Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Pavel Bulejko"'
An analysis on energy demands in airborne particulate matter filtration using hollow-fiber membranes
Autor:
Pavel Bulejko
Publikováno v:
Energy Reports, Vol 7, Iss , Pp 2727-2736 (2021)
This work analyzes energy requirements for drawing the air through a hollow-fiber membrane (HFM) during air filtration. Polypropylene HFMs varying in inner fiber diameter (230 and 470μm) were used to separate the ASHRAE A2 fine test dust from a simu
Externí odkaz:
https://doaj.org/article/be115e0f3a99498b9598d772289465d3
Publikováno v:
Membranes, Vol 11, Iss 7, p 467 (2021)
In this work, we tried to analyze dust loading behavior of polypropylene hollow fiber membranes using average pressure drop models. Hollow fiber membranes varying in fiber diameter were loaded with a standardized test dust to simulate particle-pollut
Externí odkaz:
https://doaj.org/article/1a14dd0c96ee4e37b84d01bc0b3cf5bc
Autor:
Pavel Bulejko
Publikováno v:
Nanomaterials, Vol 8, Iss 6, p 447 (2018)
Hollow-fiber membranes (HFMs) have been widely applied to many liquid treatment applications such as wastewater treatment, membrane contactors/bioreactors and membrane distillation. Despite the fact that HFMs are widely used for gas separation from g
Externí odkaz:
https://doaj.org/article/383322d932c24bbea9d858013f29a588
Autor:
Pavel Bulejko, Nikola Šuleková, Jaroslav Vlasák, Antti Häkkinen, Tomáš Svěrák, Teemu Kinnarinen, Ritva Tuunila
Publikováno v:
Powder Technology. 395:556-561
The aim of this work is to study changes in the properties of aqueous corundum suspensions during ultrafine grinding with and without the addition of an activator. Corundum suspensions were prepared in distilled water in a ratio of 1:5 with and witho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3ed9ed21357c5079a6753479502f87f
https://doi.org/10.1016/j.powtec.2021.09.079
https://doi.org/10.1016/j.powtec.2021.09.079
Autor:
Eliška Stránská, Pavel Bulejko
Publikováno v:
Ionics. 25:4251-4263
Moisture content in a strongly hydrophilic ion-exchange resin is one of the key parameters in commercial production of ion-exchange membranes. This work tried to clarify the effect of moisture content in an anion-exchange resin (AER) on the structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5390e366827bd1461a89fce695493c2
https://doi.org/10.1007/s11581-019-02984-9
https://doi.org/10.1007/s11581-019-02984-9
Publikováno v:
Engineering Failure Analysis. 131:105895
This work analyzes resistance of polyamide hollow fibers used for heat exchangers against extremely high pressures. Hollow fibers made of five different commercially available polyamides and one type of polyphenylene sulfide were tested at different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4376ddc7597c2050525238ce72cf0a85
https://doi.org/10.1016/j.engfailanal.2021.105895
https://doi.org/10.1016/j.engfailanal.2021.105895
Publikováno v:
Powder Technology. 340:344-353
This work aimed to determine filtration performance of polypropylene hollow-fiber membranes in removing submicron particles from air. Experiments were performed in a chamber simulating dust environment with synthetic submicron-size particles (microni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d7206b062920d8a296a2a8c9c33c771
https://doi.org/10.1016/j.powtec.2018.09.040
https://doi.org/10.1016/j.powtec.2018.09.040
Autor:
Pavel Bulejko, Matěj Březina, Lucie Galvánková, Pavel Kejik, Lukáš Kalina, Vlastimil Bílek, Jan Hajzler
Publikováno v:
Solid State Phenomena. 276:179-184
This paper studies possibilities of alkali-activated fly ash (AAFA) for the preparation of systems with preserved certain porosity level. Such systems would be used for example as filtration barriers, which are commonly prepared by both energetically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f20ea64b6fcbcee5b14d435fbf1dbfb
https://doi.org/10.4028/www.scientific.net/ssp.276.179
https://doi.org/10.4028/www.scientific.net/ssp.276.179
Publikováno v:
Separation and Purification Technology. 197:122-128
This work aimed to determine filtration performance of polypropylene hollow-fibre membranes (HFMs) for removing submicron particles from air. Experiments were performed in a glass chamber supplied with a nanoaerosol particles formed by burning incens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88445ca0b470f4cc4e1a636a2ac4311c
https://doi.org/10.1016/j.seppur.2017.12.056
https://doi.org/10.1016/j.seppur.2017.12.056
Autor:
Pavel Bulejko, Eliška Stránská
Publikováno v:
Materials Chemistry and Physics. 205:470-479
This work deals with the influence of moisture content of cation-exchange resin (CER) on the properties of prepared cation-exchange membranes (CEMs). CER was dried and moistened to 2, 4, 6, 8, 10 and 25% and then milled using a vibratory mill. The CE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7feb775b13ae5f0cb2078cacf6f5deea
https://doi.org/10.1016/j.matchemphys.2017.11.049
https://doi.org/10.1016/j.matchemphys.2017.11.049