Journal
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
Volume 135, Issue -, Pages 133-140Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cep.2018.11.023
Keywords
Pulsed discharge plasma; CBB; Wastewater; Dye; Decomposition
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan [21110004, 21110009]
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In this study, the introduction of non-equilibrium atmospheric-pressure plasma in a slug flow reactor system is demonstrated as a chemical reaction medium. The water containing Coomassie Brilliant Blue R - 250 (CBB) and various gas species are used as the liquid and gas phases, respectively, which are flown at 1.5 and 0.5 mL/min. The optical emission spectra indicate that different reactive oxidation species are generated by each gas when the pulsed discharge plasma is applied to the slug flow reactor system. The oxygen-base reactive species are found in abundance. The decoloration of CBB seems to occur, which is indicated by a change in the color of the aqueous solution. The UV - vis spectra show that the order of the CBB decomposition rate is oxygen > air > nitrogen > argon > helium.
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