Mechanism and comparison of needle-type non-thermal direct and indirect atmospheric pressure plasma jets on the degradation of dyes

Pankaj Attri, Maksudbek Yusupov, Ji Hoon Park, Lakshmi Prasanna Lingamdinne, Janardhan Reddy Koduru, Masaharu Shiratani, Eun Ha Choi, Annemie Bogaerts

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Purified water supply for human use, agriculture and industry is the major global priority nowadays. The advanced oxidation process based on atmospheric pressure non-thermal plasma (NTP) has been used for purification of wastewater, although the underlying mechanisms of degradation of organic pollutants are still unknown. In this study we employ two needle-type atmospheric pressure non-thermal plasma jets, i.e., indirect (ID-APPJ) and direct (D-APPJ) jets operating at Ar feed gas, for the treatment of methylene blue, methyl orange and congo red dyes, for two different times (i.e., 20 min and 30 min). Specifically, we study the decolorization/degradation of all three dyes using the above mentioned plasma sources, by means of UV-Vis spectroscopy, HPLC and a density meter. We also employ mass spectroscopy to verify whether only decolorization or also degradation takes place after treatment of the dyes by the NTP jets. Additionally, we analyze the interaction of OH radicals with all three dyes using reactive molecular dynamics simulations, based on the density functional-tight binding method. This investigation represents the first report on the degradation of these three different dyes by two types of NTP setups, analyzed by various methods, and based on both experimental and computational studies.

Original languageEnglish
Article number34419
JournalScientific reports
Volume6
DOIs
Publication statusPublished - Oct 6 2016

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needles
plasma jets
atmospheric pressure
dyes
degradation
agriculture
methylene blue
purification
contaminants
mass spectroscopy
industries
molecular dynamics
oxidation
gases
water
spectroscopy
simulation
interactions

All Science Journal Classification (ASJC) codes

  • General

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Mechanism and comparison of needle-type non-thermal direct and indirect atmospheric pressure plasma jets on the degradation of dyes. / Attri, Pankaj; Yusupov, Maksudbek; Park, Ji Hoon; Lingamdinne, Lakshmi Prasanna; Koduru, Janardhan Reddy; Shiratani, Masaharu; Choi, Eun Ha; Bogaerts, Annemie.

In: Scientific reports, Vol. 6, 34419, 06.10.2016.

Research output: Contribution to journalArticle

Attri, Pankaj ; Yusupov, Maksudbek ; Park, Ji Hoon ; Lingamdinne, Lakshmi Prasanna ; Koduru, Janardhan Reddy ; Shiratani, Masaharu ; Choi, Eun Ha ; Bogaerts, Annemie. / Mechanism and comparison of needle-type non-thermal direct and indirect atmospheric pressure plasma jets on the degradation of dyes. In: Scientific reports. 2016 ; Vol. 6.
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