Attenuation of landfill leachate pollutants in aquifers

Christensen, Thomas Højlund; Kjeldsen, Peter; Albrechtsen, Hans‐Jørgen; Heron, Gorm; Nielsen, Per Henning; Bjerg, Poul Løgstrup; Holm, Peter E.

doi:10.1080/10643389409388463

Cited by 424 publications

(237 citation statements)

References 124 publications

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“…An important factor associated with EOC persistence in the subsurface from landfill plumes is the development of a redox zone within the contaminant plume (e.g. Christensen et al, 1992). This reducing environment has been shown to be important in controlling the transport and fate of some organic compounds with otherwise high attenuation potential (Williams et al, 1984;Holm et al, 1995).…”

Section: Biodegradation and Redox Controlsmentioning

confidence: 99%

Emerging organic contaminants in groundwater: A review of sources, fate and occurrence

Lapworth

Baran

Stuart

et al. 2012

Environmental Pollution

1,444

587

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Emerging organic contaminants (EOCs) detected in groundwater may have adverse effects on human health and aquatic ecosystems. This paper reviews the existing occurrence data in groundwater for a range of EOCs including pharmaceutical, personal care, 'life-style' and selected industrial compounds. The main sources and pathways for organic EOCs in groundwater are reviewed, with occurrence data for EOCs in groundwater included from both targeted studies and broad reconnaissance surveys. Nanogram-microgram per litre concentrations are present in groundwater for a large range of EOCs as well as metabolites and transformation products and under certain conditions may pose a threat to freshwater bodies for decades due to relatively long groundwater residence times. In the coming decades, more of these EOCs are likely to have drinking water standards, environmental quality standards and/or groundwater threshold values defined, and therefore a better understanding of the spatial and temporal variation remains a priority.Keywords: emerging contaminants; review; groundwater; pharmaceuticals; occurrence Capsule: A large range of emerging organic contaminants are now being detected in groundwater as a result of recent and historical anthropogenic activities. IntroductionA diverse array of synthetic organic compounds are used by society in vast quantities for a range of purposes including the production and preservation of food, industrial manufacturing processes, as well as for human and animal healthcare. In the last few decades there has been a growing interest in the occurrence of these, so called, 'micro-organic contaminants' in the terrestrial and aquatic environment, their environmental fate and their potential toxicity (Stan and Linkerhagner, 1992;Stan et al., 1994;Halling-Sørensen et al., 1998;Daughton and Ternes, 1999;Schwarzenbach et al., 2006;Kümmerer, 2009). The contamination of groundwater resources by micro-organics is a growing concern and relatively poorly understood compared to other freshwater resources. Groundwater provides the most reliable perennial source of freshwater on Earth. It maintains flows and levels in rivers and lakes, is essential for the health of groundwater-dependant ecosystems, and in many parts of the world is the most important source of drinking water.Of particular concern are 'emerging organic contaminants' (EOCs). This term is used to cover not only newly developed compounds but also compounds newly discovered in the environment -often due to analytical developments (Lindsey et al., 2001;Petrovic and Barceló, 2006;Richardson and Ternes, 2011) and compounds that have only recently been categorised as contaminants. EOCs include a wide array of different compounds (as well as metabolites and transformation products-collectively referred to here as degradates)including; pharmaceuticals and personal care products (PPCPs), pesticides, veterinary products, industrial compounds/by-products, food additives as well as engineered nanomaterials. Because of the vast array of possible comp...

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Section: Biodegradation and Redox Controlsmentioning

confidence: 99%

Emerging organic contaminants in groundwater: A review of sources, fate and occurrence

Lapworth

Baran

Stuart

et al. 2012

Environmental Pollution

1,444

587

View full text Add to dashboard Cite

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“…Dissolved Fe(II) concentrations were likely on the order of several hundred µM in the zone of Fe(II) oxidation a few cm above the bottom layer (see Figure 5). These reaction systems mimic Fe-rich surface sediments in freshwater wetlands (e.g., Roden and Wetzel (1996)), as well as certain highly reducing groundwater environments (e.g., the landfill leachate-contaminated aquifers studied by Christensen et al 1994) in which porefluids containing 10s to 100s of micromoles of dissolved Fe(II) per L may impinge on downstream aerobic groundwaters.…”

Section: Opposing-gradient Studiesmentioning

confidence: 99%

Potential for Microscale Bacterial Fe Redox Cycling at the Aerobic-Anaerobic Interface

Roden

Sobolev

Glazer

et al. 2004

Geomicrobiology Journal

135

105

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“…However, the effect of chemical and biological processes is accentuated by anaerobic digestion in three main stages (Christensen et al, 1994;Themelis & Ulloa, 2007).…”

Section: Resultsmentioning

confidence: 99%

“…However, it is essential that there is a constant supply of the main reactant involved in the process, i.e. water (Christensen et al, 1994;Themelis & Ulloa, 2007). The mass balance between the organic compound and water in Equation 4 indicates that 1 kg of water enables consumption of 5.4 kg of organic matter.…”

Section: Resultsmentioning

confidence: 99%

Relationship Between Biogas Production and Variations in Electric Resistivity in Landfill of Rio Claro City, Brazil

Moreira¹,

Castro²,

Carrazza³

et al. 2015

Rev. Bras. Geof.

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ABSTRACT. This work relates measures of the biogas flow in drains located on landfill with measurements of electric resistivity, obtained by the technique of geophysical logging by measuring cable installed in two vertical boreholes near to two biogas drains, with different flows. The results indicate that variation in rainfall, generation and accumulation of biogas in landfill, are repairable correlation with oscillations in electrical resistivity measures. The biogas production is apparently conditioned by age of residues and organic matter available from the degradation. The biogas drain in region with low production of biogas does not present resistivity pattern directly or indirectly correlated to biogas production, while the biogas drain in region with high gas production was characterized by high resistivity values, with seasonal variation by influence of rainfall.

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Attenuation of landfill leachate pollutants in aquifers

Cited by 424 publications

References 124 publications

Emerging organic contaminants in groundwater: A review of sources, fate and occurrence

Emerging organic contaminants in groundwater: A review of sources, fate and occurrence

Potential for Microscale Bacterial Fe Redox Cycling at the Aerobic-Anaerobic Interface

Relationship Between Biogas Production and Variations in Electric Resistivity in Landfill of Rio Claro City, Brazil

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