3 surface (MR70)), Saphir_Gly_99.5_stat (sessile Glycerol droplet on smooth, flat Al2O3 surface (monocrystalline sapphire)), Saphir_Gly_99.5_stat_02 (sessile Glycerol droplet on smooth, flat Al2O3 surface (monocrystalline sapphire)), Saphir_Gly_99.5_stat_03 (sessile Glycerol droplet on smooth, flat Al2O3 surface (monocrystalline sapphire))
Weitere Schlagwörtercake filtration, cake dewatering, X-ray tomography, in-situ, VDI 2762, surface wettability, modelling, sessile drop, contact angle measurement
Spracheeng
Entstehungsjahr oder Entstehungszeitraum2019-2020
Veröffentlichungsjahr2021
HerausgeberTechnical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing
Referenzen auf ergänzende MaterialienIsSourceOf: 10.1016/j.advwatres.2021.103894 (DOI)
Inhalt der ForschungsdatenDataset: X-ray tomography scans of filter cakes and sessile droplets on flat surfaces (.tiff stacks)
Inhaber der NutzungsrechteTechnical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing
Nutzungsrechte des DatensatzesCC-BY-4.0
Eingesetzte SoftwareResource Production: Xradia XMReconstructor 11.1.8
Nähere Beschreibung der/s Fachgebiete/smechanical process engineering - solid-liquid separation - cake filtration and dewatering
Angabe der FachgebieteEngineeringde
Titel des DatensatzesHigh-resolved X-ray tomography scan of dewatered filter cakes and sessile droplets


Dateien zu dieser Ressource

Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

Die Datenpakete erscheinen in:

  • Publication E: Wetting behavior of porous structures: Three-dimensional determination of the contact angle after filter cake dewatering using X-ray microscopy [1]Open Access Icon
    The wetting behavior of remaining isolated liquid bridges between particle interfaces determines the efficiency of filter cake dewatering. Micro-processes during and after dewatering can be traced by means of direct X-ray microtomography (ZEISS Xradia 510 Versa) providing insights into the filter cake structure. We measure the local contact angle between the immiscible phases on the pore scale after in-situ filter cake dewatering. By tracing the three-phase contact line and the two perpendicular vectors belonging to the solid and liquid surface, the contact angle is obtained from their scalar product at every mesh-node. The range of the resulting distribution and curvature increases with the degree of roughness, becoming more obvious for larger contact angles. The occurring roughness causes a naturally water-repellent surface and leads to low liquid saturations. The resulting angular distribution serves for a more accurate prediction of multiphase flow in pore networks as input for further pore model enhancement.

Zur Kurzanzeige