Decarbonization and disposal of ash and slag waste of thermal power plants

Abstract

Carbon dioxide emissions are one of the causes of temperature increase and global warming. The legislative framework analysis has shown that all the prerequisites for the transition to low-carbon development, reduction of greenhouse gas emissions, and industry decarbonization have been created in Ukraine. The climate change scenarios have shown that general warming is expected in Ukraine by 2050. The maximum temperature changes are predicted to be +2.2ºC in December. The analysis of industry decarbonization directions has shown that major studies are focused on the decarbonization of metallurgical enterprises, coal industry enterprises, fuel and energy complex, transport decarbonization, production of “green” hydrogen as an alternative fuel, transition from traditional energy sources to alternative ones, and determination of economic mechanisms of carbon pricing. The issues of carbon dioxide capturing, transporting and storing are important. The research results have helped to determine the prospects and advantages of each direction. It is important to assess the possibilities and potential of using captured carbon dioxide. The carbon dioxide storage in deep geological formations will require a complex of actions aimed at preventing the pollution of environmental components. The advantages of transporting carbon dioxide by pipelines have been defined compared to transportation by road and rail transport. The disposal direction of ash and slag waste of thermal power plants has been determined. It consists in grinding waste in the carbon dioxide medium with obtaining stable Mg and Ca carbonates. This allows to expand the scope of waste use in the construction industry

Keywords

• decarbonization
• capture of carbon dioxide
• transportation of carbon dioxide
• storage of carbon dioxide
• industrial fixation of carbon dioxide
• thermal power plant waste
• grinding