Biosynthesis Scale-Up Process for Magnetic Iron-Oxide Nanoparticles Using Eucalyptus globulus Extract and Their Separation Properties in Lubricant–Water Emulsions

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(5), P. 382 - 382

Published: March 1, 2025

The use of natural organic extracts in nanoparticle synthesis can reduce environmental impacts and reagent costs. With that purpose mind, a novel biosynthesis procedure for the formation magnetic iron-oxide nanoparticles (IONPs) using Eucalyptus globulus extract an aqueous medium has been systematically carried out. First, was optimized various concentrations, prepared by decoction infusion methods, yielded IONPs with sizes from 4 to 9 nm. optimum concentration found at 5% w/v, where reaction time ammonium hydroxide amount were lowest all samples. This tested, including replicated samples, scale-up process, total mass 70 g. It Rietveld electron microscopy analyses structural morphological properties, such as crystalline particle (9 nm), are equivalent when scaling process. 57Fe Mössbauer spectroscopy results indicated Fe ions atomically ordered trivalent state corroborating X-ray diffraction. Magnetic analysis showed sample exhibited ferrimagnetic-like behavior suitable remediation performance (55 emu g-1). eucalyptus functionalization demonstrated thermogravimetric measurements, whereas colloidal supported stability suspensions pH = 7 (zeta potential > -20 mV). kinetic adsorption fast 40 min remarkable removal efficiency 96% lubricant water (emulsion systems). infrared confirmed presence chemical groups even after experiments. These suggest be recovered future sustainable processes.

Language: Английский

Synergetic interaction of Fe3O4 nanoparticles and activated carbon to mitigate inhibition effect of 4-nitrophenol on biogas recovery from petroleum sludge

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107564 - 107564

Published: April 1, 2025

Language: Английский