Magnetically-modified natural biogenic iron oxides for organic xenobiotics removal

I. Safarik; J. Filip; K. Horska; M. Nowakova; J. Tucek; M. Safarikova; H. Hashimoto; J. Takada; R. Zboril

doi:10.1007/s13762-013-0455-1

Magnetically-modified natural biogenic iron oxides for organic xenobiotics removal

I. Safarik, J. Filip, K. Horska, M. Nowakova, J. Tucek, M. Safarikova, H. Hashimoto, J. Takada, R. Zboril

Faculty of Engineering

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

Biogenic iron oxides have been collected from a water stream and subsequently magnetically modified using water-based magnetic fluid. Both natural and magnetically modified materials have been characterized in detail using wavelength dispersive X-ray fluorescence spectrometry, X-ray powder diffraction, Mössbauer spectroscopy, electron microscopy and BET surface area measurements. The natural material is composed of 2-line ferrihydrite, forming hollow microtubules—sheaths of Leptothrix ochracea, and detrital components. As a result of the ferrofluid modification, maghemite nanoparticles were identified on the surface of the treated material. The active surface area of the bulk, magnetically-modified sample was 148 m² g⁻¹. The magnetically modified material was tested as inexpensive magnetically responsive adsorbent for the removal of selected organic xenobiotics, namely organic dyes, from aqueous solutions. The observed maximum adsorption capacities ranged between 34.3 and 97.8 mg of dye per 1 g of adsorbent.

Original language	English
Pages (from-to)	673-682
Number of pages	10
Journal	International Journal of Environmental Science and Technology
Volume	12
Issue number	2
DOIs	https://doi.org/10.1007/s13762-013-0455-1
Publication status	Published - Jan 1 2013

Keywords

Biogenic iron oxides
Leptothrix ochracea
Magnetic adsorbents
Magnetic fluid
Xenobiotics

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Agricultural and Biological Sciences(all)

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Safarik, I., Filip, J., Horska, K., Nowakova, M., Tucek, J., Safarikova, M., Hashimoto, H., Takada, J., & Zboril, R. (2013). Magnetically-modified natural biogenic iron oxides for organic xenobiotics removal. International Journal of Environmental Science and Technology, 12(2), 673-682. https://doi.org/10.1007/s13762-013-0455-1

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title = "Magnetically-modified natural biogenic iron oxides for organic xenobiotics removal",

abstract = "Biogenic iron oxides have been collected from a water stream and subsequently magnetically modified using water-based magnetic fluid. Both natural and magnetically modified materials have been characterized in detail using wavelength dispersive X-ray fluorescence spectrometry, X-ray powder diffraction, M{\"o}ssbauer spectroscopy, electron microscopy and BET surface area measurements. The natural material is composed of 2-line ferrihydrite, forming hollow microtubules—sheaths of Leptothrix ochracea, and detrital components. As a result of the ferrofluid modification, maghemite nanoparticles were identified on the surface of the treated material. The active surface area of the bulk, magnetically-modified sample was 148 m2 g−1. The magnetically modified material was tested as inexpensive magnetically responsive adsorbent for the removal of selected organic xenobiotics, namely organic dyes, from aqueous solutions. The observed maximum adsorption capacities ranged between 34.3 and 97.8 mg of dye per 1 g of adsorbent.",

keywords = "Biogenic iron oxides, Leptothrix ochracea, Magnetic adsorbents, Magnetic fluid, Xenobiotics",

author = "I. Safarik and J. Filip and K. Horska and M. Nowakova and J. Tucek and M. Safarikova and H. Hashimoto and J. Takada and R. Zboril",

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AU - Safarik, I.

AU - Filip, J.

AU - Horska, K.

AU - Nowakova, M.

AU - Tucek, J.

AU - Safarikova, M.

AU - Hashimoto, H.

AU - Takada, J.

AU - Zboril, R.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Biogenic iron oxides have been collected from a water stream and subsequently magnetically modified using water-based magnetic fluid. Both natural and magnetically modified materials have been characterized in detail using wavelength dispersive X-ray fluorescence spectrometry, X-ray powder diffraction, Mössbauer spectroscopy, electron microscopy and BET surface area measurements. The natural material is composed of 2-line ferrihydrite, forming hollow microtubules—sheaths of Leptothrix ochracea, and detrital components. As a result of the ferrofluid modification, maghemite nanoparticles were identified on the surface of the treated material. The active surface area of the bulk, magnetically-modified sample was 148 m2 g−1. The magnetically modified material was tested as inexpensive magnetically responsive adsorbent for the removal of selected organic xenobiotics, namely organic dyes, from aqueous solutions. The observed maximum adsorption capacities ranged between 34.3 and 97.8 mg of dye per 1 g of adsorbent.

AB - Biogenic iron oxides have been collected from a water stream and subsequently magnetically modified using water-based magnetic fluid. Both natural and magnetically modified materials have been characterized in detail using wavelength dispersive X-ray fluorescence spectrometry, X-ray powder diffraction, Mössbauer spectroscopy, electron microscopy and BET surface area measurements. The natural material is composed of 2-line ferrihydrite, forming hollow microtubules—sheaths of Leptothrix ochracea, and detrital components. As a result of the ferrofluid modification, maghemite nanoparticles were identified on the surface of the treated material. The active surface area of the bulk, magnetically-modified sample was 148 m2 g−1. The magnetically modified material was tested as inexpensive magnetically responsive adsorbent for the removal of selected organic xenobiotics, namely organic dyes, from aqueous solutions. The observed maximum adsorption capacities ranged between 34.3 and 97.8 mg of dye per 1 g of adsorbent.

KW - Biogenic iron oxides

KW - Leptothrix ochracea

KW - Magnetic adsorbents

KW - Magnetic fluid

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