The gas-liquid mixed phase plasma generated by a nanoseconds-pulsed discharge in bubbles was used for degradation of acetic acid in water. A Shirasu porous glass (SPG) membrane tube was adopted as micro-bubble generator and part of a discharge reactor. A large number of tiny bubbles are generated from dense micro-pores (average diameter of φ50 μm) of the SPG wall and a discharge through SPG membrane was initiated between high voltage electrode and bubble surface. Comparing with a resin tube reactor which has six mechanical holes (diameter of φ1 mm), the surface area of bubbles increased with the same gas flow rate. The hydrogen peroxide (H2O2) concentration in treated water using SPG membrane reactor increased by about 71% compared with that using the resin tube reactor, and the degradation amount of acetic acid was also promoted by about 82% when Ar gas was used with the flow rate of 2 L/min. Meanwhile the H2O2 production and degradation of acetic acid proportionally increased with the growth of gas flow rate in the SPG membrane reactor.
|Journal||Plasma and Fusion Research|
|Publication status||Published - 2016 Jan 1|
- Degradation of acetic acid
- Gas-liquid plasma
- SPG membrane
ASJC Scopus subject areas
- Condensed Matter Physics