Oil Shale, 2007, Vol. 24, No. 3, pp. 583-589
LEACHING BEHAVIOR
OF OIL SHALE SEMICOKE: SULPHUR SPECIES
H. HARZIA, K. ORUPÕLD, J. HABICHT, T. TENNO
Sulphide, sulphite, thiosulphate, sulphate and total sulphur were analyzed in batch leaching tests
and in a percolation test to study sulphur leaching from oil shale semicoke.
The results showed that thiosulphate is the major sulphur species in the semicoke leachate in the conditions of usual
disposal practice.
REFERENCES
1.
Veski, R. The volumes of spent oil
shale from Estonian oil-shale processing units in 1921–2002 // Oil
Shale. 2005. Vol. 22, No. 3. P. 345–357.
2.
Environmental
hazard assessment of semi-coke // Estonian Environmental Research Centre
Report. Tallinn, 2003 [in Estonian]. (http://www.envir.ee/
jaatmed/poolkoksi_uuring.pdf).
3.
Mölder, L.,
Elenurm, A., Tamvelius, H. Sulphur compounds in a
hydraulic ash-disposal system // Proc. Estonian Acad. Sci. Chem.
1995. Vol.44, No. 2/3. P. 207–211.
4.
Yefimov, V.,
Doilov, S., Lööper, R., Soo, M. On
the possibility of preventing the formation of water-soluble sulfide sulfur at
processing of oil shale in gas generators // Oil Shale. 1984. Vol. 1,
No. 2. P. 179–188.
5.
Nielsen, A. H.,
Vollersten, J., Hvitve-Jacobsen, T. Determination of kinetics and
Stoichiometry of chemical sulfide oxidation in wastewater of sewer
networks // Environ. Sci. Technol. 2003. Vol. 37, No. 17. P.
3853–3858.
doi:10.1021/es034035l
6.
Kahru, A.,
Kurvet, M., Kurvet, I. Study of the toxicological impact of different
components of ash-heap water (sulphur rich phenolic leachate) using luminescent
bacteria as test organisms // Oil Shale. 1997. Vol. 14, No. 4
Special. P. 469–475.
7.
EVS 644:1995. Solid fuels sulphur content. Determination of total
sulphur and its bonding forms. Eesti Standardiamet, 1995.
8.
EVS-EN
12457-1:2002, Characterisation of waste – Leaching –
Compliance test for leaching of granular waste materials and sludges – Part 1:
One stage batch test at a liquid to solid ratio of 2 l/kg for materials with
particle size below 4 mm (without or with size reduction). Eesti
Standardikeskus, 2002.
9.
EVS-EN
12457-4:2002, Characterisation of waste – Leaching – Compliance test for
leaching of granular waste materials and sludges – Part 4: One stage batch
test at a liquid to solid ratio of 10 l/kg for materials with particle size
below 10mm (without or with size reduction). Eesti Standardikeskus, 2002.
10. Lure, J., J., Rybnikova, A. M. Chemical analysis of
wastewater. – Moscow, 1974 [in Russian].
11.
American Public Health
Association. Standard Methods for the Examination of Water and Wastewater. –
Washington D.C., 1986.
12.
Wallace, J. R., Alden, L.,
Bonomo, F., Sexton, E. Analytical methods for oil shale
wastes // Oil Shale Symp. Proc., 15th. 1982. P. 573–580.