Publication: Decolorization of methylene blue in an ar non-thermal plasma reactor
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Issued Date
2020
Resource Type
File Type
application/pdf
ISSN
17919320
Other identifier(s)
2-s2.0-85082694707
Rights Holder(s)
Scopus
Bibliographic Citation
Journal of Engineering Science and Technology Review. Vol 13, No.1 (2020), p.114-119
Suggested Citation
Matra K., Tawkaew S. Decolorization of methylene blue in an ar non-thermal plasma reactor. Journal of Engineering Science and Technology Review. Vol 13, No.1 (2020), p.114-119. doi:10.25103/jestr.131.15 Retrieved from: https://hdl.handle.net/20.500.14740/4803
Author(s)
Abstract
The decolorization of methylene blue (MB) dye wastewater was performed via atmospheric Ar non-thermal plasma (Ar-NTP). Investigations were carried out into two main aspects of the model; hydrogen peroxide (H2O2) production and the decolorization of MB by Ar-NTP. It was found that H2O2 could be obtained better at a lower pH and with a higher Ar gas flow rate and plasma power. The decolorization rate constant of MB decreased with the increase in the solution pH, and it was found to follow a pseudo-first-order reaction. The optimum experimental conditions in this paper for the decolorization of a 5 ppm initial MB concentration were: 20.35 W plasma power, 4 LPM Ar gas flow rate, and pH 5, together with the addition of 920 ppm Fe2+. The decorization rate constant was 83.7x10-3 min-1, which was 9.73 times greater than that without the addition of Fe2+ under the same experimental conditions. © 2020 School of Science, IHU.