Fate of N-nitrosomorpholine in an anaerobic aquifer used for managed aquifer recharge: A column study

M.M. Pitoi, Bradley Patterson, A.J. Furness, T.P. Bastow, Allan Mckinley

Research output: Contribution to journalArticle

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Abstract

The fate of N-nitrosomorpholine (NMOR) was evaluated at microgram and nanogram per litre concentrations. Experiments were undertaken to simulate the passage of groundwater contaminants through a deep anaerobic pyritic aquifer system, as part of a managed aquifer recharge (MAR) strategy. Sorption studies demonstrated the high mobility of NMOR in the Leederville aquifer system, with retardation coefficients between 1.2 and 1.6. Degradation studies from a 351 day column experiment and a 506 day stop-flow column experiment showed an anaerobic biologically induced reductive degradation process which followed first order kinetics. A biological lag-time of less than 3 months and a transient accumulation of morpholine (MOR) were also noted during the degradation. Comparable half-life degradation rates of 40-45 days were observed over three orders of magnitude in concentration (200 ng L-1 to 650 mu g L-1). An inhibitory effect on microorganism responsible to the biodegradation of NMOR at 650 mu g L-1 or a threshold effect at 200 ng L-1 was not observed during these experiments. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)2550-2560
JournalWater Research
Volume45
DOIs
Publication statusPublished - 2011

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Aquifers
recharge
aquifer
Degradation
degradation
experiment
Experiments
Biodegradation
Microorganisms
half life
Sorption
Groundwater
biodegradation
sorption
microorganism
Impurities
kinetics
Kinetics
groundwater
pollutant

Cite this

Pitoi, M.M. ; Patterson, Bradley ; Furness, A.J. ; Bastow, T.P. ; Mckinley, Allan. / Fate of N-nitrosomorpholine in an anaerobic aquifer used for managed aquifer recharge: A column study. In: Water Research. 2011 ; Vol. 45. pp. 2550-2560.
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abstract = "The fate of N-nitrosomorpholine (NMOR) was evaluated at microgram and nanogram per litre concentrations. Experiments were undertaken to simulate the passage of groundwater contaminants through a deep anaerobic pyritic aquifer system, as part of a managed aquifer recharge (MAR) strategy. Sorption studies demonstrated the high mobility of NMOR in the Leederville aquifer system, with retardation coefficients between 1.2 and 1.6. Degradation studies from a 351 day column experiment and a 506 day stop-flow column experiment showed an anaerobic biologically induced reductive degradation process which followed first order kinetics. A biological lag-time of less than 3 months and a transient accumulation of morpholine (MOR) were also noted during the degradation. Comparable half-life degradation rates of 40-45 days were observed over three orders of magnitude in concentration (200 ng L-1 to 650 mu g L-1). An inhibitory effect on microorganism responsible to the biodegradation of NMOR at 650 mu g L-1 or a threshold effect at 200 ng L-1 was not observed during these experiments. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.",
author = "M.M. Pitoi and Bradley Patterson and A.J. Furness and T.P. Bastow and Allan Mckinley",
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Fate of N-nitrosomorpholine in an anaerobic aquifer used for managed aquifer recharge: A column study. / Pitoi, M.M.; Patterson, Bradley; Furness, A.J.; Bastow, T.P.; Mckinley, Allan.

In: Water Research, Vol. 45, 2011, p. 2550-2560.

Research output: Contribution to journalArticle

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T1 - Fate of N-nitrosomorpholine in an anaerobic aquifer used for managed aquifer recharge: A column study

AU - Pitoi, M.M.

AU - Patterson, Bradley

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AU - Mckinley, Allan

PY - 2011

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AB - The fate of N-nitrosomorpholine (NMOR) was evaluated at microgram and nanogram per litre concentrations. Experiments were undertaken to simulate the passage of groundwater contaminants through a deep anaerobic pyritic aquifer system, as part of a managed aquifer recharge (MAR) strategy. Sorption studies demonstrated the high mobility of NMOR in the Leederville aquifer system, with retardation coefficients between 1.2 and 1.6. Degradation studies from a 351 day column experiment and a 506 day stop-flow column experiment showed an anaerobic biologically induced reductive degradation process which followed first order kinetics. A biological lag-time of less than 3 months and a transient accumulation of morpholine (MOR) were also noted during the degradation. Comparable half-life degradation rates of 40-45 days were observed over three orders of magnitude in concentration (200 ng L-1 to 650 mu g L-1). An inhibitory effect on microorganism responsible to the biodegradation of NMOR at 650 mu g L-1 or a threshold effect at 200 ng L-1 was not observed during these experiments. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.

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DO - 10.1016/j.watres.2011.02.018

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