Assessing the transport of pharmaceutical compounds in a layered aquifer discharging to a stream

Nicola Balbarini*, Majken Frederiksen, Vinni Kampman Rønde, Ingelise Møller, Anne Thobo Sonne, Ursula S. McKnight, Jørn Kristian Pedersen, Philip John Binning, Poul Løgstrup Bjerg

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A groundwater plume containing high concentrations of pharmaceutical compounds, mainly sulfonamides, barbiturates and ethyl urethane, in addition to chlorinated ethenes and benzene was investigated. The contamination originating from a former pharmaceutical industry discharges into a multilayered aquifer system and a downgradient stream. In this study, geological and hydrogeological data were integrated into a numerical flow model to examine identified trends using statistical approaches, including principle component analysis and hierarchal cluster analysis. A joint interpretation of the groundwater flow paths and contaminant concentrations in the different compartments (i.e. groundwater and hyporheic zone) provided insight on the transport processes of the different contaminant plumes to the stream. The analysis of historical groundwater concentrations of pharmaceutical compounds at the site suggested these compounds are slowly degrading The pharmaceutical compounds migrate in both a deep semi-confined aquifer, as well as in the shallow unconfined aquifer, and enter the stream along a 2 km stretch. This contrasted with the chlorinated ethenes, which mainly discharge to the stream as a focused plume from the unconfined aquifer. The integrated approach developed here, combining groundwater flow modelling and statistical analyses of the contaminant concentration data collected in groundwater and the hyporheic zone, lead to an improved understanding of the observed distribution of contaminants in the unconfined and semi-confined aquifers, and thus to their discharge to the stream. This approach is particularly relevant for large and long-lasting contaminant sources and plumes, such as abandoned landfills and industrial production sites, where field investigations may be very expensive.
Original languageEnglish
JournalGround Water
ISSN0017-467X
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • Pharmaceutical plume
  • Groundwater-surface water interaction
  • Integrated approach
  • Groundwater modelling
  • Principal component analyses and hierarchical cluster analysis
  • Chlorinated ethenes

Cite this

Balbarini, Nicola ; Frederiksen, Majken ; Rønde, Vinni Kampman ; Møller, Ingelise ; Sonne, Anne Thobo ; McKnight, Ursula S. ; Pedersen, Jørn Kristian ; Binning, Philip John ; Bjerg, Poul Løgstrup. / Assessing the transport of pharmaceutical compounds in a layered aquifer discharging to a stream. In: Ground Water. 2020.
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abstract = "A groundwater plume containing high concentrations of pharmaceutical compounds, mainly sulfonamides, barbiturates and ethyl urethane, in addition to chlorinated ethenes and benzene was investigated. The contamination originating from a former pharmaceutical industry discharges into a multilayered aquifer system and a downgradient stream. In this study, geological and hydrogeological data were integrated into a numerical flow model to examine identified trends using statistical approaches, including principle component analysis and hierarchal cluster analysis. A joint interpretation of the groundwater flow paths and contaminant concentrations in the different compartments (i.e. groundwater and hyporheic zone) provided insight on the transport processes of the different contaminant plumes to the stream. The analysis of historical groundwater concentrations of pharmaceutical compounds at the site suggested these compounds are slowly degrading The pharmaceutical compounds migrate in both a deep semi-confined aquifer, as well as in the shallow unconfined aquifer, and enter the stream along a 2 km stretch. This contrasted with the chlorinated ethenes, which mainly discharge to the stream as a focused plume from the unconfined aquifer. The integrated approach developed here, combining groundwater flow modelling and statistical analyses of the contaminant concentration data collected in groundwater and the hyporheic zone, lead to an improved understanding of the observed distribution of contaminants in the unconfined and semi-confined aquifers, and thus to their discharge to the stream. This approach is particularly relevant for large and long-lasting contaminant sources and plumes, such as abandoned landfills and industrial production sites, where field investigations may be very expensive.",
keywords = "Pharmaceutical plume, Groundwater-surface water interaction, Integrated approach, Groundwater modelling, Principal component analyses and hierarchical cluster analysis, Chlorinated ethenes",
author = "Nicola Balbarini and Majken Frederiksen and R{\o}nde, {Vinni Kampman} and Ingelise M{\o}ller and Sonne, {Anne Thobo} and McKnight, {Ursula S.} and Pedersen, {J{\o}rn Kristian} and Binning, {Philip John} and Bjerg, {Poul L{\o}gstrup}",
year = "2020",
doi = "10.1111/gwat.12904",
language = "English",
journal = "Ground Water",
issn = "0017-467X",
publisher = "Wiley-Blackwell",

}

Assessing the transport of pharmaceutical compounds in a layered aquifer discharging to a stream. / Balbarini, Nicola; Frederiksen, Majken; Rønde, Vinni Kampman; Møller, Ingelise; Sonne, Anne Thobo; McKnight, Ursula S.; Pedersen, Jørn Kristian; Binning, Philip John; Bjerg, Poul Løgstrup.

