By Topic

Chemical Efficiency of \hbox {H}_{2}\hbox {O}_{2} Production and Decomposition of Organic Compounds Under Action of DC Underwater Discharge in Gas Bubbles

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Němcová, L. ; Fac. of Chem., Brno Univ. of Technol., Brno, Czech Republic ; Nikiforov, A. ; Leys, C. ; Krcma, F.

A dc underwater discharge generated in gas bubbles (air, Ar, He, and N2) in a NaH2PO4 · 2H2O solution is studied. It is shown that the maximal concentration of hydrogen peroxide produced in the discharge does not depend on gas composition. The energy efficiency of H2O2 production is, however, gas dependent, and the highest value of 2.95 g/kWh is obtained for air. The decomposition efficiency of the Direct Blue 106 dye, which is used as a model organic pollutant at an initial concentration of 20 mg/L, increases linearly with current in the investigated range (10-30 mA). A maximal dye decoloration of 65% is observed in a N2 discharge after 20 min of treatment at a current of 30 mA. Different mechanisms of dye decoloration by plasma are proposed and discussed.

Published in:

Plasma Science, IEEE Transactions on  (Volume:39 ,  Issue: 3 )