Design and Evaluation of a Continuous Photocatalytic Ozonation Reactor: Application on the Degradation of Amido Black 10B

Dalanda Hamdi, Lobna Mansouri, Yuri Park, Varsha Srivastava, Mika Sillanpaa, Latifa Bousselmi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A continuous photocatalytic ozonation reactor was developed at a laboratory scale for wastewater treatment. It was evaluated by using Amido Black (AB) in aqueous solution as a model pollutant. The TiO2 nano-catalysts presented as rutile phase were coated on stainless steel grids by the atomic layer deposition technique (ALD). The efficiency of ozonation (O3), photolytic ozonation (O3/UV), and combined photocatalytic ozonation process (TiO2/UV/O3) has been investigated and compared for AB removal. The effects of the initial dye concentration, pH, and radical scavenger (tert-butanol) have been examined using the designed reactor. Under the optimal operating parameters (C0 = 300 mg L-1, pH = 9 and ozone dose = 22 mg min-1), the results showed that about 64% of the initial TOC and 100% of AB color removal (at a concentration of 300 mg L-1) were achieved within 30 min. The overall reaction pseudo-first-order rate was significantly enhanced using the O3/UV/TiO2 process (kapp = 0.663 min-1), which allows achieving 100% of color removal in comparison with single ozonation (kapp = 0.589 min-1) and photolytic ozonation (kapp = 0.438 min-1) after 30 min of reaction time. Under the optimal conditions, the O3/UV/TiO2 oxidation process was the most effective process for AB removal from water.

Original languageEnglish
Title of host publicationRecent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (3rd Edition) - Proceedings of 3rd Euro Mediterranean Conference for Environmental Integration, EMCEI-3 2021
EditorsMohamed Ksibi, Olfa Hentati, Arturo Sousa, Sandeep Panda, Ahmed M. El-Kenawy, Abdelazim Negm, Achraf Ghorbal, Jesus Rodrigo-Comino, José Lopes Velho, Nicola Perilli
PublisherSpringer Nature
Pages73-75
Number of pages3
ISBN (Print)9783031439216
DOIs
Publication statusPublished - 2024
Event3rd Euro-Mediterranean Conference for Environmental Integration, EMCEI 2021 - Sousse, Tunisia
Duration: 10 Jun 202113 Jun 2021

Publication series

NameAdvances in Science, Technology and Innovation
ISSN (Print)2522-8714
ISSN (Electronic)2522-8722

Conference

Conference3rd Euro-Mediterranean Conference for Environmental Integration, EMCEI 2021
Country/TerritoryTunisia
CitySousse
Period10/06/2113/06/21

Keywords

  • Amido Black
  • Continuous reactor
  • Ozonation
  • Photocatalysis
  • TiO

ASJC Scopus subject areas

  • Architecture
  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment

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