NDLI: Removal of Methylene Blue from Aging Water Solutions Treated by a Submerged Arc

Content Provider	Springer Nature Link
Author	Parkansky, Naum Yakubov, Violetta Simon, Evelina Faktorovich Alterkop, Boris A. Boxman, Raymond L. Berkh, Olga
Copyright Year	2014
Abstract	Low voltage, low energy submerged pulsed arcs with a pulse repetition rate of 100 Hz, energies of 2.6–192 mJ and durations of 10–40 μs, followed by aging in the dark, were used to decompose 10 mg/l methylene blue (MB) dissolved in 40 ml of water, with the addition of 0.5 % H$_{2}$O$_{2}$. Electrode pairs composed of Fe/Fe, Ti/Ti, Cu/Cu, Cu/Fe, Fe/Cu, Ti/Fe, Fe/Ti, Cu/Ti and Ti/Cu were used. MB degraded during arc treatment, and during post arc treatment aging. The aging degraded MB faster (by a factor of ~2–3) when the MB solution was subjected to arcing with dissimilar electrodes when one of them was Cu, than for arcing with other used electrode pairs. The impact of the arc treatment time and the electrode materials on the MB removal ratio (C$_{0}$–C$_{ta}$)/C$_{0}$ was determined as a function of aging time t$_{a}$, where C$_{0}$ and C$_{ta}$ are the MB concentrations initially and after t$_{a}$. For a pulse duration of 10 μs and pulse energies of 2–20 mJ, the MB removal rate increased linearly with treatment time and its growth rate increased with pulse energy. The linear dependence of the MB removal rate on treatment time was violated with pulse duration of 40 μs and pulse energies of 30–200 mJ. Kinetics of the MB degradation during aging of the arc treated solution was well described by the 1st order linear rate equation.
Starting Page	745
Ending Page	754
Page Count	10
File Format	PDF
ISSN	02724324
Journal	Plasma Chemistry and Plasma Processing
Volume Number	34
Issue Number	4
e-ISSN	15728986
Language	English
Publisher	Springer US
Publisher Date	2014-02-15
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Submerged arc Methylene blue removal Aging time Inorganic Chemistry Mechanics Characterization and Evaluation of Materials Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Surfaces, Coatings and Films Condensed Matter Physics Chemical Engineering

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