Transport and degradation of propyleneglycol and potassium acetate in the unsaturated zone

French, Helen K.; Zee, S.E.A.T.M. van der; Leijnse, A.

doi:10.1016/s0169-7722(00)00187-x

Cited by 65 publications

(32 citation statements)

References 19 publications

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“…Although degradability of de-icing chemicals in general is positive for the environment, negative consequences can be anaerobic conditions. Field experiments (French et al, 2001) showed an increase in manganese concentration when propylene glycol and Potassium acetate was supplied to the ground surface even in the unsaturated zone, indicating oxygen limitation. On-going research (French et al, 2009) suggests that nitrate could increase remediation and improve redox conditions in local soils.…”

Section: Organic De-icing Chemicalsmentioning

confidence: 98%

“…The treatment of water contaminated with organic de-icing chemicals is usually based on insitu or off-situ aerobic and/or anaerobic degradation. The tested techniques vary from constructed wetlands, reed beds, constructed soil filters natural soil profiles (French et al, 2001, Jaesche et al, 2006 to more conventional wastewater treatment plants (Rusten et al, 1999). The chemicals are supplied during the frozen season which may vary geographically but falls roughly between October to April.…”

Section: Organic De-icing Chemicalsmentioning

confidence: 99%

“…Although the organic de-icing chemicals are degradable and the top soil hosts large amounts of bacteria and fungi, the temperatures are negative or close to zero, and there is little degradation during this period. Half lives of Propylene Glycol and Acetate under field conditions throughout melting period and into the summer ranged between 15-46 days (French et al, 2001). Degradation rates of other airport chemicals, as well as the increase of rates caused by optimizing the C:N:P ratio are reported in French et al (2002).…”

Section: Organic De-icing Chemicalsmentioning

confidence: 99%

“…Basically, this effect is (i) a more irregular transport behaviour of the contaminants, and (ii) a larger uncertainty about this behaviour. To give an impression of how heterogeneity affects the transport pattern, Figure 3 shows the leaching behaviour of both inert chloride and degrading de-icing chemical at Oslo Airport, Gardermoen (French et al, 2001). We observe a very irregular 'plume' of contaminant.…”

Section: Stochastic Hydrologymentioning

confidence: 99%

“…Fig. 3 The erratic pattern of chloride and propylene glycol transport in a heterogeneous soil representative of the Moreppen site at Gardermoen (French et al, 2001). …”

Section: Stochastic Hydrologymentioning

confidence: 99%

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Research for Investigating and Managing Soil Contamination Caused by Winter Maintenance in Cold Regions

French¹,

Zee²

2011

Soil Contamination

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Section: Organic De-icing Chemicalsmentioning

confidence: 98%

Section: Organic De-icing Chemicalsmentioning

confidence: 99%

Section: Organic De-icing Chemicalsmentioning

confidence: 99%

Section: Stochastic Hydrologymentioning

confidence: 99%

“…Fig. 3 The erratic pattern of chloride and propylene glycol transport in a heterogeneous soil representative of the Moreppen site at Gardermoen (French et al, 2001). …”

Section: Stochastic Hydrologymentioning

confidence: 99%

See 3 more Smart Citations

Research for Investigating and Managing Soil Contamination Caused by Winter Maintenance in Cold Regions

French¹,

Zee²

2011

Soil Contamination

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References

2012

An Introduction to Thermogeology: Ground Source Heating and Cooling

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Towards understanding time‐lapse electrical resistivity signals measured during contaminated snowmelt infiltration

Bloem

Forquet

Søiland

et al. 2020

Near Surface Geophysics

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To improve risk assessment, control and treatment strategies of contaminated sites, we require accurate methods for monitoring solute transport and infiltration in the unsaturated zone. Highly spatio‐temporal heterogeneous infiltration during snowmelt increases the risk of contaminating the groundwater in areas where de‐icing chemicals are required for winter maintenance of roads and runways. The objective of this study is to quantify how the different processes occurring during snowmelt infiltration of contaminated meltwater affect bulk electrical resistivity. Field experiments conducted at Moreppen experimental lysimeter trench are combined with heterogeneous unsaturated soil modelling. The experimental site is located next to Oslo airport, Gardermoen, Norway, where large amounts of de‐icing chemicals are used to remove snow and ice every winter. Bromide, an inactive tracer, and the de‐icing chemical propylene glycol were applied to the snow cover prior to the onset of snowmelt, and their percolation through the unsaturated zone was monitored with water sampling from 37 suction cups. At the same time, cross‐borehole time‐lapse electrical resistivity measurements were recorded along with measurements of soil water tension and temperature. Images of two‐dimensional (2D) bulk resistivity profiles were determined and were temperature corrected, to compensate for the change in soil temperature throughout the melting period. By using fitted parameters of petrophysical relations for the Moreppen soil, the tensiometer data gave insight into the contribution of water saturation on the changes in bulk resistivity, while water samples provided the contribution to the bulk resistivity from salt concentrations. The experimental data were compared with numerical simulation of the same experimental conditions in a heterogeneous unsaturated soil and used to quantify the uncertainty caused by the non‐consistent resolutions of the different methods, and to increase our understanding of the resistivity signal measured with time‐lapse electrical resistivity tomography. The work clearly illustrates the importance of ground truthing in multiple locations to obtain an accurate description of the contaminant transport.

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Transport and degradation of propyleneglycol and potassium acetate in the unsaturated zone

Cited by 65 publications

References 19 publications

Research for Investigating and Managing Soil Contamination Caused by Winter Maintenance in Cold Regions

Research for Investigating and Managing Soil Contamination Caused by Winter Maintenance in Cold Regions

References

Towards understanding time‐lapse electrical resistivity signals measured during contaminated snowmelt infiltration

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