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Perkoulidis G.,Aristotle University of Thessaloniki | Malamakis A.,Aristotle University of Thessaloniki | Karagiannidis A.,Aristotle University of Thessaloniki | Wittmaier M.,Bremen University of Applied Sciences | Bilitewski B.,Institute of Waste Management and Contaminated Site Treatment
Journal of Environmental Protection and Ecology

Against the background of global climate change and increasing prices of fossil fuel, the importance of producing sustainable renewable energy increases significantly. CO 2-neutral energy generation using biomass or organic waste is an alternative option that deserves attention particularly in developing countries. The aim of this paper is to provide an integrated framework for the preparation of feasibility studies for the renewable energy sector there, considering technical, environmental, economic, socio-cultural, legal and institutional aspects which are particular applicable for developing countries. Such a feasibility framework involves a definition of the scope, which reflects the aims and objectives of the target groups (supplier, operator, etc. of renewable energy supply) and the methodologies and tools involved. All relevant aspects are covered: data collection, selection of sites and assessment of options. Furthermore, methods and tools for risk assessment and decision-making are presented and a practical plan of procedures is last provided. The proposed framework is then applied to a selected area in Vietnam and certain results of the study, showing that the implementation of a biogas plant utilising organic waste would be feasible, are presented in this paper. Source

Hoffmann G.,Institute of Waste Management and Contaminated Site Treatment | Schingnitz D.,Institute of Waste Management and Contaminated Site Treatment | Schnapke A.,Institute of Waste Management and Contaminated Site Treatment | Bilitewski B.,Institute of Waste Management and Contaminated Site Treatment
Waste Management

Climate protection is one of the main aims of environmental policy. One way to advance and push the progress is to reduce the use of fossil fuels for energy production through an increasing production of renewable and CO2-neutral energy for example through application of biomass. This paper sets the focus on biomass streams that can be used both thermal and biological for energy production like grass or energy crops. To calculate the potentials of decrease of CO2-emissions for treatment of biomass in either combustion or digestion plants some scenarios were set up with different assumptions regarding degree of efficiency of treatment plants which depends on size of plants and the treatment process itself. The energetic utilisation of the considered biomass streams is divided in different utilisation scenarios: combined heat and power generation (CHP) and heat generation or power generation only. Additionally four groups of plant sizes referring to electrical power (from 0.1 up to 10.0MW) were taken into consideration. The calculations of potential savings of CO2-emission in both types of treatment scenarios lead to the result that in comparison to biological technologies thermal processes show a much higher utilisation of the energy content in biomass. © 2009 Elsevier Ltd. Source

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