TY - JOUR
T1 - Magnetically-modified natural biogenic iron oxides for organic xenobiotics removal
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.
N1 - Publisher Copyright:
© 2013, Islamic Azad University (IAU).
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2013/2
Y1 - 2013/2
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
KW - Xenobiotics
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U2 - 10.1007/s13762-013-0455-1
DO - 10.1007/s13762-013-0455-1
M3 - Article
AN - SCOPUS:84920540209
VL - 12
SP - 673
EP - 682
JO - International Journal of Environmental Science and Technology
JF - International Journal of Environmental Science and Technology
SN - 1735-1472
IS - 2
ER -