Multitracer experiment to evaluate the attenuation of selected organic micropollutants in a karst aquifer

Hillebrand, Olav; Nödler, Karsten; Sauter, Martin; Licha, Tobias

doi:10.1016/j.scitotenv.2014.10.102

Cited by 54 publications

(40 citation statements)

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“…The recovered mass for uranine247 was 492 g which amounts to 61.5% of its injected mass and is in good agreement with 248 recoveries in previous studies at the same test site34,[38][39][40] . The loss of uranine mass was 249 attributed to a fraction of aquifer water that discharges beneath the gauging station39 .…”

supporting

confidence: 88%

“…One particle 113 type for each material had an unmodified surface charge (plain, indicated as "0" ), and the 114 other had a more negative surface charge (carboxylated, indicated as "COOH" ). Negative Direct modeling using the transport parameters reported in Hillebrand et al 40 suggested 118 that these quantities would be likely to yield sufficiently high particle concentrations at 119 the spring, taking into account the limits of quantification of the methods used for particle 120 analysis. ing an area of 0.57 mm 2 .…”

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confidence: 99%

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Transport and Attenuation of Particles of Different Density and Surface Charge: A Karst Aquifer Field Study

Schiperski

Zirlewagen

Scheytt

2016

Environ. Sci. Technol.

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Although karst aquifers are far more susceptible to contamination than porous aquifers, with the transport of particulate matter being an important factor, little is known about the attenuation of solutes within karst aquifers and even less about the attenuation of particulate matter. These in situ investigations have therefore aimed to systematically identify the processes that influence the transport and attenuation of particles within a karst aquifer through multitracer testing, using four different types of 1 μm fluorescent particles and the fluorescent dye uranine. Each of the types of particles used were detected at the observed spring, which drains the investigated aquifer. However, the transport behavior varied significantly between the various particles and the uranine dye, with the breakthrough of particles occurring slightly earlier than that of uranine. Attenuation was determined from the tracer recovery and attributed to filtration processes. These processes were affected by the hydrophobicity and surface charge of the particles. Carboxylated polystyrene particles with a density and surface charge comparable to pathogenic microorganisms were found to be mobile in groundwater over a distance of about 3 km. No attenuation was observed for plain silica particles. Particles with these characteristics thus pose a major threat to karst spring water as they might occur as contaminants themselves or facilitate the transport of other contaminants.

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supporting

confidence: 88%

mentioning

confidence: 99%

Transport and Attenuation of Particles of Different Density and Surface Charge: A Karst Aquifer Field Study

Schiperski

Zirlewagen

Scheytt

2016

Environ. Sci. Technol.

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“…The half-lives of caffeine and paraxanthine were estimated in a US estuary to be 3 to >100 days and 11 to >100 days, respectively (Benotti and Brownawell 2009). In a German karst aquifer system, the caffeine half-life was estimated at 89 days (Hillebrand et al 2015). This high range of values indicates the need for sitespecific investigations under the prevailing local conditions.…”

Section: Documenting the Impact Of Climate Change On Sanitation Practmentioning

confidence: 99%

“…Caffeine's metabolite paraxanthine (1,7-dimethylxanthine) has also been used, but not as widely. Caffeine and/or paraxanthine have been measured in groundwater and surface water in Europe and the US (Buerge et al 2003;Glassmeyer et al 2005;Godfrey et al 2007;Hillebrand et al 2012;Reh et al 2013;Stuart et al 2014;Hillebrand et al 2015) and more recently in surface waters, urban groundwater, and roof-harvested rain water in South Africa (Matongo et al 2015;Sorensen et al 2015;Waso et al 2016;Wanda et al 2017;Rodríguez-Gil et al 2018). Denitrification is a naturally occurring microbial process that removes NO 3 − from groundwater.…”

