Substrate interactions between 4-nitrophenol and 4- nitrotoluene during biodegradation of their mixture

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F16%3A43899398" target="_blank" >RIV/60461373:22330/16:43899398 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/16:00089093

Výsledek na webu

<a href="http://dx.doi.org/10.1080/19443994.2015.1071285" target="_blank" >http://dx.doi.org/10.1080/19443994.2015.1071285</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/19443994.2015.1071285" target="_blank" >10.1080/19443994.2015.1071285</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Substrate interactions between 4-nitrophenol and 4- nitrotoluene during biodegradation of their mixture

Popis výsledku v původním jazyce

Nitroaromatic compounds are toxic and rather recalcitrant pollutants of water and soil. Microbial degradation of the individual nitroaromatic compounds has already been well described in the literature. However, because several compounds often occur in the environment mutually influencing each other's degradation, further research into the biodegradation of their mixtures is still needed. We investigated the degradation of a mixture of 4-nitrophenol (4-NP) and 4-nitrotoluene (4-NT) by a mixed microbial culture immobilized in a continuously operated packed-bed reactor (PBR) and by free suspended cells in shake flasks. Each compound was at first degraded separately, then in a mixture, and their degradation characteristics were compared. When treated separately, 4-NP and 4-NT were degraded with efficiency over 99 and 95%, respectively. When in a mixture, 4-NP was still completely removed from the media but the 4-NT removal efficiency dropped by a half and remained about the same during the whole experiment regardless the increasing 4-NP concentration at the PBR inlet. The shake flask experiments corroborated our finding that 4-NP negatively influenced 4-NT degradation by competitive inhibition and also indirectly on the adaptation level.

Název v anglickém jazyce

Substrate interactions between 4-nitrophenol and 4- nitrotoluene during biodegradation of their mixture

Popis výsledku anglicky

Nitroaromatic compounds are toxic and rather recalcitrant pollutants of water and soil. Microbial degradation of the individual nitroaromatic compounds has already been well described in the literature. However, because several compounds often occur in the environment mutually influencing each other's degradation, further research into the biodegradation of their mixtures is still needed. We investigated the degradation of a mixture of 4-nitrophenol (4-NP) and 4-nitrotoluene (4-NT) by a mixed microbial culture immobilized in a continuously operated packed-bed reactor (PBR) and by free suspended cells in shake flasks. Each compound was at first degraded separately, then in a mixture, and their degradation characteristics were compared. When treated separately, 4-NP and 4-NT were degraded with efficiency over 99 and 95%, respectively. When in a mixture, 4-NP was still completely removed from the media but the 4-NT removal efficiency dropped by a half and remained about the same during the whole experiment regardless the increasing 4-NP concentration at the PBR inlet. The shake flask experiments corroborated our finding that 4-NP negatively influenced 4-NT degradation by competitive inhibition and also indirectly on the adaptation level.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EI - Biotechnologie a bionika

OECD FORD obor

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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

2016

Kód důvěrnosti údajů

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

Název periodika

Desalination and Water Treatment

ISSN

1944-3994

e-ISSN

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Svazek periodika

57

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

2759-2765

Kód UT WoS článku

000367837600044

EID výsledku v databázi Scopus

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