Heterogeneous photocatalytic degradation and hydrogen evolution from ethanolamine nuclear wastewater by a liquid phase plasma process

Kyong Hwan Chung, In Soo Park, Hye Jin Bang, Young Kwon Park, Sun Jae Kim, Byung Joo Kim, Sang Chul Jung

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Ethanolamine in a wastewater which is released from nuclear power plant was decomposed using a plasma discharged into the solution directly. Ni-TiO 2 supported on mesoporous materials were employed as a photocatalyst. The photocatalytic reaction using the liquid phase plasma led to a degradation of ethanolamine with hydrogen evolution, simultaneously. The ethanolamine in the wastewater was degraded over 90% on the photocatalytic decomposition reaction by irradiation of liquid phase plasma. The rate of hydrogen evolution increased significantly with Ni incorporation on TiO 2 because the bandgap was reduced with Ni incorporation on TiO 2 . Incorporating Ni on TiO 2 nanocrystallites brought out an improvement of the ethanolamine degradation with hydrogen generation. The rate of hydrogen evolution in the ethanolamine-containing aqueous solution was increased in comparison with that in pure water. Additional hydrogen evolution by the photodecomposition of ethanolamine was attributed to the increasing H 2 production.

Original languageEnglish
Pages (from-to)190-196
Number of pages7
JournalScience of the Total Environment
Volume676
DOIs
StatePublished - 1 Aug 2019

Keywords

  • Ethanolamine degradation
  • Hydrogen evolution
  • Liquid phase plasma
  • Photocatalysts
  • Wastewater

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