This study focuses on investigating the effect of various solvents on
the supercritical extraction of organic matter from Moroccan oil shales,
with the goal of determining the optimal operating conditions that
result in a high yield of high-quality oil rich in aromatic compounds.
The results of this study demonstrate that the extraction yield and
quality of the extracted oil heavily depend on the chosen operating
conditions for supercritical or subcritical extraction of organic matter
from oil shale. Additionally, the study found that phenol can
effectively degrade oil shale and enable extraction of nearly all the
organic matter, even under mild conditions (T = 390°C, P = 1.2 MPa, Time
= 2.5 h. Furthermore, the oils obtained through this extraction process
are of high quality, with a rich content of maltenes, and a higher
concentration of aromatic compounds and lower levels of sulfur than
those obtained using other solvents.