Bioremediation of water contaminated with uranium using Penicillium piscarium
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Biotechnology Progress
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Penicillium piscarium can be indicated as promising in the treatment of sites contaminated
with uranium. Thus, this research aimed to analyze the P. piscarium dead biomass
in uranium biosorption. This fungus was previously isolated from a highly
contaminated uranium mine located in Brazil. Biosorption tests were carried out at
pH 3.5 and 5.5 in solutions contaminated with concentrations of 1 to 100 mg/L of
uranium nitrate. Our results showed that the dead biomass of P. piscarium was able
to remove between 93.2 and 97.5% uranium from solutions at pH 3.5, at the end of
the experiment, the pH of the solution increased to values above 5.6. Regarding the
experiments carried out in solutions with pH 5.5, the dead biomass of the fungus
was also able to remove between 38 and 92% uranium from the solution, at the end
of the experiment, the pH of the solution increased to levels above 6.5. The analysis
of electron microscopy, Energy-dispersive spectroscopy, and X-ray fluorescence
demonstrated the high concentration of uranium precipitated on the surface of the
fungal biomass. These results were impressive and demonstrate that the dead biomass
of P. piscarium can be an important alternative to conventional processes for
treating water contaminated with heavy metals, and we hope that these ecofriendly,
inexpensive, and effective technologies be encouraged for the safe discharge of
water from industrial activities.
Como referenciar
COELHO, EDNEI; REIS, TATIANA A.; COTRIM, MARYCEL; RIZZUTTO, MARCIA; CORREA, BENEDITO. Bioremediation of water contaminated with uranium using Penicillium piscarium. Biotechnology Progress, v. 36, n. 5, p. 1-8, 2020. DOI: 10.1002/btpr.3032. Disponível em: http://200.136.52.105/handle/123456789/31594. Acesso em: 20 Mar 2026.
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