H. Okutan et al., POLYCYCLIC AROMATIC-COMPOUNDS DETECTED IN PYROLYSIS RESIDUES OF SEYITOMER OIL-SHALE AND LIGNITE, Environmental technology, 15(4), 1994, pp. 333-342
Polycyclic Aromatic Hydrocarbons (PAH) present in pyrolysis residues o
f Seyitomer oil shale are investigated . Residues were obtained from s
elf generated atmosphere, nitrogen and steam sweep pyrolysis and co-py
rolysis with Seyitomer lignite. The PAH determined were compared with
those detected in Seyitomer oil shale and Seyitomer lignite bitumen al
one. The residues and original solid samples were Soxhlet extracted us
ing 3:1 ratio of benzene and methanol. Extracts were analyzed using ca
pillary column gas chromatography. The peaks are identified using inte
rnal standards and retention indices reported in literature. Over 110
PAH compounds were identified in the pyrolysis residues. The change in
the content of aromatic compounds was found to be strongly dependent
on the different process conditions used in this study.