Surface modification of zero-valent iron nanoparticles by biological active substance-complex tests

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F19%3A00006790" target="_blank" >RIV/46747885:24220/19:00006790 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/19:00006790

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Surface modification of zero-valent iron nanoparticles by biological active substance-complex tests

Popis výsledku v původním jazyce

Chlorinated solvents such as trichloroethene (TCE) are widespread groundwater contaminants. These contaminants can be transformed by combination of abiotic and biotic methods under anaerobic conditions. Nowadays nanoscale zero-valent iron (nZVI) is used for the treatment of chlorinated compounds via its strong reducing property. Biological reductive dechlorination of chlorinated ethenes (CEs) is contributed by dehalorespiration. The influence of nZVI in combination with carboxymethyl cellulose (CMC) and molasses on the specific dehalorespiring microflora and besides the influence of biological surface modification on reactive properties of iron was tested within this study. Groundwater contaminated with CEs was collected from the chemical factory Spolchemie a.s. Batch tests (reactors) with iron and various concentrations of CMC and molasses were performed. The samples for gas chromatography (GC) analyses were taken regularly after defined time period for determination of CEs concentration and physical-chemical parameters were monitored simultaneously. DNA was extracted after filtration of the tested water and used as a template for a real-time PCR amplification. 16S rDNA gene was used as a total bacterial community marker. Specific genes were used for detection of ongoing reductive dehalogenation (vcrA, bvcA, Dre, DHC-RT and Dsb) and to monitor denitrifying and sulphate reducing bacteria (nirK and apsA).

Název v anglickém jazyce

Surface modification of zero-valent iron nanoparticles by biological active substance-complex tests

Popis výsledku anglicky

Chlorinated solvents such as trichloroethene (TCE) are widespread groundwater contaminants. These contaminants can be transformed by combination of abiotic and biotic methods under anaerobic conditions. Nowadays nanoscale zero-valent iron (nZVI) is used for the treatment of chlorinated compounds via its strong reducing property. Biological reductive dechlorination of chlorinated ethenes (CEs) is contributed by dehalorespiration. The influence of nZVI in combination with carboxymethyl cellulose (CMC) and molasses on the specific dehalorespiring microflora and besides the influence of biological surface modification on reactive properties of iron was tested within this study. Groundwater contaminated with CEs was collected from the chemical factory Spolchemie a.s. Batch tests (reactors) with iron and various concentrations of CMC and molasses were performed. The samples for gas chromatography (GC) analyses were taken regularly after defined time period for determination of CEs concentration and physical-chemical parameters were monitored simultaneously. DNA was extracted after filtration of the tested water and used as a template for a real-time PCR amplification. 16S rDNA gene was used as a total bacterial community marker. Specific genes were used for detection of ongoing reductive dehalogenation (vcrA, bvcA, Dre, DHC-RT and Dsb) and to monitor denitrifying and sulphate reducing bacteria (nirK and apsA).

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

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

Projekt

<a href="/cs/project/TF02000064" target="_blank" >TF02000064: Nanomateriály pro sanace kontaminovaných vod</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

NANOCON 2018 - Conference Proceedings, 10th Anniversary International Conference on Nanomaterials - Research and Application2019

ISBN

978-808729489-5

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

260-265

Název nakladatele

TANGER LTD

Místo vydání

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Místo konání akce

Brno

Datum konání akce

1. 1. 2018

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000513131900045