In this study, PCDDs/DFs concentrations in flue gases from 58 crematories and in fly ashes and bottom ashes (mainly bone) from several crematories were measured to grasp the present state of PCDDs/DFs emissions from crematories. The effects of several factors were discussed to prevent PCDDs/DFs emissions from crematories. Total concentration of PCDDs/DFs was ranged from 0.113 to 87.461 ng/Sm3 and toxic equivalent concentration was ranged from 0.019 to 15.347 ng-TEQ/Sm3. As the results obtained in this research, the following measures to reduce PCDDs/DFs emission are recommended for existing crematories: (1) keeping the temperature at < 800oC or < 850oC in main/secondary chambers during a whole cremation, (2) lowering the temperature in the dust collector, (3) installing the high efficiency dust collector and reducing dust concentration to less than 0.02 g/Sm3, and (4) installing the sampling point for monitoring of PCDDs/DFs.

• 김기헌(국립환경과학원 폐자원에너지 연구과) | Ki-Heon Kim
• 정해영(국립환경과학원 폐자원에너지 연구과) | Hae-Young Jung
• 박재성(국립환경과학원 폐자원에너지 연구과) | Jae-Sung Park
• 권오준((사)한국페트병자원순환협회) | Oh-Jun Kwon
• 김민영(국립환경과학원 폐자원에너지 연구과) | Min-Young Kim
• 손준익(국립환경과학원 폐자원에너지 연구과) | Jun-Ik Son
• 홍용희(국립환경과학원 폐자원에너지 연구과) | Yong-Hee Hong
• 이상우(국립환경과학원 폐자원에너지 연구과) | Sang-woon Lee
• 김영란(국립환경과학원 폐자원에너지 연구과) | Young-Lan Kim Corresponding author