Adsorption properties of fly ash–clay composites from Central European localities: Case study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43929069" target="_blank" >RIV/60461373:22310/24:43929069 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0169131724001431" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169131724001431</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.clay.2024.107395" target="_blank" >10.1016/j.clay.2024.107395</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Adsorption properties of fly ash–clay composites from Central European localities: Case study

Popis výsledku v původním jazyce

In this study, composite adsorbents were prepared as mixtures of aluminosilicates from Central European deposits (clinoptilolite and bentonite) and two types of fly ash from Czech operations that differed in fuel type and combustion temperature. The composites were tested for the adsorption of individual toxic cations (cadmium (Cd2+) and caesium (Cs+)) and anions (arsenate (AsO43−) and chromate (CrO42−)) and for cation–anion co-adsorption in appropriate model solutions under laboratory conditions. The clay–fly ash combinations were more selective for cation adsorption, with an efficiency of about 80% or higher, and unsuitable for anion adsorption, with a maximum efficiency of 30% for AsO43− and &lt;20% for CrO42−. In the co-adsorption systems, the co-adsorption of all tested ions was more efficient than the adsorption of individual ions—by &gt;20%, on average, for Cd2+, Cs+ and AsO43− and by about 6% for Cr. Because the composite sorbents combined the properties of both components, they exhibited variability in active adsorption sites for effective cation and anion binding. The co-adsorption efficiency was up to 50% higher than that of the adsorption of any single kind of ion. © 2024 Elsevier B.V.

Název v anglickém jazyce

Adsorption properties of fly ash–clay composites from Central European localities: Case study

Popis výsledku anglicky

In this study, composite adsorbents were prepared as mixtures of aluminosilicates from Central European deposits (clinoptilolite and bentonite) and two types of fly ash from Czech operations that differed in fuel type and combustion temperature. The composites were tested for the adsorption of individual toxic cations (cadmium (Cd2+) and caesium (Cs+)) and anions (arsenate (AsO43−) and chromate (CrO42−)) and for cation–anion co-adsorption in appropriate model solutions under laboratory conditions. The clay–fly ash combinations were more selective for cation adsorption, with an efficiency of about 80% or higher, and unsuitable for anion adsorption, with a maximum efficiency of 30% for AsO43− and &lt;20% for CrO42−. In the co-adsorption systems, the co-adsorption of all tested ions was more efficient than the adsorption of individual ions—by &gt;20%, on average, for Cd2+, Cs+ and AsO43− and by about 6% for Cr. Because the composite sorbents combined the properties of both components, they exhibited variability in active adsorption sites for effective cation and anion binding. The co-adsorption efficiency was up to 50% higher than that of the adsorption of any single kind of ion. © 2024 Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/TH79020001" target="_blank" >TH79020001: Využití alternativních primárních a druhotných surovin pro výrobu hliníku, hliníkových sloučenin, dalších kovů a produktů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

APPLIED CLAY SCIENCE

ISSN

0169-1317

e-ISSN

—

Svazek periodika

255

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

ZA - Jihoafrická republika

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

001244307900001

EID výsledku v databázi Scopus

2-s2.0-85193221057