Removal and desorption of chromium in synthetic effluent by a mixed culture in a bioreactor with a magnetic field

Dias, Roseli Mendonça; Silva, Jessica G.; Cardoso, Vicelma Luiz; Resende, Miriam Maria de

doi:10.1016/j.jes.2020.01.026

Cited by 9 publications

(1 citation statement)

References 21 publications

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“…Recent research has presented evidence indicating the beneficial impact of magnetic fields on wastewater treatment. Magnetic fields have also been examined in terms of their potential to safeguard human health [17].…”

Section: Introductionmentioning

confidence: 99%

New process for the treatment of polluted water using the coupling of nanoparticles (Fe3O4) and intense magnetic system

Tlili,

Elaoud,

Asses

et al. 2023

emergent mater.

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The aim of this study is to reduce the indicators of the amount of oxidizable pollutants present in polluted water, using magnetite Fe3O4 nanoparticles (MNPs) as adsorbents in combination with a high intensity magnet. The MNPs used as adsorbents were synthesised by coprecipitation method and analyzed by Transmission-Electron-Microscopy (TEM), scanning electron microscopy (SEM), X-ray Diffraction Analysis (XRD), Fourier transform infrared spectroscopy (FTIR), surface area analysis (BET) and Thermo-Gravimetric-Analysis (TGA). The performance on the reduction efficiency of the contaminated water was investigated under different conditions: pH (4-9), adsorbent masses (0.5 g/L -1.5 g/L), contact times (15-90min), and stirring rates (50-300 rpm). The nanoparticles produced by co-precipitation showed a smaller size than the other techniques (10 nm). The optimum results of the treatment with Magnetite indicate the reduction conditions: contact time of 50 minutes, pH of 8, mass of magnetite of 1 g/l and stirring speed of 200 rpm. A use with a coupling of nanoparticles and an intense magnetic field (1T) generates better treatments up to 85% COD and 86% BOD5.

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Section: Introductionmentioning

confidence: 99%