Section: Introductionmentioning

confidence: 99%

Complex interactions between climate change, sanitation, and groundwater quality: a case study from Ramotswa, Botswana

et al. 2019

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Groundwater quantity and quality may be affected by climate change through intricate direct and indirect mechanisms. At the same time, population growth and rapid urbanization have made groundwater an increasingly important source of water for multiple uses around the world, including southern Africa. The present study investigates the coupled human and natural system (CHANS) linking climate, sanitation, and groundwater quality in Ramotswa, a rapidly growing peri-urban area in the semi-arid southeastern Botswana, which relies on the transboundary Ramotswa aquifer for water supply. Analysis of long-term rainfall records indicated that droughts like the one in 2013-2016 are increasing in likelihood in the area due to climate change. Key informant interviews showed that due to the drought, people increasingly used pit latrines rather than flush toilets. Nitrate, fecal coliforms, and caffeine analyses of Ramotswa groundwater revealed that human waste leaching from pit latrines is the likely source of nitrate pollution. The results in conjunction indicate critical indirect linkages between climate change, sanitation, groundwater quality, and water security in the area. Improved sanitation, groundwater protection and remediation, and local water treatment would enhance reliable access to water, de-couple the community from reliance on surface water and associated water shortage risks, and help prevent transboundary tension over the shared aquifer.

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“…Přesto některé z obcí vykazují relativně nízký podíl obyvatel napojených na kanalizace a ČOV nebo vůbec obecní ČOV nedisponují Hübelová a kol., 2016). Deforestace v krasovém prostředí často vede ke zvýšení erozních aktivit, které následně vedou k nárůstu kontaminace povrchových vod v krasových oblastech organickými látkami způsobujícími eutrofizaci vody (Jiang et al, 2009;van Beynen a Bialkowska-Jelinska, 2012;Hillebrand et al, 2015).…”

Section: Obyvatelstvo Lidská čInnost Sídla a Technická Infrastruktuunclassified

Development of Population and Technical Infrastructure in Municipalities of the Moravian Karst: Potential Influence on the Organic Pollution of Water

Hübelová¹,

Pavlík²

2016

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Water plays a key role in formation of the karstic regions. Due Keywords: demography, population density, human activities, epidemiology ÚvodChráněná krajinná oblast (CHKO) Moravský kras (MK) je unikátním krasovým prostorem. V důsledku geologických poměrů, klimatických a hydrologických podmínek se v tomto území vytvořil rozvinutý krasový reliéf. Typologicky se jedná o holokarst, tj. úplný kras se značným rozvojem povrchového i podzemního krasového fenoménu (Správa CHKO MK, 2016). Na utváření krasového prostředí se významnou měrou podílela voda. Ta hrála i v MK důležitou roli při rozvoji železářské výroby, populačním růstu obyvatel a vzniku sídel (Absolon, 1970).Organické znečištění vody, protékající povodím MK bylo popisováno již od 17. stol. Ze všech těchto uchovaných informací vyplývá, že vodní prostředí MK bylo hojně organicky znečištěno. Lze předpokládat, že toto znečištění souviselo především s lidskou činností (těžba nerostných surovin, odlesňováním a zemědělskou činností). Vyvstává proto otázka, jaké jsou hlavní zdroje organického znečištění vody (povrchové a krasové) v současné době a jak k němu přispívá činnost lidí a rozsah urbanizovaného území. Z předešlých ekologických studií prováděných v rámci sledování environmentálních a podmíněně patogenních

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Multitracer experiment to evaluate the attenuation of selected organic micropollutants in a karst aquifer

Cited by 54 publications

References 50 publications

Transport and Attenuation of Particles of Different Density and Surface Charge: A Karst Aquifer Field Study

Transport and Attenuation of Particles of Different Density and Surface Charge: A Karst Aquifer Field Study

Complex interactions between climate change, sanitation, and groundwater quality: a case study from Ramotswa, Botswana

Development of Population and Technical Infrastructure in Municipalities of the Moravian Karst: Potential Influence on the Organic Pollution of Water

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