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Assessment of the biological activity of waste – a comparison of anaerobic test methods in Germany and in the UK

In Germany, the parameter AT4 (respiration activity determined over the course of 4 days in laboratory testing) and GB21 (gas formation determined over the course of 21 days in laboratory testing) were implemented in the German legislation (Ordinance on Environmentally Compatible Storage of Waste from Human Settlements (Abfallablagerungsverordnung, 2001) in order to describe the biodegradability of the waste and to determine the efficiency of the mechanical-biological pre-treatment.

In comparison to the situation in Germany, two different methods for assessment of the biodegradability of waste were developed in the UK (Godley et al. 2005). The BM100 is an anaerobic methanogenic digestion test, which runs for up to 100 days. The DRI is a test method in order to evaluate the aerobic dynamic respiration. In the paper the differences of the anaerobic test methods are discussed. Different kinds of pre-treated waste from different treatment steps were analysed with both methods and the advantages and disadvantages of both methods were investigated. In order to compare the waste treatment systems in Germany and the UK, it is necessary to know the limitation of each method.

Copyright:	© Wasteconsult International
Quelle:	MBT 2007 (Mai 2007)
Seiten:	11
Preis:	€ 5,50
Autor:	Univ.-Prof. Dr.-Ing. Anke Bockreis Dr.-Ing. Wolfgang Müller Dr.-Ing. Iris Steinberg
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