Potential of energy and nutrient recovery from biodegradable waste by co-treatment in Lithuania

Abstract

Biodegradable waste quantities in Lithuania and their potential for the co-treatment in renewable energy and organic fertilizer production are investigated. Two scenarios are formulated to study the differences of the amounts of obtainable energy and fertilizers between different ways of utilization. In the first scenario, only digestion is used, and in the second scenario, other materials than straw are digested, and straw and the solid fraction of sewage sludge digestate are combusted. As a result, the amounts of heat and electricity, as well as the fertilizer amounts in the counties are obtained for both scenarios. Based on this study, the share of renewable energy in Lithuania could be doubled by the cotreatment of different biodegradable materials.

A multicomponent approach to using waste-derived biochar in biofiltration: A case study based on dissimilar types of waste

“…Sewage sludge (S) was collected from an urban WWTP in Klaipėda, the third largest city in Lithuania, with a population of about 159 thousand people in 2013. Sewage sludge production in the Klaipėda region has been calculated as 47 thousand tonnes per year (Havukainen et al 2011). Sewage sludge was subjected to digestion, dewatering and low-temperature drying treatment.…”

Assessment of biowaste losses through unsound waste management practices in rural areas and the role of home composting

“…New EU members are working to find new solutions to solve such problems and to avoid the landfill of biowaste. Such efforts were highlighted by Havukainen et al (2012) in Lithuania; Barekova et al (2013) in Slovakia; Horsák and Hřebíček (2014) in Czech Republic; Stanic-Maruna and Fellner (2012) in Croatia and Wójcik et al (2014) in Poland. At the household level, composting and vermicomposting are clean, sustainable and affordable technologies because they reuse waste to produce organic fertilizer supporting the local agriculture (Lim et al 2016).…”

Food Waste and Sustainable Food Waste Management in the Baltic Sea Region

“…Utilisation of food wastage varies, greatly depending on the production facility (Havukainen et al 2012). In 2005, about 90 % of food wastage (by-products, food remainders) generated in the grain processing companies was dumped.…”