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

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

DJ - Pollution and water control

OECD FORD branch

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Project

<a href="/en/project/TA01010552" target="_blank" >TA01010552: The use of membranes with nano-pores for decreasing of health risk caused by volatile organic compounds in small water sources</a><br>

Continuities

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

Publication year

2013

Confidentiality

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

Article name in the collection

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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Number of pages

6

Pages from-to

473-478

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

Oct 16, 2013

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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