Academic Journal
Bionanomining of copper-based nanoparticles using pre-processed mine tailings as the precursor
| العنوان: | Bionanomining of copper-based nanoparticles using pre-processed mine tailings as the precursor |
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| المؤلفون: | Brandão, Igor Yannick Vasconcellos, Macedo, Erenilda Ferreira de, Silva, Pedro Henrique Barboza de Souza, Batista, Aline Fontana, Petroni, Sérgio Luis Graciano, Gonçalves, Maraisa UNIFESP, Conceição, Katia UNIFESP, Trichês, Eliandra de Sousa UNIFESP, Tada, Dayane Batista UNIFESP, Maass, Danielle UNIFESP |
| المساهمون: | http://lattes.cnpq.br/3431482044015696 |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2023 |
| المجموعة: | Universidade Federal de São Paulo (UNIFESP): Repositório Institucional |
| مصطلحات موضوعية: | Bioreactor, Bionanomining, Cytotoxicity, Antimicrobial activity, Copper-based nanoparticles, Rhodococcus erythropolis |
| الوصف: | The bacterial synthesis of copper nanoparticles 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 ATCC4277 using a preprocessed 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 ◦C, 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 nanoparticles (CuNPs), 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 CuNPs, their antibacterial activity was evaluated against Escherichia coli and their cytotoxicity was evaluated against Murine Embryonic Fibroblast (MEF) cells. The 7-day extract of CuNPs at 0.1 mg mL-1 resulted in 75% of MEF cell viability. In the direct method, the suspension of CuNPs at 0.1 mg mL-1 resulted in 70% of MEF cell viability. Moreover, the CuNPs 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 CuNPs by R. erythropolis using pre-processed mine tailing can be a suitable method to obtain CuNPs from environmental and economical perspectives, resulting in NPs useful for biomedical and photocatalytic applications. ; São Paulo Research Foundation (FAPESP) [grant number #2019/07659-4] ; São Paulo Research Foundation (FAPESP) project number 2019/ 19144-9 ; Coordenação de Aperfeiçoamento de ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | 1-9; application/pdf |
| اللغة: | English |
| تدمد: | 0301-4797 |
| Relation: | Journal of Environmental Management; https://doi.org/10.1016/j.jenvman.2023.117804; Igor Yannick das Neves Vasconcellos Brandão, Erenilda Ferreira de Macedo, Pedro Henrique Barboza de Souza Silva, Aline Fontana Batista, Sérgio Luis Graciano Petroni, Maraisa Gonçalves, Katia Conceição, Eliandra de Sousa Trichês, Dayane Batista Tada, Danielle Maass, Bionanomining of copper-based nanoparticles using pre-processed mine tailings as the precursor, Journal of Environmental Management, Volume 338, 2023, 117804, ISSN 0301-4797, https://doi.org/10.1016/j.jenvman.2023.117804.; https://repositorio.unifesp.br/11600/67348 |
| DOI: | 10.1016/j.jenvman.2023.117804 |
| الاتاحة: | https://doi.org/10.1016/j.jenvman.2023.117804 https://repositorio.unifesp.br/11600/67348 |
| Rights: | Acesso restrito |
| رقم الانضمام: | edsbas.77D6F2CB |
| قاعدة البيانات: | BASE |
| تدمد: | 03014797 |
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| DOI: | 10.1016/j.jenvman.2023.117804 |