The chemical desulphurisation from an Indonesian high sulphur sub-bituminous Banjarmasin Haji Ali-Aliansar coal was investigated using the peroxyacetic acid (PAA), a mild oxidising agent. A mixture of hydrogen peroxide:acetic acid (i.e. 30:70 by volume ratio with 6% of hydrogen peroxide concentration) at 50°C of reaction temperature is capable of reducing the total sulphur content in the coal from 3.46% to 1.29% by weight, corresponding to the removal of up to ca. 72% of the total sulphur; both the inorganic (mainly pyrite) and organic sulphur forms, and approximately 10 to 44% of ashes in the coal. The simultaneous removal of both inorganic and organic sulphur forms was measured with respect to reagent volume mixed ratio, reaction temperature and hydrogen peroxide concentrations. The success of desulphurisation was measured by the reduction of the total sulphur content of the desulphurised product, its S/ C atomic ratios and ash yields of the treated coal. In general, all inorganic and some of the organic sulphur could be removed from the coal using mild conditions without severely affecting the coal microstructure as observed via the Scanning Electron Microscope with Energy Dispersive X-ray (SEM-EDX)  which supplied the coal sample.


Anaz, M.(1995), Malaysia Seeking Clean Coal Technology. The Star. (May 18).

Omar, Z.(1994), The Global Power Exhibition and Conference for Asia. pp. 39.

Manahan, S.E.(1970), “Environmental Chemistry’, pp. 358-361, Willard Grant Press; Boston. 4. Wheelock, T.D.(1981), Chem. Eng. Communication, 12, p. 137.

Chuang, K.C., Markuszewski, R., and Wheelock, T.D.(1983), Fuel Processing Technol- ogy, 7, p. 43.

Mazumder, B., Saikia, P.C., Sain, B., Baruah, B.P., and Bordoloi, C.S. (1989), Desulphurisation of High-Sulphur Coals of North-East Indian Coalfields by Organometallic Compounds, Fuel, 68, p. 610.

Prasassarakich, P., and Thaweesri, T.(1996), Kinetics of Coal Desulphurisation with SOdium Benzoxide, Fuel, 7, p. 816.

Balaz, P., LaCount, R.B., Kern, D.G., and Turcaniova, L.(2001), Chemical Treatment of Coal by Grinding and Aqueous Caustic Leaching, Fuel, 80, p. 665. 9. Ali, A., Sunil, K.S., and Haque, R. (1992), Chemical Desulphurisation of High Sulphur Coals, Fuel, 71, p. 835.

Attia, Y.A., and Weiwen, L. (1987), ‘Processing and Utilisation of High Sulphur Coal II’ (Eds. Chugh, Y.P., and Caudle, R.D.), p. 202, Elsevier, New York.

Sain, B., Saikia, P.C., Baruah, B.P., Bordoloi, C.S., and Mazumder, B. (1991), Fuel, 70, p. 753.

Ahnonkitpanit, E., and Prasassarakich, P.(1989), Coal Desulphurisation in Aqueous Hydrogen Peroxide, Fuel, 68, p. 819.

Palmer, S.R., Hippo, E. J., and Dorai, X.A.(1994), Chemical Coal Cleaning Using Selective Oxidation, Fuel, 73, p. 161.

Borah, D., Baruah, M.K., and Haque, I. (2001), Oxidation of High Sulphur Coal. Part 2. Desulphurisation of Organic Sulphur by Hydrogen Peroxide in Presence of Metal Ions, Fuel, 80, p. 1475.

Ismail, K., Kamal, M.L., Ishak, M.A.M., Zakaria, Z., Majid, K.A., and Hassan, H. (1996), Depyritisation on Malaysian Coals Using Chemical Approaches. Proc. 12th. Symposium of Malaysian Chemical Engineers, UKM, Bangi, p. 267. 36


Download data is not yet available.