Název: Photocatalytic Decomposition of Wastewater from the Production of Explosives
Autoři: Brom, Petr ; Brožek, Vlastimil ; Březina, Václav ; Hlína, Michal ; Mastný, L. ; Novák, M.
Typ dokumentu: Příspěvky z konference
Konference/Akce: International Conference on Chemical Technology, ICCT2016 /4./, Mikulov (CZ), 20160425
Rok: 2016
Jazyk: eng
Abstrakt: Water stabilized plasma generator WSP® H-500, operating on the principle of Gerdien arc was used for the photocatalytic decomposition of furazan- and picraminate-based explosives. The generator emits intensive radiation in the range of 300-660 nm, which allows not only to activate photocatalysts based on TiO2, but also other semiconductor oxides with a narrower band gap, such as tungsten oxide. The photocatalytic decomposition of sewage and slurries containing the potassium salt of 4-hydroxy-4,6-dihydro-5,7- dinitrobenzofurazane-3-oxide (KDNBF) or sodium picraminate (NaC6H4N3O5) was performed using the anatase paste and newly developed photocatalyst produced by the company Precheza a.s. The photocatalytic reactor was built using a quartz tube coil with an internal volume of 650 ml, with a nominal size of the irradiated area of 7.5 dm2 (value reduced by the area of the gaps between coil turns) to enable the flow the processing solution or suspension of up to 10 l / min. The centre of the coil is exposed to the plasma jet with the intensity\nof 80 kW; of which 15 kW is transformed into the light radiation. 11% of the radiation output was used for the presented experiments. The time of exposition was 45 mins and 20 l of solution were treated. In the case of KDNBF, 90% of the compound was decomposed. Moreover, 100% of sodium picraminate were decomposed after 15 minutes into low-molecular inorganic compounds. Advantage of the assembly is the ability to treat highly dangerous chemical compounds in a closed cycle and test selective catalyst
Klíčová slova: dinitrobenzofurazane; photocatalytic decomposition; plasma generator; sodium picraminate
Číslo projektu: GA15-19444S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: Proceedings of the 4th International Conference on Chemical Technology, ISBN 978-80-86238-94-4, ISSN 2336-811X

Instituce: Ústav fyziky plazmatu AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0263569

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-261321


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky plazmatu
Konferenční materiály > Příspěvky z konference