• Nga Dinh Thi Hochiminh City University of Natural Resources and Environment
  • Thuy Nhung Dang Thi Hochiminh City University of Natural Resources and Environment
  • Tuan Phan Dinh Hochiminh City University of Natural Resources and Environment
  • Luu Pham Thanh Institute of Tropical Biology
  • Hoang Yen Tran Thi Institute of Tropical Biology
  • Hien Nguyen Quoc Research and Development Center for Radiation Technology



Cu2O, nanoparticles, diatomite, cyanobacteria bloom, Microcystis aeruginosa.


Cu2O nanoparticles (Cu2ONPs) with particle size of ~27.4 nm deposited on diatomite (Cu2ONPs/diatomite), a new low-cost material has been used to investigate growth inhibit, and bloom preventation of cyanobacteria in eutrophic waters. Diatomite collected from natural mines was also used in the experiments. Microcystis aeruginosa strain originated from Bac Lieu shrimp pond was isolated and cultured in Z8 medium.  Experiments were conducted by exposing M. aeruginosa to Cu2ONPs/diatomite and diatomite at concentrations of 0.1, 0.2, and 0.5 g/L for 72 hours and 120 hours. The results showed that the concentration of 0.5 g/L in 120 hours, Cu2ONPs/diatomite was more effective in inhibiting and removing of M. aeruginosa cells than diatomite. Therefore, Cu2ONPs/diatomite could be used as a promising material for removing cyanobacterial bloom in water for aquaculture.


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How to Cite

Dinh Thi, N., Dang Thi, T. N., Phan Dinh, T., Pham Thanh, L., Tran Thi, H. Y., & Nguyen Quoc, H. (2021). Cu2ONPs/DIATOMITE INHIBITS GROWTH AND REMOVAL OF MICROCYSTIS AERUGINOSA. Vietnam Journal of Science and Technology, 59(6).