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Title of Journal: Clean Techn Environ Policy

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Abbravation: Clean Technologies and Environmental Policy

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Springer-Verlag

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DOI

10.1002/masy.200450623

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1618-9558

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Analysis of methane yields from energy crops and a

Authors: Alexander Bauer Christian Leonhartsberger Peter Bösch Barbara Amon Anton Friedl Thomas Amon
Publish Date: 2009/07/07
Volume: 12, Issue: 2, Pages: 153-161
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Abstract

Currently an increasing demand for renewable energy can be observed A part of this demand could be covered by the production of energy from agrarian biomass Due to the limited availability of arable land food and feed production are starting to compete for agrarian resources A way out of this dilemma is to develop concepts that are based on otherwise unused agrarian biomass like straw and include new technologies for the fermentation of lignocellulosic biomass In this paper the energy potentials of two different cropping systems are compared In the energybased crop rotation system all crops were used either for biogas or ethanol production In the biorefinerybased approach the various crops were used in cascades for the production of food as well as feed Experimental laboratory work and field trials were combined to calculate energy and biomass yields of the crops under investigation The results demonstrate that steam explosion pretreatment of wheat straw led to a 30 increase in the specific methane yield The calculated energy output of the biorefinerybased crop rotation system amounted to a total of 126 GJ ha−1 year−1 Extrapolating this energy output to the total arable land of the EU27 member states 13608 PJ of energy could be produced Therefore biorefinerybased crop rotation systems could provide approximately three times more energy to the European population than energybased crop rotation systemsThis project was carried out and financed within the scope of the Austrian Program on Technologies for Sustainable Development “Energy systems of tomorrow” This program is an initiative of the Austrian Federal Ministry of Transport Innovation and Technology BMVIT Additional funding was provided by the Austrian Federal Ministry of Agriculture Forestry Environment and Water Management

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