A terrorist attack could result in the generation of large quantities of contaminated building debris that requires disposal. This debris could be contaminated with chemical and/or biological contaminants. The development of plans for the safe disposal of large quantities of contaminated debris requires information on the behavior of such debris in landfills. This information is required to insure that the cleanup from a catastrophic event can proceed without delays attributable to concerns over the safety of a disposal alternative.
A terrorist attack could result in the generation of large quantities of contaminated building debris that requires disposal. This debris could be contaminated with chemical and/or biological contaminants. The development of plans for the safe disposal of large quantities of contaminated debris requires information on the behavior of such debris in landfills. The overall objective of this research is to develop and experimentally validate a model to describe the transport of chemical warfare agents in a simulated landfill. The fate and transport of organic chemicals in landfills is governed by several processes including volatilization, sorption/desorption, biodegradation, abiotic hydrolysis and the association of chemicals with humic matter. Initial work will be conducted in batch systems to study each fate process in isolation. Thereafter, work will be conducted in columns in which all fate processes, landfill gas production, and water flux are influencing contaminant behavior concurrently.
| Copyright: | © IWWG International Waste Working Group | |
| Source: | Workshop G (Oktober 2007) | |
| Pages: | 7 | |
| Price inc. VAT: | € 0,00 | |
| Autor: | Prof. Morton A. Barlaz Jovita Marquez Saquing Isabella Mezzari Dr. Detlef R Knappe | |
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METAL SPECIATION IN NINE FRENCH LANDFILL LEACHATES
© IWWG International Waste Working Group (10/2007)
Several heavy metals or metalloids, that may be present in landfill leachates, are considered as priority pollutants for groundwater resources (for example lead, cadmium, nickel; OJEC, 2001). While the fate and transport of such elements are largely influenced by chemical speciation reactions, landfill risk assessments generally adopt a simplified “Kd” approach which assumes steady-state liquid-solid partition between the liquid and solid phases. Such simplification may result in a severe overestimation of long-term environmental or health impact. Speciation reactions such as precipitation or co-precipitation participate in the natural attenuation of landfill leachate and help explain why heavy metals are rarely detected in groundwater at significant distances from landfills (Christensen et al., 2001).
Auswirkungen von REACH
© Rhombos-Verlag (7/2007)
Das neue europäische Chemikalienrecht sieht eine weitreichende Abfallausnahme vor
AUF EIN WORT
© Rhombos-Verlag (9/2008)
Klärschlamm darf nicht auf den Boden
Brüche vermeiden und Probleme vermindern
© Rhombos-Verlag (1/2008)
Die Europäische Abfallrahmenrichtlinie und die Abfalleinstufung sollten möglichst eng mit dem Chemikalienrecht verzahnt werden
IRON AND MANGANESE SURVEY IN AQUIFERS SURROUNDING LANDFILLS IN WALLONIA (BELGIUM)
© IWWG International Waste Working Group (10/2007)
The groundwater biogeochemistry around waste disposal facilities has been widely studied since twenty years (Christensen & al, 2001). It is well known that leachates produced by water percolation through waste solid often contain high concentrations of dissolved Fe and Mn (Christensen & al, 1997). Fe(III) and Mn(IV) also enter in the composition of aquifers matrix (silts, sand, rocks). It constitutes a second reserve of electrons acceptors for further anaerobic biodegradation in aquifer environment.