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Waste Management & Research
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0734242X09349857v1
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Article

Efficiency of energy recovery from municipal solid waste and the resultant effect on the greenhouse gas balance

Oliver Gohlke*

Martin GmbH für Umwelt- und Energietechnik

* To whom correspondence should be addressed. E-mail: oliver.gohlke{at}martingmbh.de.


  Abstract

Global warming is a focus of political interest and life-cycle assessment of waste management systems reveals that energy recovery from municipal solid waste is a key issue. This paper demonstrates how the greenhouse gas effects of waste treatment processes can be described in a simplified manner by considering energy efficiency indicators. For evaluation to be consistent, it is necessary to use reasonable system boundaries and to take the generation of electricity and the use of heat into account. The new European R1 efficiency criterion will lead to the development and implementation of optimized processes/systems with increased energy efficiency which, in turn, will exert an influence on the greenhouse gas effects of waste management in Europe. Promising technologies are: the increase of steam parameters, reduction of in-plant energy consumption, and the combined use of heat and power. Plants in Brescia and Amsterdam are current examples of good performance with highly efficient electricity generation. Other examples of particularly high heat recovery rates are the energy-from-waste (EfW) plants in Malm and Gothenburg. To achieve the full potential of greenhouse gas reduction in waste management, it is necessary to avoid landfilling combustible wastes, for example, by means of landfill taxes and by putting incentives in place for increasing the efficiency of EfW systems.

First published on October 16, 2009, doi:10.1177/0734242X09349857

Waste Management & Research 2009;27:894.

A more recent version of this article appeared on November 1, 2009

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