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@article{ART002343475},
author={Anton Zubrik and Marek Matik and Michal Lovás and Katarína Štefušová and Zuzana Danková and Slavomír Hredzák and Miroslava Václavíková and František Bendek and Jaroslav Briančin and Libor Machala and Jiři Pechoušek},
title={One-step microwave synthesis of magnetic biochars with sorption properties},
journal={Carbon Letters},
issn={1976-4251},
year={2018},
volume={26},
number={1},
pages={31-42}

TY - JOUR
AU - Anton Zubrik
AU - Marek Matik
AU - Michal Lovás
AU - Katarína Štefušová
AU - Zuzana Danková
AU - Slavomír Hredzák
AU - Miroslava Václavíková
AU - František Bendek
AU - Jaroslav Briančin
AU - Libor Machala
AU - Jiři Pechoušek
TI - One-step microwave synthesis of magnetic biochars with sorption properties
JO - Carbon Letters
PY - 2018
VL - 26
IS - 1
PB - Korean Carbon Society
SP - 31
EP - 42
SN - 1976-4251
AB - Adsorption is one of the best methods for wastewater purification. The fact that water quality is continuously decreasing requires the development of novel, effective and cost available adsorbents. Herein, a simple procedure for the preparation of a magnetic adsorbent from agricultural waste biomass and ferrofluid has been introduced. Specifically, ferrofluid mixed with wheat straw was directly pyrolyzed either by microwave irradiation (900 W, 30 min) or by conventional heating (550°C, 90 min). Magnetic biochars were characterized by X-ray powder diffraction, Mössbauer spectroscopy, textural analysis and tested as adsorbents of As(V) oxyanion and cationic methylene blue, respectively. Results showed that microwave pyrolysis produced char with high adsorption capacity of As(V) (Qm= 25.6 mg g–1 at pH 4), whereas conventional pyrolysis was not so effective. In comparison to conventional pyrolysis, one-step microwave pyrolysis produced a material with expressive microporosity, having a nine times higher value of specific surface area as well as total pore volume. We assumed that sorption properties are also caused by several iron-bearing composites identified by Mössbauer spectroscopy ([super] paramagnetic Fe2O3, α-Fe, non-stoichiometric Fe3C, γ-Fe2O3, γ-Fe) transformed from nano-maghemite presented in the ferrofluid. Methylene blue was also more easily removed by magnetic biochar prepared by microwaves (Qm=144.9 mg g–1 at pH 10.9) compared to using conventional techniques.
KW - magnetic biochar;microwave pyrolysis;ferrofluid;adsorption;arsenic
DO -
UR -
ER -

Anton Zubrik, Marek Matik, Michal Lovás, Katarína Štefušová, Zuzana Danková, Slavomír Hredzák, Miroslava Václavíková, František Bendek, Jaroslav Briančin, Libor Machala and Jiři Pechoušek. (2018). One-step microwave synthesis of magnetic biochars with sorption properties. Carbon Letters, 26(1), 31-42.

Anton Zubrik, Marek Matik, Michal Lovás, Katarína Štefušová, Zuzana Danková, Slavomír Hredzák, Miroslava Václavíková, František Bendek, Jaroslav Briančin, Libor Machala and Jiři Pechoušek. 2018, "One-step microwave synthesis of magnetic biochars with sorption properties", Carbon Letters, vol.26, no.1 pp.31-42.

Anton Zubrik, Marek Matik, Michal Lovás, Katarína Štefušová, Zuzana Danková, Slavomír Hredzák, Miroslava Václavíková, František Bendek, Jaroslav Briančin, Libor Machala, Jiři Pechoušek "One-step microwave synthesis of magnetic biochars with sorption properties" Carbon Letters 26.1 pp.31-42 (2018) : 31.

Anton Zubrik, Marek Matik, Michal Lovás, Katarína Štefušová, Zuzana Danková, Slavomír Hredzák, Miroslava Václavíková, František Bendek, Jaroslav Briančin, Libor Machala, Jiři Pechoušek. One-step microwave synthesis of magnetic biochars with sorption properties. 2018; 26(1), 31-42.

Anton Zubrik, Marek Matik, Michal Lovás, Katarína Štefušová, Zuzana Danková, Slavomír Hredzák, Miroslava Václavíková, František Bendek, Jaroslav Briančin, Libor Machala and Jiři Pechoušek. "One-step microwave synthesis of magnetic biochars with sorption properties" Carbon Letters 26, no.1 (2018) : 31-42.

Anton Zubrik; Marek Matik; Michal Lovás; Katarína Štefušová; Zuzana Danková; Slavomír Hredzák; Miroslava Václavíková; František Bendek; Jaroslav Briančin; Libor Machala; Jiři Pechoušek. One-step microwave synthesis of magnetic biochars with sorption properties. Carbon Letters, 26(1), 31-42.

Anton Zubrik; Marek Matik; Michal Lovás; Katarína Štefušová; Zuzana Danková; Slavomír Hredzák; Miroslava Václavíková; František Bendek; Jaroslav Briančin; Libor Machala; Jiři Pechoušek. One-step microwave synthesis of magnetic biochars with sorption properties. Carbon Letters. 2018; 26(1) 31-42.

Anton Zubrik, Marek Matik, Michal Lovás, Katarína Štefušová, Zuzana Danková, Slavomír Hredzák, Miroslava Václavíková, František Bendek, Jaroslav Briančin, Libor Machala, Jiři Pechoušek. One-step microwave synthesis of magnetic biochars with sorption properties. 2018; 26(1), 31-42.

Anton Zubrik, Marek Matik, Michal Lovás, Katarína Štefušová, Zuzana Danková, Slavomír Hredzák, Miroslava Václavíková, František Bendek, Jaroslav Briančin, Libor Machala and Jiři Pechoušek. "One-step microwave synthesis of magnetic biochars with sorption properties" Carbon Letters 26, no.1 (2018) : 31-42.