currently
represents
important
issues
in
European Environmental Policy (CEC, 1999, 2008). Due to the predominantly
anaerobic decomposition of waste organic matter both
gaseous compounds (mainly CH4 and CO2) and degradation products
in the leachate (ammonium, dissolved organic carbon) are
generated over a long-time period (Bogner et al., 1998;
Krümpelbeck, 2000; Scharff and Jacobs, 2006). Since the collection
and treatment of landfill gas and leachate is very costly, different
remediation methods are more and more applied to stabilize
organic waste matter (e.g. in-situ aeration) and to shorten the time
for landfill aftercare. Simple and meaningful monitoring tools are
required in order to identify and evaluate the success of diverse
stabilization techniques.