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|Title:||Combustion behaviour of some biodesulphurized coals assessed by TGA/DTA||Authors:||Marinov, S. P.
|Issue Date:||2010||Publisher:||ELSEVIER SCIENCE BV||Source:||THERMOCHIMICA ACTA, 497(1-2). p. 46-51||Abstract:||Thermal analysis, i.e. TGA/DTA is used to study the changes in the combustion behaviour of microbially treated coals. In view of their high sulphur content and industrial significance three samples are under consideration, i.e. one lignite and two subbituminous from different region in Bulgaria. The differences in burning profiles can be related to structural changes resulted from biological treatments. The overall biological treatment generates these changes probably due to the oxidation process. Concerning organic sulphur biodesulphurization there is no change in any drastic manner of the thermal characteristic parameters. In general, applied biotreatments provoke a complex influence on combustion coal behaviour. From one side a better ignition performance, a minor decrease in higher heating value and diminishing peak temperature of maximum weight loss rate for all biotreated samples are observed. From other side some decrease in the combustibility indicated by an increase in the combustion time and the end of combustion temperature are obvious. Also well determined decrease of self-heating temperature after biotreatments evolves high risk of spontaneous unmanageable coal combustion. (C) 2009 Elsevier B.V. All rights reserved.||Notes:||[Marinov, S. P.; Gonsalvesh, L.; Stefanova, M.] Bulgarian Acad Sci, Inst Organ Chem, BU-1113 Sofia, Bulgaria. [Yperman, J.; Carleer, R.; Reggers, G.] Hasselt Univ, CMK, Res Grp Appl & Analyt Chem, B-3590 Diepenbeek, Belgium. [Yurum, Y.] Sabanci Univ, Fac Engn & Nat Sci, TR-34956 Istanbul, Turkey. [Groudeva, V.] Univ Sofia, Fac Biol, Sofia 1164, Bulgaria. [Gadjanov, P.] Tech Univ Sofia, Thermal & Nucl Power Eng Dept, Sofia 1756, Bulgaria. email@example.com||Keywords:||Coal; Sulphur; Biodesulphurization; Thermogravimetry; DTA;Coal; Sulphur; Biodesulphurization; Thermogravimetry; DTA||Document URI:||http://hdl.handle.net/1942/10708||ISSN:||0040-6031||e-ISSN:||1872-762X||DOI:||10.1016/j.tca.2009.08.012||ISI #:||000274859700008||Category:||A1||Type:||Journal Contribution|
|Appears in Collections:||Research publications|
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