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- W3150408746 abstract "The degradation of an azo dye, acid orange 7 (AO7), caused by different high voltage pulsed electrical discharge modes (spark, streamer and corona discharge) induced by the various initial conductivities was investigated. A new type of pulsed high voltage source with thyratron switch and Blumlein pulse forming net (BPFN) was used. The typical discharge waveforms of voltage, current, power, pulse en-ergy and the pictures of spark, streamer and corona discharge modes were presented. The results in-dicated that pulsed electrical discharges led to complete decolorization and substantial decrease of the chemical oxygen demand (COD) of the dye solution. The main intermediate products were monitored by GC-MS. The discharge modes changed from spark to streamer and to corona discharge, and the streamer length decreased with the liquid conductivity increasing. At a constant input power, the peak voltage, peak current, peak power and energy per pulse of the three discharge modes ranked in the following order: spark streamer corona. The effective energy transfer efficiency of AO7 removal was higher for spark discharge (57.2%) than for streamer discharge (40.4%) and corona discharge (27.6%). Moreover, the energy utilization efficiency of AO7 removal for spark discharge was 1.035×10~(-9) mol/J, and for streamer and corona discharge they were 0.646×10~(-9) and 0.589×10~(-9) mol/J. Both the energy transfer efficiency and the energy utilization efficiency of spark discharge were the highest." @default.
- W3150408746 created "2021-04-13" @default.
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- W3150408746 date "2008-01-01" @default.
- W3150408746 modified "2023-09-28" @default.
- W3150408746 title "Evaluation of energy transfer and utilization efficiency of azo dye removal by different pulsed electrical discharge modes" @default.
- W3150408746 hasPublicationYear "2008" @default.
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