Abstract
Plasma-based process intensification is considered as a promising technology in advanced oxidation processes (AOPs) for the wastewater treatment. In this work, we have developed a novel plasma-assisted rotating disk reactor (plasma-RDR). The rotating disk was used as ground electrode to improve the discharge uniformity, and also as an internal to enhance the mass transfer efficiency. Experimental results show that the degradation efficiency of Rhodamine B (RhB) in the plasma-RDR increased by 60% within 30 min when the rotational speed varied from 0 to 500 rpm. A discussion for the enhancement of degradation efficiency in the plasma-RDR was presented. Effects of peak voltage, electrode gap, and other operating conditions on the degradation efficiency of RhB in the plasma-RDR were investigated. Major intermediates of RhB degradation after the plasma treatment were also analyzed.
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