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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/13782

Title: Organic sulphur alterations in biodesulphurized low rank coals
Authors: Gonsalvesh, L.
Marinov, S. P.
Stefanova, M.
Carleer, R.
Yperman, J.
Issue Date: 2012
Citation: FUEL, 97, p. 489-503
Abstract: Two Bulgarian high sulphur coals, i.e. subbutiminious (Pirin) and lignite (Maritza East), and one Turkish lignite (Cayirhan-Beypazari) are biodesulphurized on laboratory scale. Prior to biotreatments coal samples are chemically treated to be demineralized and depyritized. Due to chemical treatments total sulphur desulphurization in the range of 25.3-54.2% is achieved. Inorganic sulphur (pyritic and sulphatic) is mainly attacked. Pyritic sulphur desulphurization varies in the range of 59.6-77.4%. The white rot fungi ""Phanerochaeta chrysosporium" - ME446 and the thermophilic and acidophilic archae "Sulfolobus solfataricus" - ATCC 35091 are the microorganisms applied in the biodesulphurization processes. Better biodesulphurization is attained for coal samples treated with "P. chrysosporium". Maximum effect of biodesulphurization due to further total sulphur decrease (Delta S-t) of 24.2% and further organic sulphur decrease (Delta S-o) of 23.8% is registered after fungi biotreatments on deminerilized and depyritized coals. By "S. solfataricus" maximum further Delta S-t and Delta S-o biodesulphurization effects of 16.9% and 18.3%, respectively, are determined. AP-TPR device coupled with different detection systems (MS and TD-GC/MS) gives us opportunity to track organic sulphur alterations as a result of the applied biotreatments. By AP-TPR "off-line" TD-GC/MS an improved organic sulphur information is obtained due to specific sulphur sorbent application. A broad range of sulphur-containing organic compounds as well as SO2, COS and CS2 are identified and quantitatively interpreted. (C) 2012 Elsevier Ltd. All rights reserved.
Notes: [Carleer, R.; Yperman, J.] Hasselt Univ, CMK, Res Grp Appl & Analyt Chem, B-3590 Diepenbeek, Belgium. [Gonsalvesh, L.; Marinov, S. P.; Stefanova, M.] Bulgarian Acad Sci, Inst Organ Chem, BU-1113 Sofia, Bulgaria.
URI: http://hdl.handle.net/1942/13782
DOI: 10.1016/j.fuel.2012.02.015
ISI #: 000303979400055
ISSN: 0016-2361
Category: A1
Type: Journal Contribution
Validation: ecoom, 2013
Appears in Collections: Research publications

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