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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/3380

    Authors: WuTing-Nien (吳庭年)
    Keywords: Methyl tert-butyl ether (MTBE)
    electrochemical technology
    platinum electrode
    Date: 2006
    Issue Date: 2009-08-14 23:18:53 (UTC+8)
    Abstract: Instead of alkyl lead additives, methyl tert-butyl ether (MTBE) has become the most widelyused unleaded gasoline additive so far. Although new formulated gasoline did improve air pollutionproblem caused by lead-containing suspended particles, it brought about the troubles regardinggroundwater pollution. Electrochemical technology, one of novel advanced oxidation technologies,has the advantages of easy control, excellent performance, small occupancy, and no secondarypollution. This study is focused on the removal of MTBE from groundwater by the mechanism ofelectro-oxidation with platinum electrodes. Lab experiments were conducted in a spiltless bath typecell equipped with a platinum electrode as working electrode, a platinum wire as counter electrode,and a Ag/AgCl electrode as reference electrode. The voltage was controlled by an electrochemicalanalyzer. During electro-oxidation experiments, the variables including electrolyte species, mediatoraddition, voltage supply, and reaction time were examined to compare the removal efficiency,degradation pathway and reaction by-products of MTBE oxidation. Experiment results showed that97% of MTBE could be successfully removed using 1 M Na2SO4 electrolyte at 2.4 V after 180 min,while the removal of MTBE was only 80% using 1 M KCl electrolyte under the identical conditions.With mediator addition of 1 mM Fe2+, the removal of MTBE could improve to 96% within 150 minusing 1 M KCl electrolyte at 2.4 V, and by-products identified as tert-butyl formate, tert-butylalcohol, acetone, methyl acetate and CO2. According to the production of CO2, MTBE can besuccessfully mineralized through the mechanism of electro-oxidation.
    Relation: Journal of the Chinese Institute of Environmental Engineering, v. 16, no. 3, 2006, p. 1-7
    Appears in Collections:[環境工程系所] 期刊論文

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