Browsing by Author "Jiříček Tomáš"
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- ItemBiocide Modification of Ultrafiltration Membranes by Using Nanofiber Structures(Prague : Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., 2014, 2014) Dolina Jan; Lederer Tomáš; Jiříček Tomáš
- ItemBiocide Modification of Ultrafiltration Membranes Using Nanofiber Structures(Taylor & Francis Online, 2014) Dolina Jan; Lederer Tomáš; Jiříček Tomáš
- ItemBiocide Modification of Ultrafiltration Membranes Using Nanofiber Structures(2014) Dolina Jan; Lederer Tomáš; Jiříček Tomáš
- ItemExperimental Investigation of Membrane Distillation(Česká membránová platforma, 2016) Jiříček Tomáš; Pluhař Tomáš; Lederer Tomáš
- ItemFlux Enhancement in Membrane Distillation using Nanofiber Membranes(HINDAWI PUBLISHING CORP, 2016) Jiříček Tomáš; Lederer Tomáš; Komárek Michal; Chaloupek Jiří
- ItemLaboratory Tests of Various Remediation Methods for the Site Tesla Jablonn(2014) Nosek Jaroslav; Jiříček Tomáš; Hrabák Pavel; Waclawek Stanislaw; Jiříčková Lucie
- ItemMaximising flux in direct contact membrane distillation(Desalination Publications, 2017) Jiříček Tomáš; Komárek Michal; Chaloupek Jiří; Lederer TomášElectrospun PVDF nanofibre membranes were manufactured and tested on a direct-contact membrane distillation (DCMD) unit in an effort to maximise flux rate, which is generally low using standard MD membranes. In addition, membrane performance was compared with that of commonly available PTFE, PE and PES film membranes. Salt retention in all but one membrane was above 99 %. At high recirculation velocities, very thin nanofibre layers had up to 30 % higher flux rates than the best reference membranes, though it came at the cost of higher energy losses through conduction. Considering that DCMD is the least energy efficient configuration, nanofibre membranes show a promising future for MD applications with high flux rates. We suggest that new membranes be developed with specific target applications in mind, addressing specific module and operational conditions.
- ItemMembrane Separation of Gases and Vapours(VŠCHT Praha, 2014) Jiříček Tomáš; Šípek Milan
- ItemPolyurethane Nanofiber Membranes for Waste Water Treatment by Membrane Distillation(2017) Jiříček Tomáš; Komárek Michal; Lederer TomášSelf-sustained electrospun polyurethane nanofiber membranes were manufactured and tested on a direct-contact membrane distillation unit in an effort to find the optimum membrane thickness to maximize flux rate and minimize heat losses across the membrane. Also salt retention and flux at high salinities up to 100 g kg−1 were evaluated. Even though the complex structure of nanofiber layers has extreme specific surface and porosity, membrane performance was surprisingly predictable; the highest flux was achieved with the thinnest membranes and the best energy efficiency was achieved with the thickest membranes. All membranes had salt retention above 99%. Nanotechnology offers the potential to find modern solutions for desalination of waste waters, by introducing new materials with revolutionary properties, but new membranes must be developed according to the target application.
- ItemRecovering Salts from Industrial Brines by Nf-md: Case Studies on IEX Regeneration Wastewater and Chloride Rich Wash Water from a Zinc Ore Refinery(IWA, 2014) DeSchepper Wim; Jiříček Tomáš; Sankar J.S.; Cauwenberg Peter
- ItemRecovery of salts from ion-exchange regeneration streams by a coupled nanofiltration–membrane distillation process(2015) Jiříček Tomáš; Lederer Tomáš