Modeling the competitive effect of ammonium oxidizers and heterotrophs on the degradation of MTBE in a packed bed reactor

Christopher Kevin Waul, Erik Arvin, Jens Ejbye Schmidt

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

A mathematical model was used to study effects on the degradation of methyl tert-butyl ether (MTBE) in a packed bed reactor due to the presence of contaminants such as ammonium, and the mix of benzene, toluene, ethylbenzene and xylenes (BTEX). It was shown that competition between the slower growing MTBE degraders and the co-contaminant oxidizers prevented MTBE's degradation when oxygen was limited. In this event, the co-contaminant oxidizers out-competed the MTBE degraders in the reactor's biofilm. However, if the oxygen supply was sufficient, MTBE would be fully degraded after the zone where the co-contaminants were oxidized. The results of the model further indicate that contradicting findings in the literature about the effects of BTEX on the degradation of MTBE are mainly due to differences in the study methodologies. Effects such as short-term toxicity of BTEX and the lack of steady-state conditions may also add to contradictions among reports.
OriginalsprogDansk
TidsskriftWater Research
Vol/bind42
Udgave nummer12
Sider (fra-til)3098-3108
ISSN0043-1354
DOI
StatusUdgivet - 2008
Udgivet eksterntJa

Citer dette

@article{9eb230d6a93347c396d6525ff22e5516,
title = "Modeling the competitive effect of ammonium oxidizers and heterotrophs on the degradation of MTBE in a packed bed reactor",
abstract = "A mathematical model was used to study effects on the degradation of methyl tert-butyl ether (MTBE) in a packed bed reactor due to the presence of contaminants such as ammonium, and the mix of benzene, toluene, ethylbenzene and xylenes (BTEX). It was shown that competition between the slower growing MTBE degraders and the co-contaminant oxidizers prevented MTBE's degradation when oxygen was limited. In this event, the co-contaminant oxidizers out-competed the MTBE degraders in the reactor's biofilm. However, if the oxygen supply was sufficient, MTBE would be fully degraded after the zone where the co-contaminants were oxidized. The results of the model further indicate that contradicting findings in the literature about the effects of BTEX on the degradation of MTBE are mainly due to differences in the study methodologies. Effects such as short-term toxicity of BTEX and the lack of steady-state conditions may also add to contradictions among reports.",
author = "Waul, {Christopher Kevin} and Erik Arvin and Schmidt, {Jens Ejbye}",
year = "2008",
doi = "10.1016/j.watres.2008.02.030",
language = "Dansk",
volume = "42",
pages = "3098--3108",
journal = "Water Research",
issn = "0043-1354",
publisher = "I W A Publishing",
number = "12",

}

Modeling the competitive effect of ammonium oxidizers and heterotrophs on the degradation of MTBE in a packed bed reactor. / Waul, Christopher Kevin; Arvin, Erik; Schmidt, Jens Ejbye.

I: Water Research, Bind 42, Nr. 12, 2008, s. 3098-3108.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Modeling the competitive effect of ammonium oxidizers and heterotrophs on the degradation of MTBE in a packed bed reactor

AU - Waul, Christopher Kevin

AU - Arvin, Erik

AU - Schmidt, Jens Ejbye

PY - 2008

Y1 - 2008

N2 - A mathematical model was used to study effects on the degradation of methyl tert-butyl ether (MTBE) in a packed bed reactor due to the presence of contaminants such as ammonium, and the mix of benzene, toluene, ethylbenzene and xylenes (BTEX). It was shown that competition between the slower growing MTBE degraders and the co-contaminant oxidizers prevented MTBE's degradation when oxygen was limited. In this event, the co-contaminant oxidizers out-competed the MTBE degraders in the reactor's biofilm. However, if the oxygen supply was sufficient, MTBE would be fully degraded after the zone where the co-contaminants were oxidized. The results of the model further indicate that contradicting findings in the literature about the effects of BTEX on the degradation of MTBE are mainly due to differences in the study methodologies. Effects such as short-term toxicity of BTEX and the lack of steady-state conditions may also add to contradictions among reports.

AB - A mathematical model was used to study effects on the degradation of methyl tert-butyl ether (MTBE) in a packed bed reactor due to the presence of contaminants such as ammonium, and the mix of benzene, toluene, ethylbenzene and xylenes (BTEX). It was shown that competition between the slower growing MTBE degraders and the co-contaminant oxidizers prevented MTBE's degradation when oxygen was limited. In this event, the co-contaminant oxidizers out-competed the MTBE degraders in the reactor's biofilm. However, if the oxygen supply was sufficient, MTBE would be fully degraded after the zone where the co-contaminants were oxidized. The results of the model further indicate that contradicting findings in the literature about the effects of BTEX on the degradation of MTBE are mainly due to differences in the study methodologies. Effects such as short-term toxicity of BTEX and the lack of steady-state conditions may also add to contradictions among reports.

U2 - 10.1016/j.watres.2008.02.030

DO - 10.1016/j.watres.2008.02.030

M3 - Tidsskriftartikel

VL - 42

SP - 3098

EP - 3108

JO - Water Research

JF - Water Research

SN - 0043-1354

IS - 12

ER -