Advanced remediation using nanosized zero-valent iron and electrical current in situ − A comparison with conventional remediation using nanosized zero-valent iron alone

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F21%3A00008891" target="_blank" >RIV/46747885:24620/21:00008891 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2213343721011015" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2213343721011015</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2021.106124" target="_blank" >10.1016/j.jece.2021.106124</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Advanced remediation using nanosized zero-valent iron and electrical current in situ − A comparison with conventional remediation using nanosized zero-valent iron alone

Popis výsledku v původním jazyce

This study presents an advance on the standard in situ reductive remediation technique using nanosized zero valent iron (NZVI). The initial process used a conventional form of NZVI, NANOFER 25S (NANO IRON, s.r.o.), at a site contaminated with chlorinated hydrocarbons (CHC) in 2014. In 2018, levels of contamination at the site were still too high; hence, a second remediation intervention was performed using a cheaper form of NZVI, NANOFER STAR DC (NANO IRON, s.r.o.), accompanied with application of an electrical current (DC). The physical-chemical parameters at the site showed moderate reductive conditions for both techniques. While remediation with NANOFER 25S showed a continuous decrease in NZVI activity over time, application of NANOFER STAR DC DC resulted in a long-term reductive effect, observable as a persistent decrease in CHC concentration and evolution of ethene and ethane dechlorination products. NZVI in the STAR DC DC was still active after around 200 days. Final efficiency of the STAR DC DC method was calculated at 3.7 times higher than the conventional technique using NANOFER 25S only. Laboratory-scale experiments confirmed the field observations, indicating the significantly elevated effectivity of STAR DC DC.

Název v anglickém jazyce

Advanced remediation using nanosized zero-valent iron and electrical current in situ − A comparison with conventional remediation using nanosized zero-valent iron alone

Popis výsledku anglicky

This study presents an advance on the standard in situ reductive remediation technique using nanosized zero valent iron (NZVI). The initial process used a conventional form of NZVI, NANOFER 25S (NANO IRON, s.r.o.), at a site contaminated with chlorinated hydrocarbons (CHC) in 2014. In 2018, levels of contamination at the site were still too high; hence, a second remediation intervention was performed using a cheaper form of NZVI, NANOFER STAR DC (NANO IRON, s.r.o.), accompanied with application of an electrical current (DC). The physical-chemical parameters at the site showed moderate reductive conditions for both techniques. While remediation with NANOFER 25S showed a continuous decrease in NZVI activity over time, application of NANOFER STAR DC DC resulted in a long-term reductive effect, observable as a persistent decrease in CHC concentration and evolution of ethene and ethane dechlorination products. NZVI in the STAR DC DC was still active after around 200 days. Final efficiency of the STAR DC DC method was calculated at 3.7 times higher than the conventional technique using NANOFER 25S only. Laboratory-scale experiments confirmed the field observations, indicating the significantly elevated effectivity of STAR DC DC.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

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

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Environmental Chemical Engineering

ISSN

2213-3437

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000703875300004

EID výsledku v databázi Scopus

2-s2.0-85111569615