This paper analyzed thermal and carbonization properties of sewage sludge in fixed bed reactor and obtained following results. The heavy metal (Pb, Ni, Mn, Cr, Cu) content of Char showed the highest level at unprocessed sewage sludge, followed by carbonized sludge at 600, 400, and 500oC. It was thought to be mainly due to the yield of char rather than the influence of temperature. Also, the migration-test results of heavy metals satisfied the landfill directive in all samples, which may be possible to use it as landfill cover materials. The concentration of dioxin by changes of pyrolysis temperature was higher in the low temperature conditions and the proportion of PCDDs was higher than that of PCDFs.

• 손준익(국립환경과학원 폐자원에너지 연구과) | Jun-Ik Son
• 홍용희(국립환경과학원 폐자원에너지 연구과) | Yong-Hee Hong
• 조성진(연세대학교 환경공학부) | Sung-Jin Cho
• 유흥민(연세대학교 환경공학부) | Heung-Min Yoo
• 김기헌(국립환경과학원 폐자원에너지 연구과) | Ki-Heon Kim Corresponding author