The chapter discusses the problem of air emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/PCDFs) from the process of cement clinker production. In the analyzed cement kilns significant amount of fossil fuels is replaced with alternative fuels, mainly waste-derived fuels. Thus, particular attention has been paid to the potential impact on the level of the emissions such factors as type and quantity of used wastes and their ways of introducing into the kiln during co-combustion. The analysis include the results of measurements of PCDD/PCDF concentrations in the flue gases of selected cement kilns and differences in used raw materials, methods of production, technological process and flue-gas cleaning systems. Due to the fact that co-combustion in cement kilns is an alternative to incineration of waste, the emissions were compared with the emission of PCDD/PCDF from municipal solid waste incineration plants and the waste combustion in uncontrolled conditions (domestic furnaces and small boilers).

English title: Emissions of dioxins and furans from co-combustion of alternative fuels in cement kilns.