Impact of groundwater solutes on the fate and reactivity of nanoscale iron nitride particles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73628802" target="_blank" >RIV/61989592:15640/25:73628802 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2213343725001265?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2213343725001265?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2025.115431" target="_blank" >10.1016/j.jece.2025.115431</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of groundwater solutes on the fate and reactivity of nanoscale iron nitride particles

Popis výsledku v původním jazyce

Partial or full nitriding of nanoscale zero-valent iron (nZVI) particles suppresses their corrosion and enhances their selectivity for chlorinated ethenes. However, the impact of groundwater solutes on the reactive lifetime of FexN-based nanoparticles remains poorly understood. Herein, we aged FexN nanoparticles for 30 days in suspensions containing realistic concentrations of common groundwater solutes and characterized the resulting transformation products. Subsequently, the aged particles were exposed to trichloroethene (TCE) to evaluate reactivity changes under varying water chemistries. Acquired results demonstrate that aged FexN nanoparticles effectively degrade TCE across a range and concentrations of groundwater solutes, including Na+, Ca2+, Mg2+, Cl-, SO4 2- and HCO3-. The primary corrosion products in these solutions were &quot;white rust&quot; and &quot;green rust&quot; minerals. Variations in TCE dechlorination rates were linked to the type and concentration of solutes, pH, and the resultant corrosion products. Notably, TCE degradation was significantly suppressed in the presence of HPO42- and NO3 - ions, with vivianite and magnetite being the dominant corrosion products, respectively. Findings from single salt experiments were validated using two groundwater samples. This study elucidates the complex effects of solutes on FexN corrosion and reactivity, providing valuable insights for predicting the performance of FexNbased materials in groundwater remediation.

Název v anglickém jazyce

Impact of groundwater solutes on the fate and reactivity of nanoscale iron nitride particles

Popis výsledku anglicky

Partial or full nitriding of nanoscale zero-valent iron (nZVI) particles suppresses their corrosion and enhances their selectivity for chlorinated ethenes. However, the impact of groundwater solutes on the reactive lifetime of FexN-based nanoparticles remains poorly understood. Herein, we aged FexN nanoparticles for 30 days in suspensions containing realistic concentrations of common groundwater solutes and characterized the resulting transformation products. Subsequently, the aged particles were exposed to trichloroethene (TCE) to evaluate reactivity changes under varying water chemistries. Acquired results demonstrate that aged FexN nanoparticles effectively degrade TCE across a range and concentrations of groundwater solutes, including Na+, Ca2+, Mg2+, Cl-, SO4 2- and HCO3-. The primary corrosion products in these solutions were &quot;white rust&quot; and &quot;green rust&quot; minerals. Variations in TCE dechlorination rates were linked to the type and concentration of solutes, pH, and the resultant corrosion products. Notably, TCE degradation was significantly suppressed in the presence of HPO42- and NO3 - ions, with vivianite and magnetite being the dominant corrosion products, respectively. Findings from single salt experiments were validated using two groundwater samples. This study elucidates the complex effects of solutes on FexN corrosion and reactivity, providing valuable insights for predicting the performance of FexNbased materials in groundwater remediation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

ISSN

2213-2929

e-ISSN

2213-3437

Svazek periodika

13

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

nestránkováno

Kód UT WoS článku

001410020800001

EID výsledku v databázi Scopus

2-s2.0-85215411809