1. Introduction
The list of waste biomass usable for energy purposes is nearly endless and depends on what is readily available in a certain location. A number of processes has been studied and implemented(Khoo, 2009) not only in industrialized countries but also in lowincome
countries to reuse the organic fraction of waste in cost effective ways, such as through anaerobic digestion at micro-scale(Chanakya et al., 2009) and other energy recovery processes (Ak,2012). Actually often the most common practice is the open burning, in particular for agri-wastes, which are generated in large
volumes seasonally. Besides the loss of potential recovery of a local resource, that results also in a huge impact on the environment generating uncontrolled emissions. A number of studies assessed the environmental impact in terms of Green House Gas (GHG)
emissions, in particular CH4 and NO2 (Thao et al., 2011),