In: Ground Water, 2020.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Assessing the transport of pharmaceutical compounds in a layered aquifer discharging to a stream

AU - Balbarini, Nicola

AU - Frederiksen, Majken

AU - Rønde, Vinni Kampman

AU - Møller, Ingelise

AU - Sonne, Anne Thobo

AU - McKnight, Ursula S.

AU - Pedersen, Jørn Kristian

AU - Binning, Philip John

AU - Bjerg, Poul Løgstrup

PY - 2020

Y1 - 2020

N2 - A groundwater plume containing high concentrations of pharmaceutical compounds, mainly sulfonamides, barbiturates and ethyl urethane, in addition to chlorinated ethenes and benzene was investigated. The contamination originating from a former pharmaceutical industry discharges into a multilayered aquifer system and a downgradient stream. In this study, geological and hydrogeological data were integrated into a numerical flow model to examine identified trends using statistical approaches, including principle component analysis and hierarchal cluster analysis. A joint interpretation of the groundwater flow paths and contaminant concentrations in the different compartments (i.e. groundwater and hyporheic zone) provided insight on the transport processes of the different contaminant plumes to the stream. The analysis of historical groundwater concentrations of pharmaceutical compounds at the site suggested these compounds are slowly degrading The pharmaceutical compounds migrate in both a deep semi-confined aquifer, as well as in the shallow unconfined aquifer, and enter the stream along a 2 km stretch. This contrasted with the chlorinated ethenes, which mainly discharge to the stream as a focused plume from the unconfined aquifer. The integrated approach developed here, combining groundwater flow modelling and statistical analyses of the contaminant concentration data collected in groundwater and the hyporheic zone, lead to an improved understanding of the observed distribution of contaminants in the unconfined and semi-confined aquifers, and thus to their discharge to the stream. This approach is particularly relevant for large and long-lasting contaminant sources and plumes, such as abandoned landfills and industrial production sites, where field investigations may be very expensive.

AB - A groundwater plume containing high concentrations of pharmaceutical compounds, mainly sulfonamides, barbiturates and ethyl urethane, in addition to chlorinated ethenes and benzene was investigated. The contamination originating from a former pharmaceutical industry discharges into a multilayered aquifer system and a downgradient stream. In this study, geological and hydrogeological data were integrated into a numerical flow model to examine identified trends using statistical approaches, including principle component analysis and hierarchal cluster analysis. A joint interpretation of the groundwater flow paths and contaminant concentrations in the different compartments (i.e. groundwater and hyporheic zone) provided insight on the transport processes of the different contaminant plumes to the stream. The analysis of historical groundwater concentrations of pharmaceutical compounds at the site suggested these compounds are slowly degrading The pharmaceutical compounds migrate in both a deep semi-confined aquifer, as well as in the shallow unconfined aquifer, and enter the stream along a 2 km stretch. This contrasted with the chlorinated ethenes, which mainly discharge to the stream as a focused plume from the unconfined aquifer. The integrated approach developed here, combining groundwater flow modelling and statistical analyses of the contaminant concentration data collected in groundwater and the hyporheic zone, lead to an improved understanding of the observed distribution of contaminants in the unconfined and semi-confined aquifers, and thus to their discharge to the stream. This approach is particularly relevant for large and long-lasting contaminant sources and plumes, such as abandoned landfills and industrial production sites, where field investigations may be very expensive.

KW - Pharmaceutical plume

KW - Groundwater-surface water interaction

KW - Integrated approach

KW - Groundwater modelling

KW - Principal component analyses and hierarchical cluster analysis

KW - Chlorinated ethenes

U2 - 10.1111/gwat.12904

DO - 10.1111/gwat.12904

M3 - Journal article

JO - Ground Water

JF - Ground Water

SN - 0017-467X

ER -