> Details

das Neves Vasconcellos Brandão, Igor Yannick [Author]; Ferreira de Macedo, Erenilda [Author]; Barboza de Souza Silva, Pedro Henrique [Author]; Fontana Batista, Aline [Author]; Graciano Petroni, Sérgio Luis [Author]; Gonçalves, Maraisa [Author]; Conceição, Katia [Author]; de Sousa Trichês, Eliandra [Author]; Batista Tada, Dayane [Author]; Maass, Danielle [Author]

Bionanomining of Copper-Based Nanoparticles Using Pre-Processed Mineral Tailings as Precursor

Reference
management

Bookmarks

Remove from
bookmarks

Share this on Whatsapp

Close

Bookmarks



You can manage bookmarks using lists, please log in to your user account for this.
  • Media type: E-Book
  • Title: Bionanomining of Copper-Based Nanoparticles Using Pre-Processed Mineral Tailings as Precursor
  • Contributor: das Neves Vasconcellos Brandão, Igor Yannick [VerfasserIn]; Ferreira de Macedo, Erenilda [VerfasserIn]; Barboza de Souza Silva, Pedro Henrique [VerfasserIn]; Fontana Batista, Aline [VerfasserIn]; Graciano Petroni, Sérgio Luis [VerfasserIn]; Gonçalves, Maraisa [VerfasserIn]; Conceição, Katia [VerfasserIn]; de Sousa Trichês, Eliandra [VerfasserIn]; Batista Tada, Dayane [VerfasserIn]; Maass, Danielle [VerfasserIn]
  • imprint: [S.l.]: SSRN, 2023
  • Extent: 1 Online-Ressource (35 p)
  • Language: English
  • DOI: 10.2139/ssrn.4358509
  • Identifier:
  • Keywords: biosynthesis ; Copper ore ; Cytotoxicity ; antimicrobial activity ; copper-based nanoparticles ; Rhodococcus erythropolis
  • Origination:
  • Footnote:
  • Description: The bacterial synthesis of copper nanoparticles (CuNPs) emerges as an eco-friendly alternative to conventional techniques since it comprises a single-step and bottom-up approach, which leads to stable metal nanoparticles. In this paper, we studied the biosynthesis of Cu-based nanoparticles by Rhodococcus erythropolis ATCC 4277 using a pre-processed mining tailing as a precursor. The influence of pulp density and stirring rate on particle size was evaluated using a factor-at-time experimental design. The experiments were carried out in a stirred tank bioreactor for 24 h at 25 ºC, wherein 5% (v/v) of bacterial inoculum was employed. The O2 flow rate was maintained at 1.0 L.min-1 and the pH at 7.0. Copper-based nanoparticles, with an average hydrodynamic diameter of 21 ± 1 nm, were synthesized using 25 g.L-1 of mining tailing and a stirring rate of 250 rpm. Aiming to visualize some possible biomedical applications of the as-synthesized Cu-based NPs, their antibacterial activity was evaluated against Escherichia coli and their cytotoxicity was evaluated against Murine Embryonic Fibroblast (MEF) cells. The 7- day extract of Cu-based NPs at 0.1 mg.mL-1 resulted in 75% of MEF cell viability. In the direct method, the suspension of Cu-based NPs at 0.1 mg.mL-1 resulted in 70% of MEF cell viability. Moreover, the Cu-based NPs at 0.1 mg.mL-1 inhibited 60% of E. coli growth. Furthermore, the NPs were evaluated regarding their photocatalytic activity by monitoring the oxidation of methylene blue (MB) dye. The CuNPs synthesized showed rapid oxidation of MB dye, with the degradation of approximately 65% of dye content in 4 h. These results show that the biosynthesis of Cu-based NPs by R. erythropolis using pre-processed mining tailing can be a suitable method to obtain CuNPs from environmental and economical perspectives, resulting in NPs useful for biomedical and photocatalytic applications
  • Access State: Open Access