DEGRADATION OF ORGANIC POLLUTANT AND THE CORROSION BEHAVIOR OF STAINLESS ELECTRODE WITH LOW-TEMPERATURE PLASMA DISCHARGE

作者：Liu, Ya-Na^*; Si, An-Heng; Zhu, Shu-Fa; Zhou, Ming

来源：Fresenius Environmental Bulletin, 2016, 25(6): 1867-1876.

• low temperature plasma
• gliding arc
• degradation efficiency
• the corrosion of electrodes

The effects of initial solution pH, electrical conductivity and free radical scavenger on degradation rate of Acid Orange 7(AO7) were investigated by gliding arc discharge plasma. The products formed during the discharge process of different carrier gas were analyzed by gas chromatography-mass spectrometry (GC-MS) method. The corrosion behavior of electrode was observed by scanning electron microscope (SEM) and Energy Dispersive Spectrometer (EDX). The results showed that: The removal rate of AO7 was higher slightly under acidic or alkaline condition than that under neutral condition, and the solution pH dropped with the time. The effects of conductivity and n-butanol on AO7 removal were not distinct and the conductivity degrade solution increased. The corrosion of electrodes concentrated mainly in non-equilibrium plasma zone, and iron atoms occurred selective dissolution.

• 出版日期2016
• 单位河南大学