Application of adsorbents modified by nanoparticels

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F21%3A10248541" target="_blank" >RIV/61989100:27360/21:10248541 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/21:10248541

Výsledek na webu

<a href="https://cnt.vsb.cz/export/sites/cnt/.content/galerie-souboru/Nanomaterials-and-Nanotechnology-in-2021.pdf" target="_blank" >https://cnt.vsb.cz/export/sites/cnt/.content/galerie-souboru/Nanomaterials-and-Nanotechnology-in-2021.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31490/9788024845852" target="_blank" >10.31490/9788024845852</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Application of adsorbents modified by nanoparticels

Popis výsledku v původním jazyce

Phyllosilicates are a promising group of materials since they are native, nontoxic, and applicable in numerous industrial sectors. Phyllosilicates can be used as carriers of photoactive, degradable, antibacterial, or fungicidal nanoparticles. They are efficient adsorbents of non-degradable pollutants due to their (e.g.) high specific surface area, chemical and mechanical stability, various structural and surface properties and higher cation exchange capacity. On the other hand, sorbent separation can be associated with substantial technological problems, mainly when the sorbent particles are of a very small size. However, the adsorbent can be modified by magnetically iron oxide micro/nanoparticles to facilitate removing the adsorbents from the solution - by using a magnet or magnetic field. The magnetically modified materials in this study were prepared from two montmorillonites and Ghassoul (a unique mixture of stevensite and sepiolite) using the microwave-assisted method of magnetic particle preparation. The adsorption of Sr2+ ions from water solution was studied. The experimental data were fitted by adsorption isotherms (Langmuir, Freundlich, and Sips). Results showed that the adsorption could be fitted by the Sips adsorption isotherm and, hence, the ion-exchange mechanism occurred. The presence of magnetic iron particles on the adsorbent surface does not always decrease the maximum adsorption capacity. The adsorption capacity depends on the type of clay and the way of adsorbent preparation.

Název v anglickém jazyce

Application of adsorbents modified by nanoparticels

Popis výsledku anglicky

Phyllosilicates are a promising group of materials since they are native, nontoxic, and applicable in numerous industrial sectors. Phyllosilicates can be used as carriers of photoactive, degradable, antibacterial, or fungicidal nanoparticles. They are efficient adsorbents of non-degradable pollutants due to their (e.g.) high specific surface area, chemical and mechanical stability, various structural and surface properties and higher cation exchange capacity. On the other hand, sorbent separation can be associated with substantial technological problems, mainly when the sorbent particles are of a very small size. However, the adsorbent can be modified by magnetically iron oxide micro/nanoparticles to facilitate removing the adsorbents from the solution - by using a magnet or magnetic field. The magnetically modified materials in this study were prepared from two montmorillonites and Ghassoul (a unique mixture of stevensite and sepiolite) using the microwave-assisted method of magnetic particle preparation. The adsorption of Sr2+ ions from water solution was studied. The experimental data were fitted by adsorption isotherms (Langmuir, Freundlich, and Sips). Results showed that the adsorption could be fitted by the Sips adsorption isotherm and, hence, the ion-exchange mechanism occurred. The presence of magnetic iron particles on the adsorbent surface does not always decrease the maximum adsorption capacity. The adsorption capacity depends on the type of clay and the way of adsorbent preparation.

Druh

C - Kapitola v odborné knize

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF17_048%2F0007399" target="_blank" >EF17_048/0007399: Nové kompozitní materiály pro environmentální aplikace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Nanomaterials and Nanotechnology in 2021

ISBN

978-80-248-4585-2

Počet stran výsledku

10

Strana od-do

127-136

Počet stran knihy

143

Název nakladatele

Vysoká škola báňská - Technická univerzita Ostrava, Fakulta metalurgie a materiálového inženýrství

Místo vydání

Ostrava

Kód UT WoS kapitoly

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