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Ednei Coelho Tatiana Alves Reis Marycel Cotrim Marcia Rizzutto Benedito Corrêa 《Biotechnology progress》2020,36(5):e30322
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. 相似文献
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Coelho Ednei Reis Tatiana Alves Cotrim Marycel Mullan Thomas K. Renshaw Joanna Rizzutto Márcia Corrêa Benedito 《Biometals》2022,35(2):335-348
BioMetals - Fungi have received particular attention in regards to alternatives for bioremediation of heavy metal contaminated locales. Enzymes produced by filamentous fungi, such as phosphatases,... 相似文献
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Chromium ions phytoaccumulation by three floating aquatic macrophytes from a nutrient medium 总被引:1,自引:0,他引:1
Fernando Rodolfo Espinoza-Quiñones Edson Antonio da Silva Márcia de Almeida Rizzutto Soraya Moreno Palácio Aparecido Nivaldo Módenes Nayara Szymanski Neiva Martin Alexander Dimitrov Kroumov 《World journal of microbiology & biotechnology》2008,24(12):3063-3070
In the present work, the trivalent and hexavalent chromium phytoaccumulation by three living free floating aquatic macrophytes
Salvinia auriculata, Pistia stratiotes, and Eicchornia crassipes was investigated in greenhouse. These plants were grown in hydroponic solutions supplied with non-toxic Cr3+ and Cr6+ chromium concentrations, performing six collections of nutrient media and plants in time from a batch system. The total chromium
concentrations into Cr-doped hydroponic media and dry roots and aerial parts were assayed, by using the Synchrotron radiation
X-ray fluorescence technique. The aquatic plant-based chromium removal data were described by using a nonstructural kinetic
model, obtaining different bioaccumulation rate, ranging from 0.015 to 0.837 l mg−1 d−1. The Cr3+ removal efficiency was about 90%, 50%, and 90% for the E. crassipes, P. stratiotes, and S. auriculata, respectively; while it was rather different for Cr6+ one, with values about 50%, 70%, and 90% for the E. crassipes, P. stratiotes, and S. auriculata. 相似文献
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