Szukana fraza: [Abstract = "Today, there is a rising interest in many countries in \?traditional\? \(e.g. agro and forest\) biomass and waste biomass \(e.g. sewage sludge\) utilization processes \(e.g. combustion, co\-combustion, gasification and pyrolysis\). During the last twenty years, there has been a major change in the way that sludge is disposed."]