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High-resolved X-ray tomography scan of dewatered filter cakes and sessile droplets
Subtitle: contact angle measurement of sessile droplets and liquid bridges within the pore space of a dewatered filter cake
Metadaten
| Ergänzende Titel | Subtitle: contact angle measurement of sessile droplets and liquid bridges within the pore space of a dewatered filter cake | |
| Alternative existierende Referenzen für den Datensatz | CF_035_055200_022 | |
| Alternative existierende Referenzen für den Datensatz | CF_035_055200_023 | |
| Alternative existierende Referenzen für den Datensatz | MR70_Gly_99.5_stat | |
| Alternative existierende Referenzen für den Datensatz | MR70_Gly_99.5_stat_02 | |
| Alternative existierende Referenzen für den Datensatz | MR70_Gly_99.5_stat_03 | |
| Alternative existierende Referenzen für den Datensatz | Saphir_Gly_99.5_stat | |
| Alternative existierende Referenzen für den Datensatz | Saphir_Gly_99.5_stat_02 | |
| Alternative existierende Referenzen für den Datensatz | Saphir_Gly_99.5_stat_03 | |
| Weitere mitwirkende Personen, Institutionen oder Unternehmen | Peuker, Urs Alexander - Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing - Supervisor | |
| Weitere mitwirkende Personen, Institutionen oder Unternehmen | Leißner, Thomas - Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing - Supervisor | |
| Weitere mitwirkende Personen, Institutionen oder Unternehmen | German 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 Datenverarbeitung | automatic centre shift, beam hardening correction (factor 0.05), gauss smoothing filter (kernel 0.7) | |
| Art der Erhebung der Daten | Experiment: in-situ filtration and dewatering (downscaled pressure nutsch 5 mm diameter) according VDI 2762-2 and VDI 2762-3 | |
| Art der Erhebung der Daten | Experiment: sessile droplet shape contour analysis | |
| Verwendete Forschungsinstrumente | X-ray microscope (ZEISS Xradia Versa 510) | |
| Zugrundeliegende Forschungsobjekte | Substance: potassium iodide (manufacturer: Carl Roth, > 99 %, 25 mmol/l) | |
| Zugrundeliegende Forschungsobjekte | Substance: gamma-Al2O3 (manufacturer: Almatis, solid powder, 55...200 µm) | |
| Zugrundeliegende Forschungsobjekte | Substance: Monocrystalline Al2O3 (Sapphire), 5x5x2.5 mm³ fragment (manufacturer: Goodfellow GmbH) | |
| Zugrundeliegende Forschungsobjekte | Substance: hydrophilic MARTOXID® Al2O3 (MR70), 5x5x4 mm³ fragment (manufacturer: Goodfellow GmbH) | |
| Zugrundeliegende Forschungsobjekte | Substance: glycerol (manufacturer: Carl Roth, > 99,5 %) | |
| Zugrundeliegende Forschungsobjekte | Substance: glycerol-water solution (manufacturer: Carl Roth, > 99,5 %, 24 m.-% glycerol) | |
| Kurzbeschreibung | X-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 Verfahren | VDI 2762-1, VDI 2762-2 and VDI 2762-3 | |
| Weitere erklärende Angaben zu den Daten | see note parameter.png in each measurement file for further measurement and reconstruction parameters | |
| Informationen zur Serie | contact angle measurement of sessile droplets and liquid bridges within the pore space of a dewatered filter cake | |
| Inhaltsverzeichnis | CF_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 Schlagwörter | cake filtration, cake dewatering, X-ray tomography, in-situ, VDI 2762, surface wettability, modelling, sessile drop, contact angle measurement | |
| Sprache | eng | |
| Entstehungsjahr oder Entstehungszeitraum | 2019-2020 | |
| Veröffentlichungsjahr | 2021 | |
| Herausgeber | Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing | |
| Referenzen auf ergänzende Materialien | IsSourceOf: 10.1016/j.advwatres.2021.103894 (DOI) | |
| Inhalt der Forschungsdaten | Dataset: X-ray tomography scans of filter cakes and sessile droplets on flat surfaces (.tiff stacks) | |
| Inhaber der Nutzungsrechte | Technical University Bergakademie Freiberg - Institute of Mechanical Process Engineering and Mineral Processing | |
| Nutzungsrechte des Datensatzes | CC-BY-4.0 | |
| Eingesetzte Software | Resource Production: Xradia XMReconstructor 11.1.8 | |
| Nähere Beschreibung der/s Fachgebiete/s | mechanical process engineering - solid-liquid separation - cake filtration and dewatering | |
| Angabe der Fachgebiete | Engineering | de |
| Titel des Datensatzes | High-resolved X-ray tomography scan of dewatered filter cakes and sessile droplets |
Dateien zu dieser Ressource
Die Datenpakete erscheinen in:
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Publication E: Wetting behavior of porous structures: Three-dimensional determination of the contact angle after filter cake dewatering using X-ray microscopy [1]
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.