Oxidation of reactive azo-dyes with pulsed corona discharge: Surface reaction enhancement

Liina Onga, Iakov Kornev, Sergei Preis

Research output: Contribution to journalArticlepeer-review

Abstract

Emissions of textile dyes result in biological hazard. The technology response to the problem of textile dyes suffers unaffordable costs. Application of pulsed corona discharge (PCD) to azo-dyes oxidation requires establishing operation conditions. Experimental studies in oxidation of reactive blue RB4 and RB19 were undertaken with variation of pulse, temperature, electrolyte and surfactant parameters. Application of PCD demonstrated dyes removed at high energy efficiency, up to 340–360 g kW−1 h−1 in presence of a surfactant. Sodium sulphate and chloride reduced RBs’ oxidation efficiencies equally in respect to conductivity with no electrolysis observed. The negative effect of elevated temperature was quantified.

Original languageEnglish
Article number103420
JournalJournal of Electrostatics
Volume103
DOIs
Publication statusPublished - Jan 2020

Keywords

  • Advanced oxidation process
  • Electric discharge
  • Lauryl sulphate
  • Ozone
  • Plasma
  • Textile wastewaters

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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