Abstract
This chapter presents the relationship between the characteristics of the emission spectrum of discharging in liquid–gas mixture and its influence factors—such as, pulse–peak voltage, pulse-forming capacitance, and repeated rate. Light emission is the main way of energy release in discharge process, and the maximum of emission is in the ultraviolet region. Ultraviolet radiation is one of the main ways of energy release in the high-voltage discharging process in liquid–gas mixture. High-voltage pulsed discharge technology (non thermal plasma technology) is one of the most promising electrical discharge processes in advanced oxidation processes (AOPs). Such discharge in liquid–gas mixture can lead to chemical and physical process. The chemical processes are the formation of active species and the physical processes are mainly light emission and intense shock waves. The feasibility of combining the discharge process with photochemical catalysis to decolorate Acid Orange II wastewater is also discussed.
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