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Characterization of a microwave plasma jet (TIAGO) in‐contact with water: Application in degradation of methylene blue dye
Author(s) -
Hamdan Ahmad,
Gag Clara,
Aykul Melisa,
Profili Jacopo
Publication year - 2020
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201900157
Subject(s) - methylene blue , microwave , wastewater , degradation (telecommunications) , plasma , conductivity , pollutant , materials science , jet (fluid) , nozzle , analytical chemistry (journal) , chemical engineering , chemistry , nuclear chemistry , environmental engineering , environmental chemistry , environmental science , photocatalysis , organic chemistry , catalysis , physics , electrical engineering , thermodynamics , engineering , quantum mechanics
Plasma in or in‐contact with liquids is a research field that has great potential in the treatment of wastewater. Today, efforts are focused on finding a plasma source that can efficiently remove persistent pollutants from water. In this study, we evaluate the effectiveness of a microwave plasma jet, in TIAGO (Torche à Injection Axiale sur Guide d'Ondes) configuration, using methylene blue (MB) as a model organic contaminant. The assessments conducted herein show that MB degradation is promoted at short nozzle–water distance, high gas flow rate, elevated microwave power, and excessive initial water conductivity (up to 10,000 µS/cm). The plasma characteristics, namely composition, electron density, and OH rotational temperature, as well as water acidity and conductivity are also evaluated.