Industrial wastewater pollutant degradation under atmospheric pressure plasma discharge using kINPen device

The degradation of industrial dyes and the treatment of industrial wastewater have emerged as promising applications for gas-injected atmospheric pressure plasma discharge (APP). In this study, an oxygen (O) injected APP was generated using the kINPen device to degrade an industrial dye methylene blue (CHClNS). A comparison was conducted to evaluate the degradation efficiency of the plasma when HO was mixed with the dye solution, as well as with varying rates of O injection through the kINPen device. Electrical, spectral, chemical, and imaging techniques were employed to analyze and compare the efficiency of MB degradation using the APP generating kINPen device. The experimental results demonstrated that the device design is highly efficient in generating a concentrated plasma beam with a high production of reactive oxidant species, thus making it suitable for effective methylene blue (MB) degradation. These findings contribute to the establishment of a baseline for large-scale industrial dye treatment processes.