| Abstract [eng] |
According to the National Energy Independence Strategy, renewable energy sources in Lithuania will have to reach 45 % of final energy balance by 2030. This will also increase the consumption of biofuel and in result generated ash quantity from wood fuel. According to the statistics in Lithuania, more than 30 % wood biofuel ash (waste codes 10 01 01 and 10 01 03) are disposed of in landfills, thus not exploiting the potential of the trace elements contained in wood ash to produce value-added products. The paper analyzes scientific, practical literature and legislation related to the formation and management of wood biofuel ash. Also, the most widely used ash handling methods in Lithuania and newly proposed ways of handling ash, especially their secondary uses. In research methodology developed and proposed an integrated management system (feedback-feed-forward control system) that would help companies burning wood biofuels or waste managers to reduce the amount of ash disposed of in landfills. Industrial ecology tools (prevention and industrial symbiosis) were applied for wood biofuel ash management within the selected company’s UAB “Litesko” department Biržų šiluma; the feasibility analysis of proposed alternatives was performed. The results of this analysis help to understand which industries can interact with each other in order to increase the use of biofuel ash for new products production. For example, the work analyzes an alternative that aims to improve the quality of sewage sludge compost by composting it with wood biofuel ash waste due to the presence suitable for fertilization and useful organic and inorganic materials in these ashes. Proposed preventive measures of the proposed environmental management system can contribute to the reduction of air pollution, increase of efficiency of use of resources (biofuel, diesel fuel) and gain economic benefit. |
