Fabrication of nanocomposite zeolite granules for cadmium stabilization in contaminated soils

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F25%3A00637573" target="_blank" >RIV/67985831:_____/25:00637573 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.tandfonline.com/doi/full/10.1080/26395940.2025.2522282" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/26395940.2025.2522282</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/26395940.2025.2522282" target="_blank" >10.1080/26395940.2025.2522282</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fabrication of nanocomposite zeolite granules for cadmium stabilization in contaminated soils

Popis výsledku v původním jazyce

Cadmium contamination of soil poses significant environmental and public health risks. Among the techniques used for remediation, the chemical stabilization of heavy metals using mineral amendments shows promise. Composite zeolite granules were synthesized through the in situ formation of a manganese dioxide phase onto the surface of natural zeolite granules (1–2 mm). Scanning electron microscopy and X-ray diffraction analyses confirmed the formation of the MnO2/sub. phase, which was identified as c-disordered hexagonal birnessite. The adsorption of cadmium onto natural and composite zeolite samples was investigated using two experimental setups. The first setup involved studies in a single-component cadmium solution, while the second setup used a multicomponent ‘soil solution’ prepared by equilibrating Cd-contaminated soil with water for one month. Batch adsorption experiments revealed that the adsorption of both materials could be best described by a pseudo-second order kinetic model. The maximum Cd adsorption capacities, as determined by the Langmuir model, were found to be 12.96 mg/g for natural zeolite and 16.09 mg/g for composite zeolite. In a multicomponent ‘soil solution’ with elevated concentrations of Cd, Pb, and Zn (0.07, 0.04, and 3.67 mg/L, respectively), the composite zeolite granules demonstrated superior Cd adsorption efficiency compared to the natural zeolite (100% and 43%, respectively). Furthermore, both materials showed high zinc adsorption efficiencies (~98%). These results highlight the potential of composite zeolite granules as an effective mineral amendment for the stabilization of heavy metals in contaminated soils.

Název v anglickém jazyce

Fabrication of nanocomposite zeolite granules for cadmium stabilization in contaminated soils

Popis výsledku anglicky

Cadmium contamination of soil poses significant environmental and public health risks. Among the techniques used for remediation, the chemical stabilization of heavy metals using mineral amendments shows promise. Composite zeolite granules were synthesized through the in situ formation of a manganese dioxide phase onto the surface of natural zeolite granules (1–2 mm). Scanning electron microscopy and X-ray diffraction analyses confirmed the formation of the MnO2/sub. phase, which was identified as c-disordered hexagonal birnessite. The adsorption of cadmium onto natural and composite zeolite samples was investigated using two experimental setups. The first setup involved studies in a single-component cadmium solution, while the second setup used a multicomponent ‘soil solution’ prepared by equilibrating Cd-contaminated soil with water for one month. Batch adsorption experiments revealed that the adsorption of both materials could be best described by a pseudo-second order kinetic model. The maximum Cd adsorption capacities, as determined by the Langmuir model, were found to be 12.96 mg/g for natural zeolite and 16.09 mg/g for composite zeolite. In a multicomponent ‘soil solution’ with elevated concentrations of Cd, Pb, and Zn (0.07, 0.04, and 3.67 mg/L, respectively), the composite zeolite granules demonstrated superior Cd adsorption efficiency compared to the natural zeolite (100% and 43%, respectively). Furthermore, both materials showed high zinc adsorption efficiencies (~98%). These results highlight the potential of composite zeolite granules as an effective mineral amendment for the stabilization of heavy metals in contaminated soils.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Environmental Pollutants and Bioavailability

ISSN

2639-5932

e-ISSN

2639-5940

Svazek periodika

37

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

2522282

Kód UT WoS článku

001518195600001

EID výsledku v databázi Scopus

2-s2.0-105009476261