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Environmental Engineering

2006

Electrohydraulic Discharge

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Full-Text Articles in Engineering

Removal Of Methyl-Tert Butyl Ether From Water By A Pulsed Arc Electrohydraulic Discharge System, Danielle M. Angeloni, Sarah E. Dickson, Monica B. Emelko, J -S Chang Jan 2006

Removal Of Methyl-Tert Butyl Ether From Water By A Pulsed Arc Electrohydraulic Discharge System, Danielle M. Angeloni, Sarah E. Dickson, Monica B. Emelko, J -S Chang

Sarah E Dickson

The removal of methyl-tert-butyl ether (MTBE) from water by a pulsed arc electrohydraulic discharge (PAED) system was investigated experimentally at the laboratory scale. The effects of arc electrode gap, detention time and initial solution pH on the efficacy of MTBE treatment by PAED were investigated. A 0.3 kJ/pulse spark-gap-type power supply was employed in combination with a 3.0 L flow-through reactor. Experimental results showed that: 1) oxidation reactions are induced by this PAED system; 2) removal efficiency increases with increasing cumulative input energy (kW·h/m3 or kJ/L); 3) removal efficiency decreases with increasing arc electrode gap; and 4) initial solution pH …


Pulsed Electrohydraulic Discharge Characteristics In An Eccentric Electrode Cylindrical Reactor With Pbs, A Yamataki, D M. Angeloni, Sarah E. Dickson, Monica B. Emelko, K Yasuoka, J -S Chang Jan 2006

Pulsed Electrohydraulic Discharge Characteristics In An Eccentric Electrode Cylindrical Reactor With Pbs, A Yamataki, D M. Angeloni, Sarah E. Dickson, Monica B. Emelko, K Yasuoka, J -S Chang

Sarah E Dickson

Pulsed arc electrohydroulic discharge (PAED) has been proposed as a water treatment technology for the removal of chemical and microbial contaminants. In this work, we examined the fundamental characteristics of a PAED system with an eccentric electrode cylindrical reactor. Phosphate-buffered saline (PBS) water was used in lieu of tap water, because the conductivity of PBS is much higher than that of tap water. The results show that the voltage and current waveforms generated in PBS and tap water are very different due to the higher conductivity of PBS. Strong pressure waves and UV emission were also observed in PBS.