Photocatalytic ozonation of monuron over suspended and immobilized TiO2–study of transformation, mineralization and economic feasibility

Gergő Simon, Tamás Gyulavári, K. Hernádi, Milán Molnár, Zsolt Pap, Gábor Veréb, K. Gajda-Schrantz, Máté Náfrádi, Tünde Alapi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The transformation and mineralization of monuron herbicide were investigated by heterogeneous photocatalysis, ozonation, and their combination (photocatalytic ozonation) at various ozone (O3) concentrations (0–20 mg dm‐3 in gas phase), using TiO2 in suspensions and in immobilized form. The applied AOPs were characterized by the transformation and mineralization rate of monuron, the concentration of dissolved O3, and the economic feasibility based on the values of Electrical Energy per Order related to the rate of decrease of monuron concentration and of the total organic carbon content. In the case of photocatalytic ozonation, the transformation and mineralization rate of monuron increased with the increase of O3 concentration. However, there was no significant synergistic effect. Electrical Energy per Order decreased with the increase of O3 concentration, and economical efficiency of the photocatalytic ozonation using TiO2 in suspensions highly exceed that of both ozonation and heterogeneous photocatalysis regarding the value determined for the decrease of total organic carbon content.

Original languageEnglish
Pages (from-to)512-520
Number of pages9
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume356
DOIs
Publication statusPublished - Apr 1 2018

Fingerprint

Ozonization
economics
Economics
Photocatalysis
electric power
Organic carbon
Suspensions
herbicides
carbon
Herbicides
Ozone
ozone
Gases
monuron
vapor phases

Keywords

  • Electric energy per order
  • Monuron
  • Ozone
  • Photocatalysis
  • Photocatalytic ozonation
  • TiO immobilization

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

Cite this

Photocatalytic ozonation of monuron over suspended and immobilized TiO2–study of transformation, mineralization and economic feasibility. / Simon, Gergő; Gyulavári, Tamás; Hernádi, K.; Molnár, Milán; Pap, Zsolt; Veréb, Gábor; Gajda-Schrantz, K.; Náfrádi, Máté; Alapi, Tünde.

In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 356, 01.04.2018, p. 512-520.

Research output: Contribution to journalArticle

Simon, Gergő ; Gyulavári, Tamás ; Hernádi, K. ; Molnár, Milán ; Pap, Zsolt ; Veréb, Gábor ; Gajda-Schrantz, K. ; Náfrádi, Máté ; Alapi, Tünde. / Photocatalytic ozonation of monuron over suspended and immobilized TiO2–study of transformation, mineralization and economic feasibility. In: Journal of Photochemistry and Photobiology A: Chemistry. 2018 ; Vol. 356. pp. 512-520.
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