Development of non-thermal plasma jet and its potential application for color degradation of organic pollutant in wastewater treatment

International Conference on Eco Engineering Development 2017

生态环境科学

Kasih, Tota Pirdo^1 ; Kharisma, Angel^1 ; Perdana, Muhammad Kevin^1 ; Murphiyanto, Richard Dimas Julian^1

Industrial Engineering Department, Faculty of Engineering, Bina Nusantara University, Jakarta

11480, Indonesia^1

关键词: Color degradation;    Efficient interaction;    High voltage power supply;    Hydroxyl radicals;    Nonthermal plasma;    Organic wastewater treatment;    Oxidative reaction;    Plasma jet system;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/109/1/012004/pdf
DOI  :  10.1088/1755-1315/109/1/012004

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper presents the development of non-thermal plasma-based AOPs for color degradation in wastewater treatment. The plasma itself was generated by an in-house high voltage power supply (HVPS). Instead of gas-phase plasma system, we applied plasma jet system underwater during wastewater treatment without additional any chemicals (chemical-free processing). The method is thought to maximize the energy transfer and increase the efficient interaction between plasma and solution during the process. Our plasma jet system could proceed either by using helium (He), argon (Ar) and air as the medium in an open air atmosphere. Exploring the developed plasma to be applied in organic wastewater treatment, we demonstrated that the plasma jet could be generated underwater and yields in color degradation of methylene blue (MB) wastewater model. When using Ar gas as a medium, the color degradation of MB could be achieved within 90 minutes. Whereas, by using Ar with an admixing of oxygen (O2) gas, the similar result could be accomplished within 60 minutes. Additional O2gas in the latter might produce more hydroxyl radicals and oxygen-based species which speed up the oxidative reaction with organic pollutants, and hence accelerate the process of color degradation.