Cyanobacteria control using Cu-based metal organic frameworks derived from waste PET bottles

Youjin Kim, Pandi Kalimuthu, Gwiwoong Nam, Jinho Jung

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Copper sulfate (CuSO4) is actively used to control the proliferation of harmful algal blooms because of its fast and effective killing mechanism. However, its use unintentionally harms innocuous aquatic organisms. Therefore, there is a need to find non-toxic solutions for controlling algal blooms. In this study, Cu-based metal-organic framework (Cu-BDC MOF) chips (ca. 2 × 2 cm) were synthesized using waste polyethylene terephthalate (PET) bottles. The as-synthesized Cu-BDC MOF chips efficiently inhibited the cyanobacteria species Microcystis aeruginosa, which was comparable to the conventional dose of CuSO4 algaecide (1.00 mg L−1). Moreover, unlike the CuSO4 algaecide, Cu-BDC MOF chips did not cause any acute toxicity (48 h) to the water flea Daphnia magna. Both Cu-BDC MOF and Cu2O seemed to be responsible for the generation of reactive oxygen species, which resulted in the aggregation, photosynthesis disruption, and eventually growth inhibition of M. aeruginosa. This study suggests that the environmentally safe Cu-BDC MOF chip is a promising agent to sustainably control harmful algal blooms.

Original languageEnglish
Article number115532
JournalEnvironmental Research
Volume224
DOIs
Publication statusPublished - 2023 May 1

Bibliographical note

Funding Information:
The study was supported by the Basic Science Research Program ( NRF-2021R1A6A1A10045235 ) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education .

Publisher Copyright:
© 2023 Elsevier Inc.

Keywords

  • Algaecide
  • Aquatic toxicity
  • HABs
  • Metal-organic frameworks
  • Plastic waste

ASJC Scopus subject areas

  • Biochemistry
  • General Environmental Science

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