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@article{1308672,
author = {Karlová, Pavlína and Gelbíčová, Tereza and Sedláček, Ivo},
article_number = {6},
doi = {http://dx.doi.org/10.1080/19443994.2015.1071285},
keywords = {biodegradation; 4-nitrophenol; 4-nitrotoluene; waste water treatment},
language = {eng},
issn = {1944-3994},
journal = {Desalination and Water Treatment},
title = {Substrate interactions between 4-nitrophenol and 4-nitrotoluene during biodegradation of their mixture},
volume = {57},
year = {2016}
}
TY - JOUR
ID - 1308672
AU - Karlová, Pavlína - Gelbíčová, Tereza - Sedláček, Ivo
PY - 2016
TI - Substrate interactions between 4-nitrophenol and 4-nitrotoluene during biodegradation of their mixture
JF - Desalination and Water Treatment
VL - 57
IS - 6
SP - 2759-2765
EP - 2759-2765
SN - 19443994
KW - biodegradation
KW - 4-nitrophenol
KW - 4-nitrotoluene
KW - waste water treatment
N2 - 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.
ER -
KARLOVÁ, Pavlína, Tereza GELBÍČOVÁ and Ivo SEDLÁČEK. Substrate interactions between 4-nitrophenol and 4-nitrotoluene during biodegradation of their mixture. \textit{Desalination and Water Treatment}. vol.~57, No~6, p.~2759-2765. ISSN~1944-3994. doi:10.1080/19443994.2015.1071285. 2016.
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