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Removal of micropollutants from water in a continuous-flow electrical discharge reactor

Niels Wardenier (UGent) , Patrick Vanraes (UGent) , Anton Nikiforov (UGent) , Stijn Van Hulle (UGent) and Christophe Leys (UGent)
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Abstract
The emergence of micropollutants into our aquatic resources is regarded as an issue of increasing environmental concern. To protect the aquatic environment against further contamination with micropollutants, treatment with advanced oxidation processes (AOPs) is put forward as a promising technique. In this work, an innovative AOP based on electrical discharges in a continuous-flow pulsed dielectric barrier discharge (DBD) reactor with falling water film over activated carbon textile is examined for its potential application in water treatment. The effect of various operational parameters including feed gas type, gas flow rate, water flow rate and power on removal and energy efficiency has been studied. To this end, a synthetic micropollutant mixture containing five pesticides (atrazine, alachlor, diuron, dichlorvos and pentachlorophenol), two pharmaceuticals (carbamazepine and 1,7-alpha-ethinylestradiol), and 1 plasticizer (bisphenol A) is used. While working under optimal conditions, energy consumption was situated in the range 2.42-4.25 kW h/m(3), which is about two times lower than the economically viable energy cost of AOPs (5 kW h/m(3)). Hence, the application of non-thermal plasma could be regarded as a promising alternative AOP for (industrial) wastewater remediation.
Keywords
Wastewater treatment, Advanced oxidation process, Non-thermal plasma, Micropollutants, Electrical energy per order, DIELECTRIC BARRIER DISCHARGE, PULSED CORONA DISCHARGE, ADVANCED OXIDATION PROCESSES, ATMOSPHERIC-PRESSURE PLASMA, WASTE-WATER, AQUEOUS-SOLUTIONS, ACTIVATED CARBON, INDUCED DEGRADATION, PRODUCT FORMATION, ATRAZINE

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Chicago
Wardenier, Niels, Patrick Vanraes, Anton Nikiforov, Stijn Van Hulle, and Christophe Leys. 2019. “Removal of Micropollutants from Water in a Continuous-flow Electrical Discharge Reactor.” Journal of Hazardous Materials 362: 238–245.
APA
Wardenier, N., Vanraes, P., Nikiforov, A., Van Hulle, S., & Leys, C. (2019). Removal of micropollutants from water in a continuous-flow electrical discharge reactor. JOURNAL OF HAZARDOUS MATERIALS, 362, 238–245.
Vancouver
1.
Wardenier N, Vanraes P, Nikiforov A, Van Hulle S, Leys C. Removal of micropollutants from water in a continuous-flow electrical discharge reactor. JOURNAL OF HAZARDOUS MATERIALS. 2019;362:238–45.
MLA
Wardenier, Niels, Patrick Vanraes, Anton Nikiforov, et al. “Removal of Micropollutants from Water in a Continuous-flow Electrical Discharge Reactor.” JOURNAL OF HAZARDOUS MATERIALS 362 (2019): 238–245. Print.
@article{8574288,
  abstract     = {The emergence of micropollutants into our aquatic resources is regarded as an issue of increasing environmental concern. To protect the aquatic environment against further contamination with micropollutants, treatment with advanced oxidation processes (AOPs) is put forward as a promising technique. In this work, an innovative AOP based on electrical discharges in a continuous-flow pulsed dielectric barrier discharge (DBD) reactor with falling water film over activated carbon textile is examined for its potential application in water treatment. The effect of various operational parameters including feed gas type, gas flow rate, water flow rate and power on removal and energy efficiency has been studied. To this end, a synthetic micropollutant mixture containing five pesticides (atrazine, alachlor, diuron, dichlorvos and pentachlorophenol), two pharmaceuticals (carbamazepine and 1,7-alpha-ethinylestradiol), and 1 plasticizer (bisphenol A) is used. While working under optimal conditions, energy consumption was situated in the range 2.42-4.25 kW h/m(3), which is about two times lower than the economically viable energy cost of AOPs (5 kW h/m(3)). Hence, the application of non-thermal plasma could be regarded as a promising alternative AOP for (industrial) wastewater remediation.},
  author       = {Wardenier, Niels and Vanraes, Patrick and Nikiforov, Anton and Van Hulle, Stijn and Leys, Christophe},
  issn         = {0304-3894},
  journal      = {JOURNAL OF HAZARDOUS MATERIALS},
  language     = {eng},
  pages        = {238--245},
  title        = {Removal of micropollutants from water in a continuous-flow electrical discharge reactor},
  url          = {http://dx.doi.org/10.1016/j.jhazmat.2018.08.095},
  volume       = {362},
  year         = {2019},
}

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