Environmental Science and Pollution Research

, Volume 26, Issue 2, pp 1606–1614 | Cite as

Removal of low-concentration thiophene by DC corona discharge plasma

  • Xueqian Wang
  • Mengxue Guo
  • Ran Zhang
  • Ping NingEmail author
  • Yixing Ma
  • Qiang Ma
  • Langlang Wang
Research Article


This study focuses on the removal of C4H4S using DC corona discharge plasma. The influences of various factors such as C4H4S concentration (ppm), temperature (°C), O2 concentration (%), and dust concentration (mg/m3) on the conversion of C4H4S were studied. Furthermore, gaseous compositions were determined using Fourier transform infrared (FTIR) spectroscopy. Solid products, which were collected from earth and discharge electrodes, were analyzed using X-ray diffraction (XRD). The results showed that, under the condition of DC corona discharge plasma, C4H4S converted to CO, CO2, S, SO2, and SO42−, and that the conversion rate increased with the increase in specific input energy (SIE). The increase of O2 concentration led to further energy consumption that generated O3, which in turn decreased the conversion rate of C4H4S. The increase in temperature exhibited a positive influence on the conversion of C4H4S when the SIE was less than 268 J/L. However, above this value of SIE, the temperature affected the conversion of C4H4S negatively with the increase in SIE. When dust was introduced, the conversion of C4H4S was significantly improved and the yield of SO2 reduced due to the reaction which took place among C4H4S, SO2 and dust in the electric field. The results showed that the DC corona discharge plasma exhibited considerable potential to remove C4H4S, while dust contributed positively towards the disposal of C4H4S.

Graphical abstract

In this work, DC corona plasma was used to remove thiophene (C4H4S) from a dust-containing gas stream. The results showed that electron collision, oxidizability of radicals, and existence of O3 were the main causes of C4H4S decomposition. The electron collision effects, contents of radicals, O3, and the conversion rate of C4H4S were enhanced with the increase in SIE (specific input energy). The main products consisted of CO, CO2, SO2, and solid products. The solid products and dust moved to the earth electrode in the electric field.


DC corona discharge plasma Thiophene Dust Simultaneous removal 


Funding information

This work was supported by the National Natural Science Foundation of China (Grant No.51868030, No.51568027, No.21876071), National Key R&D Program of China (2017YFC0210500), and Candidates of the Young and Middle Aged Academic Leaders of Yunnan Province (2015HB012).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Xueqian Wang
    • 1
  • Mengxue Guo
    • 1
  • Ran Zhang
    • 1
  • Ping Ning
    • 1
    Email author
  • Yixing Ma
    • 1
  • Qiang Ma
    • 1
  • Langlang Wang
    • 1
  1. 1.Faculty of Environmental Science and EngineeringKunming University of Science and TechnologyKunmingChina

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