Efficient chromium (VI) removal with zirconium oxide-carbon nanotubes via filtration-steam hydrolysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F24%3AN0000033" target="_blank" >RIV/62243136:_____/24:N0000033 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0263876224001618" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0263876224001618</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cherd.2024.03.017" target="_blank" >10.1016/j.cherd.2024.03.017</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Efficient chromium (VI) removal with zirconium oxide-carbon nanotubes via filtration-steam hydrolysis

Popis výsledku v původním jazyce

In this study, carbon nanotubes (CNTs) were modified with hydrated zirconium oxide (ZrO(OH)2) nanoparticles using a filtration-steam hydrolysis method, and were used to remove Cr(VI) ions. The prepared ZrO(OH)2/CNT nanocomposites (NZC) were characterized through SEM, XRD, TEM, and FTIR. The pseudo-second-order and Langmuir models could better describe Cr(VI) adsorption on NZC nanocomposite. The adsorption reached equilibrium within 6 h, exhibiting a monolayer adsorption capacity of 97.39 mg/g as determined by Langmuir fitting. Moreover, NZC exhibited excellent resistance to interference from co-existing anions, including NO3- and Cl-. Increasing the solution pH inhibited the Cr(VI) adsorption on the NZC nanocomposite. The presence of coexisting anions in the solution was found to impede the adsorption of Cr(VI) ions onto NZC, with phosphate ions (PO43-) exhibiting the most pronounced inhibitory effect. According to the XPS analysis and pH effect experiments, the abundant hydroxyl groups of NZC played a crucial role in Cr(VI) adsorption. Compared to most Zrbased adsorbents, the NZC stands out as a highly effective adsorbent, demonstrating superior adsorption amount of Cr(VI). This NZC material holds great promise for effectively removing Cr(VI) from industrial wastewater, highlighting its potential application in the field.

Název v anglickém jazyce

Efficient chromium (VI) removal with zirconium oxide-carbon nanotubes via filtration-steam hydrolysis

Popis výsledku anglicky

In this study, carbon nanotubes (CNTs) were modified with hydrated zirconium oxide (ZrO(OH)2) nanoparticles using a filtration-steam hydrolysis method, and were used to remove Cr(VI) ions. The prepared ZrO(OH)2/CNT nanocomposites (NZC) were characterized through SEM, XRD, TEM, and FTIR. The pseudo-second-order and Langmuir models could better describe Cr(VI) adsorption on NZC nanocomposite. The adsorption reached equilibrium within 6 h, exhibiting a monolayer adsorption capacity of 97.39 mg/g as determined by Langmuir fitting. Moreover, NZC exhibited excellent resistance to interference from co-existing anions, including NO3- and Cl-. Increasing the solution pH inhibited the Cr(VI) adsorption on the NZC nanocomposite. The presence of coexisting anions in the solution was found to impede the adsorption of Cr(VI) ions onto NZC, with phosphate ions (PO43-) exhibiting the most pronounced inhibitory effect. According to the XPS analysis and pH effect experiments, the abundant hydroxyl groups of NZC played a crucial role in Cr(VI) adsorption. Compared to most Zrbased adsorbents, the NZC stands out as a highly effective adsorbent, demonstrating superior adsorption amount of Cr(VI). This NZC material holds great promise for effectively removing Cr(VI) from industrial wastewater, highlighting its potential application in the field.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20400 - Chemical engineering

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Research and Design

ISSN

02638762

e-ISSN

1744-3563

Svazek periodika

2024

Číslo periodika v rámci svazku

204

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

664–672

Kód UT WoS článku

001218174000001

EID výsledku v databázi Scopus

2-s2.0-85189528102