Recycling of industrial wastes in the biosynthesis process of magnetite nanoparticles

M. Rahimi, S. Jabbarpour, M. R. Hosseini

Research output: Contribution to journalArticlepeer-review

Abstract

During the past few decades, environmental concerns have led researchers to investigate the profitable methods of preventing environmental deterioration caused by industrialization and urbanization. In such a circumstance, the application of hazardous materials in the production process of nanoparticles has been attracted worldwide attention. This is not only environmentally beneficial but also results in the production of multi-functional nanoparticles. In this regard, in the current study, two different industrial wastes, basic oxygen furnace (BOF) dust and beet vinasse, were used for the green synthesis of magnetite nanoparticles through a straightforward, cost-effective process. The urease-positive bacteria, Bacillus subtilis, was cultivated in a media containing vinasse, and its ability for ammonia production was investigated through six different routes. In this regard, the highest ammonia concentration was acquired when calcium chloride and urea were added to the media at the beginning of cultivation. Then, the extracts containing a maximum ammonia concentration were separated and added to the Fe3+ and Fe2+ solution which was obtained from the acid leaching of BOF dust and sponge iron, respectively, for the biosynthesis of nanoparticles. According to the vibrating sample magnetometer analysis, the produced nanoparticles were superparamagnetic. Also, regarding the transmission electron microscopy images, the mean size of the particles was in the range of 11.6 ± 5.03 nm. Also, the X-ray diffraction and Fourier transform infrared spectroscopy confirmed the efficient biosynthesis of magnetite nanoparticles.

Original languageEnglish
Pages (from-to)9355-9364
Number of pages10
JournalInternational Journal of Environmental Science and Technology
Volume19
DOIs
Publication statusPublished - 5 Apr 2022
Externally publishedYes

Keywords

  • Basic oxygen furnace dust
  • Biosynthesis
  • Magnetite
  • Nanoparticles
  • Vinasse

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Agricultural and Biological Sciences(all)

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