A critical review on application of photocatalysis for toxicity reduction of real wastewaters

Juan José Rueda-Marquez, Irina Levchuk, Pilar Fernández Ibañez, Mika Sillanpää

Research output: Contribution to journalReview articlepeer-review

496 Citations (Scopus)

Abstract

Advanced oxidation processes (AOPs) such as photocatalysis are widely studied for degradation of organic pollutants of contaminants of emerging concern (CECs). However, degradation of organic pollutants leads to formation of by-products, which may be more toxic than parental contaminants. The toxicity of wastewater treated by photocatalysis is topical issue. In this review paper recent studies concerned with photocatalytic detoxification of real industrial and municipal wastewater were assembled and critically discussed. Such issues as challenges for application of photocatalytic wastewater detoxification, feasibility of various toxicity tests, reuse of photocatalysts, cost estimation, etc. were considered. Based on reviewed literature it can be suggested that photocatalysis might not always be a promising treatment method for degradation of organic pollutants in real wastewaters and/or wastewater detoxification from the application point of view.

Original languageEnglish
Article number120694
JournalJournal of Cleaner Production
Volume258
DOIs
Publication statusPublished - 10 Jun 2020
Externally publishedYes

Keywords

  • Advanced oxidation processes (AOP)
  • Bioassays
  • Photocatalysis
  • Real wastewater
  • Toxicity

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Environmental Science
  • Strategy and Management
  • Industrial and Manufacturing Engineering

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