This paper aims at providing more recent  information concerning dioxins and furans emissions in cement plants. The evaluated results were obtained from thousands of monitoring tests carried out worldwide and in Romania, after 2006. The measurements cover most of the production technologies and a great variety of waste based alternative fuels.

Due to the conditions inherent to clinker production: high temperatures, approx. 2000 ^oC for gases and long residence times of flue gases in the kiln (about 10 seconds at temperatures higher than 1100 – 1200 °C and 5 – 6 second at temperatures over 1800°C), the release of dioxins and furans from clinker kilns is very low, no matter the fuels, even when alternative fuels based on hazardous waste are used.

As a result of the existing conditions, a DRE (destruction and removal factor) of 99.9999% can be reached in the clinker kilns for POPs (Persistent Organic Pollutants), like dioxins and furans. The measurements carried out worldwide and in Romania confirm the very low level of dioxin and furan emissions of clinker kilns.