Ca treated Palygorskite and Halloysite clay minerals for Ferrous Iron (Fe+2) removal from water systems
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10422557" target="_blank" >RIV/00216208:11320/20:10422557 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.OUNnC8IFp" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.OUNnC8IFp</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.eti.2020.100961" target="_blank" >10.1016/j.eti.2020.100961</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Ca treated Palygorskite and Halloysite clay minerals for Ferrous Iron (Fe+2) removal from water systems
Popis výsledku v původním jazyce
Palygorskite fibers and halloysite nanotubes (HNT) were used for the Fe (II) uptake from aqueous solutions under various experimental conditions. Palygorskite and halloysite samples were characterized using XRD, FTIR, SEM, BET and CEC and then were saturated by exchanging Ca+2 cations. The Ca-Palygorskite (Ca-Pal) and Ca-Halloysite (Ca-Hall) were characterized as well, and applied in batch kinetic experiments series. It was shown that both Ca-treated clay minerals were more efficient adsorbents for the lowest ferrous concentrations removal (5 mg/L), especially when the highest solid: liquid ratio (20 g/L) have been applied, reaching 99.8% and 91.2% removal with Ca-Pal and Ca-Hall respectively, within 10 min at the optimal room temperature (20 +/- 1 degrees C). The pH value affected the adsorption's efficiency, as Ca-Pal was more efficient adsorbent at acidic values (4-6), while Ca-Hall efficiency is positively correlated with pH increase (7 <). Moreover, the competitive ions found to prohibit Ca-Hall capacity for Fe (II), following the order Mn<K<Cu<Zn<Ba<Mg<Na, but Ca-Pal is slightly affected by K<Na=Mn<Zn<Cu<Mg<Ba, highlighting its preference to a Fe cations. According to the thermodynamic analysis the Fe (II) uptake is a physical and spontaneous process, while both Ca-Pal and Ca-Hall fit in Langmuir isotherm instead of Freundlich, indicating monolayer sorption. The exact mechanism of Ca-Pal efficient adsorption was verified and further explained with molecular simulation optimization by Material Studio 4.3. (c) 2020 Elsevier B.V. All rights reserved.
Název v anglickém jazyce
Ca treated Palygorskite and Halloysite clay minerals for Ferrous Iron (Fe+2) removal from water systems
Popis výsledku anglicky
Palygorskite fibers and halloysite nanotubes (HNT) were used for the Fe (II) uptake from aqueous solutions under various experimental conditions. Palygorskite and halloysite samples were characterized using XRD, FTIR, SEM, BET and CEC and then were saturated by exchanging Ca+2 cations. The Ca-Palygorskite (Ca-Pal) and Ca-Halloysite (Ca-Hall) were characterized as well, and applied in batch kinetic experiments series. It was shown that both Ca-treated clay minerals were more efficient adsorbents for the lowest ferrous concentrations removal (5 mg/L), especially when the highest solid: liquid ratio (20 g/L) have been applied, reaching 99.8% and 91.2% removal with Ca-Pal and Ca-Hall respectively, within 10 min at the optimal room temperature (20 +/- 1 degrees C). The pH value affected the adsorption's efficiency, as Ca-Pal was more efficient adsorbent at acidic values (4-6), while Ca-Hall efficiency is positively correlated with pH increase (7 <). Moreover, the competitive ions found to prohibit Ca-Hall capacity for Fe (II), following the order Mn<K<Cu<Zn<Ba<Mg<Na, but Ca-Pal is slightly affected by K<Na=Mn<Zn<Cu<Mg<Ba, highlighting its preference to a Fe cations. According to the thermodynamic analysis the Fe (II) uptake is a physical and spontaneous process, while both Ca-Pal and Ca-Hall fit in Langmuir isotherm instead of Freundlich, indicating monolayer sorption. The exact mechanism of Ca-Pal efficient adsorption was verified and further explained with molecular simulation optimization by Material Studio 4.3. (c) 2020 Elsevier B.V. All rights reserved.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Environmental Technology and Innovation
ISSN
2352-1864
e-ISSN
—
Svazek periodika
19
Číslo periodika v rámci svazku
2020
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
15
Strana od-do
100961
Kód UT WoS článku
000580866600036
EID výsledku v databázi Scopus
2-s2.0-85085995599