Abstract/Details

Electrochemical degradation of methyl tert-butyl ether (MTBE) using alternating and direct currents


2009 2009

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Abstract (summary)

Electrochemical degradation of methyl tert-butyl ether (MTBE) was investigated to evaluate the effect of current type and density, electrode material, deionized (DI) water and tap water as electrolytes and initial concentration of MTBE. MTBE is an organic compound, which is highly soluble in water and is common ground water (GW) contaminant that is typically released to the GW from gasoline spills. MTBE dissolved in DI water at initial concentrations equal to 25, 250 and 2,500 mg/L was subjected to alternating and direct currents (AC and DC) at current density ranging from 0.5 to 2 mA/cm2. The volume of the electrochemical cell was 1 L and titanium, graphite, and boron doped diamond electrodes were tested. Sodium sulfate (Na2SO 4) was used as the supporting electrolyte during tests at a concentration of 300 mg/L. The key results are: (1) both AC and DC resulted in electrochemical degradation of MTBE but the rate of degradation for DC was greater than that for AC at an equivalent current density; (2) rate of degradation increased as the current density increased for DC as well as for AC; (3) rate of degradation defined as change in normalized concentration decreased as the initial concentration of MTBE was increased; (4) rate of degradation for the graphite electrode was the least among the three materials tested; and (5) Nernst-Planck equation was able to accurately model the decrease in the MTBE concentration for low initial concentrations. At higher initial concentrations, the model results were not consistent.

Indexing (details)


Subject
Chemical engineering;
Civil engineering;
Environmental engineering
Classification
0542: Chemical engineering
0543: Civil engineering
0775: Environmental engineering
Identifier / keyword
Applied sciences
Title
Electrochemical degradation of methyl tert-butyl ether (MTBE) using alternating and direct currents
Author
Seo, Cheon Yong
Number of pages
71
Publication year
2009
Degree date
2009
School code
0128
Source
MAI 48/02M, Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781109420807
Advisor
Khire, Milind V.
University/institution
Michigan State University
University location
United States -- Michigan
Degree
M.S.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
1471884
ProQuest document ID
304930192
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304930192
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