Biodesulphurized subbituminous coal by different fungi and bacteria studied by reductive pyrolysis. Part 1: Initial coal

One of the perspective methods for clean solid fuels production is biodesulphurization. In order to increase the effect of this approach it is necessary to apply the advantages of more informative analytical techniques. Atmospheric pressure temperature programming reduction (AP-TPR) coupled with different detection systems gave us ground to attain more satisfactory explanation of the effects of biodesulphurization on the treated solid products. Subbituminous high sulphur coal from ‘‘Pirin” basin (Bulgaria) was selected as a high sulphur containing sample. Different types of microorganisms were chosen and maximal desulphurization of 26% was registered. Biodesulphurization treatments were performed with three types of fungi: ‘‘Trametes Versicolor” – ATCC No. 200801, ‘‘Phanerochaeta Chrysosporium” – ME446, Pleurotus Sajor-Caju and one Mixed Culture of bacteria – ATCC No. 39327. A high degree of inorganic sulphur removal (79%) with Mixed Culture of bacteria and consecutive reduction by 13% for organic sulphur (Sorg) decrease with ‘‘Phanerochaeta Chrysosporium” and ‘‘Trametes Versicolor” were achieved. To follow the Sorg changes a set of different detection systems i.e. AP-TPR coupled ‘‘on-line” with mass spectrometry (AP-TPR/MS), on-line with potentiometry (AP-TPR/pot) and by the ‘‘off-line” AP-TPR/GC/MS analysis was used. The need of applying different atmospheres in pyrolysis experiments was proved and their effects were discussed. In order to reach more precise total sulphur balance, oxygen bomb combustion followed by ion chromatography was used

Biobleaching of kraft cellulose pulp by Poliporus versicolor (2)

12th European Congress on Biotechnology (ECB 12) -- AUG 21-24, 2005 -- Copenhagen, DENMARKWOS: 000231195200627

Physiology of Mold-Yeast Dimorphism in Genus Mycotypha (Mucorales)

WoSScopu

Reductive Pyrolysis Study of Biodesulfurized Subbituminous Coal

Biodesulfurization is one of the perspective methods for production of friendly fuels. Reductive pyrolysis in mode of atmospheric pressure temperature programmed reduction (AP-TPR) combined with varied detection systems gave us possibility to obtain more s a t isfactory explanation of biodesulfurization effects. AP-TPR coupled “on-line” and “off-line” with potentiometry, massspectrometry and GC/MS analysis with inner sulfur standards for quantification were applied. Subbituminous coal from “Pirin” basin, Bulgaria was treated by three different types of microorganisms with maximal desulfurization effect for total (26%) and organic sulfur (13%). Namely, two types white rot fungi – “Trametes Versicolor , “Phanerochaeta Chrysosporium” and one mixed bacterial culture were used. Improved sulfur balance determination was registered

Reductive Pyrolysis Study of Biodesulfurized Subbituminous Coal

Biodesulfurization is one of the perspective methods for production of friendly fuels. Reductive pyrolysis in mode of atmospheric pressure temperature programmed reduction (AP-TPR) combined with varied detection systems gave us possibility to obtain more s a t isfactory explanation of biodesulfurization effects. AP-TPR coupled “on-line” and “off-line” with potentiometry, massspectrometry and GC/MS analysis with inner sulfur standards for quantification were applied. Subbituminous coal from “Pirin” basin, Bulgaria was treated by three different types of microorganisms with maximal desulfurization effect for total (26%) and organic sulfur (13%). Namely, two types white rot fungi – “Trametes Versicolor , “Phanerochaeta Chrysosporium” and one mixed bacterial culture were used. Improved sulfur balance determination was registered

Biodesulphurized subbituminous coal by different fungi and bacteria studied by reductive pyrolysis

One of the perspective methods for clean solid fuels production is biodesulphurization. In order to increase the effect of this approach it is necessary to apply the advantages of more informative analytical techniques. Atmospheric pressure temperature programming reduction (AP-TPR) coupled with different detection systems gave us ground to attain more satisfactory explanation of the effects of biodesulphurization on the treated solid products. Subbituminous high sulphur coal from “Pirin” basin (Bulgaria) was selected as a high sulphur containing sample. Three different types of microorganisms were chosen and maximal desulphurization of 26% was registered. The following biodesulphurization treatments were performed: three types of fungi – “Trametes Versicolor” – ATCC №200801, “Phanerochaeta Chrysosporium” – ME446, Pleurotus Sajor-Caju and Mixed Culture of bacteria – ATCC №39327. A high degree of inorganic sulphur removal (79%) was established and consecutive reduction by ~ 13% for organic sulphur (Sorg) was achieved. To follow the Sorg changes a set of different detection systems i.e. AP-TPR coupled “on-line” with mass-spectrometry (AP-TPR/MS), on-line with potentiometry (AP-TPR/pot) and by the “off-line” AP-TPR/GC/MS analysis was used. In order to reach more precise sulphur balance, oxygen bomb combustion followed by ion chromatography was used