Applicability of Static Supercritical Carbon Dioxide Extraction in Biogeochemical Characterization of Oil ShalesReport as inadecuate




Applicability of Static Supercritical Carbon Dioxide Extraction in Biogeochemical Characterization of Oil Shales - Download this document for free, or read online. Document in PDF available to download.

This study aimed at the assessment of applicability of static supercritical carbon dioxide extraction method SFE in biogeochemical characterization of oil shales as an alternative to the standard Soxhlet extration. A comparative investigation on yields and compositions of the solvent soluble bitumoids and their constituents extracted from Estonian Kukersite and Dictyonema oil shales by using Soxhlet extraction method SEM and static CO2 supercritical fluid extraction in an autoclave at varied subpyrolysis temperatures was carried out. Resulting from TLC- and GC-MS-analyses, aliphatic and aromatic hydrocarbons and neutral oxygen compounds were separated and identified. For the first time, in the composition of the Kukersite bitumoid, homologous series of n-alkanones-3 to n-alkanones-7 were detected. The extracts obtained were similar in both group and individual composition, and geochemical parametres calculated on the basis of aliphatic hydrocarbons including that made static SFE applicable to geochemical investigation of oil shales.

KEYWORDS

Oil Shale; Bitumoid; Supercritical Extraction; Soxhlet Extraction; Geochemical Parametres

Cite this paper

H. Luik, L. Luik, V. Palu, G. Sharayeva and A. Gregor -Applicability of Static Supercritical Carbon Dioxide Extraction in Biogeochemical Characterization of Oil Shales,- American Journal of Analytical Chemistry, Vol. 5 No. 3, 2014, pp. 173-180. doi: 10.4236-ajac.2014.53021.





Author: Hans Luik, Lea Luik, Vilja Palu, Galina Sharayeva, Andre Gregor

Source: http://www.scirp.org/



DOWNLOAD PDF




Related documents