Title of article :
Biodesulphurized low rank coals appraisal: Initial, treated, their bitumens and solid residues
Author/Authors :
Marinov، نويسنده , , S.P. and Stefanova، نويسنده , , M. and Gonsalvesh، نويسنده , , L. and Groudeva، نويسنده , , V. and Gadjanov، نويسنده , , P. and Carleer، نويسنده , , R. and Yperman، نويسنده , , J.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
7
From page :
2328
To page :
2334
Abstract :
Low rank high sulphur containing Bulgarian coals are biodesulphurized on laboratory scale. Treatment of Maritza East lignites by bacteria Pseudomonas putida B2 (PP) attained 44% total desulphurization, while biodesulphurization of Bobov dol subbituminous coal by Acidothiobacillus ferrooxidans F3 (AFe) demonstrated 14%. The caloric values were slightly altered, 0.8% for lignites and 4.7% for subbituminous coal. ns from the initial and biotreated coals and fractions of their neutral oils are studied. For subbituminous coal treated by AFe F3 bacteria increase in polar diterpenoids is registered by GC/MS. Concerning the set of polar diterpenoids produced during lignites treatment by PP B2 their relative contents are comparable with the ones for initial lignites. GC/MS analyses of soluble products from both coals did not give any information for sulphur containing compounds. ature programmed reduction coupled “on-line” with mass spectrometry (AP-TPR/MS) and its “off-line” TD-GC/MS version are used for sulphur tracking in solid residues after bitumen extraction. Quantitative interpretation of TD-GC/MS profiles revealed changes in organic sulphur compounds, elemental sulphur and SO2. s gave us ground to conclude that AFe F3 bacteria decrease pyritic sulphur content and slightly oxidize coal organic matter while PP B2 bacteria influence lignite organic matter and also affect pyritic sulphur.
Keywords :
Coal , Biodesulphurization , AP-TPR/MS , Sulphur
Journal title :
Fuel Processing Technology
Serial Year :
2011
Journal title :
Fuel Processing Technology
Record number :
1508645
Link To Document :
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