Chemical Efficiency of H2O2 Production and Decomposition of Organic Compounds under Action of DC Underwater Discharge in Gas Bubbles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F11%3APU88217" target="_blank" >RIV/00216305:26310/11:PU88217 - 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

Chemical Efficiency of H2O2 Production and Decomposition of Organic Compounds under Action of DC Underwater Discharge in Gas Bubbles

Popis výsledku v původním jazyce

The underwater discharge generated by DC voltage in gas bubbles was studied. This contribution presents investigation of chemical efficiency of electric discharge in NaH2PO4.2H2O solution in range of the applied voltages 1.7-2.7 kV and discharge currentsof 10-30 mA. Plasma is generated in Air, Ar, He and N2 gases. It is shown that maximal concentration of hydrogen peroxide produced in different gases does not depend on gas composition. Highest energy consumption of H2O2 generation is achieved in Air discharge and it decreases up to 50% in He plasma. Destruction of Direct Blue 106 with initial concentration of 20 mg/l as model organic pollutant by underwater discharge is carried out in second part of the paper. Decomposition of the dye is linearly dependent on the discharge current. Maximal efficiency of the dye destruction of 65% is observed in N2 discharge after 20 minutes of treatment at the current of 30 mA. Different mechanisms of dye destruction by plasma are proposed and analyse

Název v anglickém jazyce

Chemical Efficiency of H2O2 Production and Decomposition of Organic Compounds under Action of DC Underwater Discharge in Gas Bubbles

Popis výsledku anglicky

The underwater discharge generated by DC voltage in gas bubbles was studied. This contribution presents investigation of chemical efficiency of electric discharge in NaH2PO4.2H2O solution in range of the applied voltages 1.7-2.7 kV and discharge currentsof 10-30 mA. Plasma is generated in Air, Ar, He and N2 gases. It is shown that maximal concentration of hydrogen peroxide produced in different gases does not depend on gas composition. Highest energy consumption of H2O2 generation is achieved in Air discharge and it decreases up to 50% in He plasma. Destruction of Direct Blue 106 with initial concentration of 20 mg/l as model organic pollutant by underwater discharge is carried out in second part of the paper. Decomposition of the dye is linearly dependent on the discharge current. Maximal efficiency of the dye destruction of 65% is observed in N2 discharge after 20 minutes of treatment at the current of 30 mA. Different mechanisms of dye destruction by plasma are proposed and analyse

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

IEEE Transactions on Plasma Science

ISSN

0093-3813

e-ISSN

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Svazek periodika

39

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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