Magnetic modification of Ghassoul

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F18%3A10240963" target="_blank" >RIV/61989100:27640/18:10240963 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2214785318309520?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2214785318309520?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matpr.2018.05.056" target="_blank" >10.1016/j.matpr.2018.05.056</a>

Result language

angličtina

Original language name

Magnetic modification of Ghassoul

Original language description

Ghassoul, a unique mixture of stevensite and sepiolite, comes from the only known deposit in the world, Jbel Ghassoul in Morocco. In the last decade, Ghassoul attracted interest of Moroccan, Spanish and French materials engineers. Ghassoul was found to be very good adsorbent of metal and organic polutants and it can be also used for the preparation of cordierite ceramics. The presented study is focused on the preparation and study of magnetically modified Ghassoul. The microwave assisted precipitation of iron oxides from water solution using FeSO4.7H2O as precursor was used for preparation magnetic form of Ghassoul. Both the native material and the prepared magnetic Ghassoul were characterized by chemical and phase analysis (rentgen fluorescence analysis, total content of selected elements after acid decomposition in acid mixture was determined by atomic absorption spectroscopy with flame atomization and atomic emission spectrometry with inductively coupled plasma, content of Fe(II) according to the Czech standard CSN 72 2041 and powder X-ray diffraction methods). The magnetic iron oxides on the Ghassoul surface were observed by transmission electron microscope. Saturation magnetization and coercive field were obtained from hysteresis loops measured using the Vibrating Sample Magnetometer. Verification of adsorption properties was carried out with Cd2+ ions. It was proved that the prepared magnetically modified clay minerals contained iron oxides nanoparticles of  Fe2O3 and Fe3O4 which were very strongly bound on the surface. The magnetic measurements have detected that saturation magnetization was approximately two orders higher and coercive field a little bit lower in comparison with the natural clay sample. The results show that the presence of magnetic iron particles on Ghassoul surface did not affect the adsorption properties negatively but make magnetic separation of adsorbent from aqueous solution possible.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Materials Today: Proceedings. Volume 5, Supplement 1

ISBN

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ISSN

2214-7853

e-ISSN

—

Number of pages

7

Pages from-to

45-51

Publisher name

Elsevier

Place of publication

Amsterdam

Event location

Ostrava

Event date

May 22, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000482182400007