SEPARATION OF VOLATILE ORGANIC COMPOUND FROM POLLUTED WATER THROUGH NANO-SIZED PORES AS A PARALLEL TECHNOLOGY TO THE RADON REMOVAL

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27200%2F13%3A86086460" target="_blank" >RIV/61989100:27200/13:86086460 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

SEPARATION OF VOLATILE ORGANIC COMPOUND FROM POLLUTED WATER THROUGH NANO-SIZED PORES AS A PARALLEL TECHNOLOGY TO THE RADON REMOVAL

Popis výsledku v původním jazyce

Hydrophobic membranes with pores in the size from tens to hundreds nanometres serving as an interface between water and air behave so, that the surface tension prevents the throughput of liquid water through pores even under moderate overpressure and in the parallel, direct water - gas interface shortens the diffusion pathways of volatile compounds dissolved in water to the surface. This phenomenon was observed for radon previously and used for water decontamination by pervaporation through hollow fibre membrane with nanopores. The similarity of behaviour of radon and small volatile hydrophobic molecules leads to the hypothesis, that such compounds can be removed from contaminated waters in similar way as radon. The pollutants known as volatile organic compounds (VOCs), are candidates for this technique. Toluene and perchlorethylene were tested as pollutants to be removed by simple pervaporation technique using two different hollow-fibre membranes (polypropylene and polysulfone). Both pollutants have shown lower separation rate than radon, but still sufficient enough to give the perspective for practical purification of contaminated waters. With the effort to increase efficiency of decontamination process, the influence of physical parameters as water flow and geometry of microfibers bundle with respect to water movement were studied.

Název v anglickém jazyce

SEPARATION OF VOLATILE ORGANIC COMPOUND FROM POLLUTED WATER THROUGH NANO-SIZED PORES AS A PARALLEL TECHNOLOGY TO THE RADON REMOVAL

Popis výsledku anglicky

Hydrophobic membranes with pores in the size from tens to hundreds nanometres serving as an interface between water and air behave so, that the surface tension prevents the throughput of liquid water through pores even under moderate overpressure and in the parallel, direct water - gas interface shortens the diffusion pathways of volatile compounds dissolved in water to the surface. This phenomenon was observed for radon previously and used for water decontamination by pervaporation through hollow fibre membrane with nanopores. The similarity of behaviour of radon and small volatile hydrophobic molecules leads to the hypothesis, that such compounds can be removed from contaminated waters in similar way as radon. The pollutants known as volatile organic compounds (VOCs), are candidates for this technique. Toluene and perchlorethylene were tested as pollutants to be removed by simple pervaporation technique using two different hollow-fibre membranes (polypropylene and polysulfone). Both pollutants have shown lower separation rate than radon, but still sufficient enough to give the perspective for practical purification of contaminated waters. With the effort to increase efficiency of decontamination process, the influence of physical parameters as water flow and geometry of microfibers bundle with respect to water movement were studied.

Druh

D - Stať ve sborníku

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

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Projekt

<a href="/cs/project/TA01010552" target="_blank" >TA01010552: Využití membrán s nano-póry pro snižování zdravotních rizik VOC z malých vodních zdrojů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

NANOCON 2013 : 5th international conference : October 16th-18th 2013, hotel Voroněž I, Brno, Czech Republic, EU : conference proceedings

ISBN

978-80-87294-47-5

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

473-478

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

16. 10. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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