Ultrasonic treatment of dye chemicals in wastewater: A review

Narae Yang, Byung Moon Jun, Jong Soo Choi, Chang Min Park, Min Jang, Ahjeong Son, Seong Nam Nam, Yeomin Yoon

Research output: Contribution to journalReview articlepeer-review

Abstract

The existence of pollutants, such as toxic organic dye chemicals, in water and wastewater raises concerns as they are inadequately eliminated through conventional water and wastewater treatment methods, including physicochemical and biological processes. Ultrasonic treatment has emerged as an advanced treatment process that has been widely applied to the decomposition of recalcitrant organic contaminants. Ultrasonic treatment has several advantages, including easy operation, sustainability, non-secondary pollutant production, and saving energy. This review examines the elimination of dye chemicals and categorizes them into cationic and anionic dyes based on the existing literature. The objectives include (i) analyzing the primary factors (water quality and ultrasonic conditions) that influence the sonodegradation of dye chemicals and their byproducts during ultrasonication, (ii) assessing the impact of the different sonocatalysts and combined systems (with ozone and ultraviolet) on sonodegradation, and (iii) exploring the characteristics-based removal mechanisms of dyes. In addition, this review proposes areas for future research on ultrasonic treatment of dye chemicals in water and wastewater.

Original languageEnglish
Article number141676
JournalChemosphere
Volume354
DOIs
StatePublished - Apr 2024

Bibliographical note

Publisher Copyright:
© 2024 Elsevier Ltd

Keywords

  • Dye chemicals
  • Sonocatalysts
  • Sonodegradation
  • Wastewater treatment
  • Water treatment

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