Subbituminous coal, which has the rank in between the other two coals, gave medium solubilization values under all conditions employed. For further study lignite was used along with other carbon and nitrogen sources for increase the efficiency of depolymerization.
microorganism. Coal solubilization is expected to occur in nutrient rich media whereas depolymerization of solubilized coal macromolecules is expected to occur in nutrient limited media. 3 To determine the role of extracellular enzymes Iaccases, lignin peroxidases and Mn peroxidases that are secreted by lignin degrading fungi during coal ...
The above procedures lead to coal solubilization by means of major chemical modification of the coal structure and attendant partial depolymerization. Analytical data on the products obtained indicate, however, that the above procedures do not cause complete coal depolymerization into low molecular weight, monocluster products.
In order to develop a system for a large scale coal solubilization and its bioconversion to utilizable fuel, we plan to clone the genes encoding Neurospora protein that facilitate depolymerization of coal. We also plan to use desulfurizing bacteria to remove the sulfur in situ and use other microorganisms to convert biosolubilized coal into ...
Jul 24, 1995 Coal solubilization is expected to occur in nutrient rich media whereas depolymerization of solubilized coal macromolecules is expected to occur in nutrient limited media. To determine the role of extracellular enzymes laccases, lignin peroxidases and Mn peroxidases that are secreted by lignin degrading fungi during coal solubilization or coal macro molecule depolymerization.
May 24, 2009 Sucrose was the best suitable carbon source for coal depolymerization by P. djamor and sodium nitrated followed by urea was the best nitrogen source. The Chelators like salicylic acid, TEA and metal ions Mg2, Fe3, Ca2, Cu2, Mn2 has enhanced the lignite solubilization process.
Jan 15, 2005 Marticgmx.net 358-919159321 Fax 358-919159322 University of Helsinki, Viikki Biocenter, Department of Applied Chemistry and Microbiology, P.O. Box 56 ...
This report concerns our research on base-catalyzed coal solubilization and a new approach for hydrogen addition. The work on base-catalyzed, chemical solubilization is continuing. this report is focused on the hydrogenation research. Specifically it deals with the use of arene chromium carbonyl complexes as reagents for the addition of ...
Coal solubilization is expected to occur in nutrient rich media whereas depolymerization of solubilized coal macromolecules is expected to occur in nutrient limited media. To determine the role of extracellular enzymes laccases, lignin peroxidases and Mn peroxidases that are secreted by lignin degrading fungi during coal solubilization or ...
Aug 01, 1998 Pectin depolymerization by PG2 was extensive at pH values from 4.0 to 5.0 and was further enhanced at high K levels. Oligomers were abundant products in in vitro reactions at pH 4.0 to 5.0, decreased sharply at pH 5.5, and were negligible at pH 6.0. EDTA stimulated PG-mediated pectin solubilization at pH 6.0 but did not promote oligomer ...
yields a solution of coal macromolecules, principally humic acids.7 It is recognized that low rank coals and oxidized coals were more susceptible to solubilization by the wood-rot fungus Coriolus versicolor and by a range of other fungal species.8 These findings
Jul 11, 2017 Electrochemical Depolymerization of Lignin into Renewable Aromatic Compounds in a Non-Diaphragm Electrolytic Cell. RSC Adv. 4 , 2991729924 2014. CAS Article Google Scholar
to coal solubilization research that will be analyzed in this study. Sub-section 2.1 explains coal conversion and clean coal technology utilization. ... namely Solubilization and Depolymerization. In his research, the Solubilization process utilizes microfungi and aerobic bacteria while the depolymerization process utilizes ...
Lignin, Humic Substances and Coal. Dr. Martin Hofrichter. E-mail address Marticgmx.net 358919159321358919159322 University of Helsinki, Viikki Biocenter, Department of Applied Chemistry and Microbiology, P.O. Box 56, University of Helsinki, Finland, 00014. Search for
microorganism. Coal solubilization is expected to occur in nutrient rich media whereas depolymerization of solubilized coal macromolecules is expected to occur in nutrient limited media. 3 To determine the role of extracellular enzymes laccases, lignin peroxidases and Mn peroxidases that are secreted by lignin degrading fungi during coal ...
Depolymerization and solubilization of chemically pretreated powder river basin subbituminous coal by manganese peroxidase MnP from Bjerkandera adusta Fuel Journal October 1, 2013 Other authors
fundamental questions are in what extent the coal polymers can be solubilized and depolymerized and how is the bioavailability of these constituents. Our research effort is to optimize the solubilization and depolymerization of coals by a variety of means, including physical, chemical and enzymatic methods. The objectives of our research will
Oct 01, 2013 The enzymatic depolymerization and solubilization of pretreated coal was carried out in the same 1.5-ml HPLC vials at ambient temperature for 24 h. The reaction system was comprised of a sodium malonate buffer 50 mM, pH 4.5, MnCl 2 25 mM, 1 total Unit MnP 1 U ml 1 , dimethylformamide 0.05 and H 2 O 2 stock solution 150 mM, 2 l h 1 .
Solubilization of the coal or lignocellulosic materials can be carried out in a subterranean formation, in a terrestrial formation or in an ex situ reactor. The solubilization process requires a temperature ranging from ambient temperature to up to 500 C. and a pressure in a
Biological coal conversiondegradation can be classified into three mechanisms solubilization, depolymerization, and utilization. Coal solubilization occurs in the presence of alkaline substances, chela-tors, and surfactants, resulting in a black liquid. Coal depolymer-ization utilizes enzymes that function at a pH lower than 6. On the
Solubilization of Miike bituminous coal was mainly the result of depolymerization by cleavage of methylene bridges, while in Yallourn lignite, deoxygenation as well as depolymerization was required for solubilization. Most of the remaining BF3 probably formed complexes with the
microorganism. Coal solubilization is expected to occur in nutrient rich media whereas depolymerization of solubilized coal macromolecules is expected to occur in nutrient limited media. 3 To determine the role of extracellular enzymes Iaccases, lignin peroxidases and Mn peroxidases that are secreted by lignin degrading fungi during coal ...
microorganism. Coal solubilization is expected to occur in nutrient rich media whereas depolymerization of solubilized coal macromolecules is expected to occur in nutrient limited media. 3 To determine the role of extracellular enzymes laccases, lignin peroxidases and Mn peroxidases that are secreted by lignin degrading fungi during coal ...
solubilization, thermal ejection from the liquid intermediate. ... signicant geochemical precursor to coal.57 Thus, a clear characterization of lignin depolymerization can have a strong impact on the foundational knowledge for bio- and thermochemical woody biomass conversion strategies. Due
Promoting Effect of Sodium Chloride on the Solubilization and Depolymerization of Cellulose from Raw Biomass Materials in Water ChemSusChem. 2015 Jun 88111901-7. doi 10.1002cssc.201500158. Epub 2015 Apr 27. Authors Zhicheng Jiang 1 ...
US4914024A US07146,622 US14662288A US4914024A US 4914024 A US4914024 A US 4914024A US 14662288 A US14662288 A US 14662288A US 4914024 A US4914024 A US 4914024A Authority US United States Prior art keywords coal bacterial culture solubilization medium sup Prior art date 1988-01-21 Legal status The legal status is an assumption and is not a legal conclusion.
Oct 03, 2016 In addition, hydrogen peroxide mediated depolymerization of the dissolved lignin at a low temperature 80 C was tested and the effect of EG molecules on depolymerization of lignin was also theoretically studied. The findings of this work provide mechanistic insights of hydrogen bond interactions in high lignin solubilization and valorization.
Oct 03, 2016 In addition, hydrogen peroxide mediated depolymerization of the dissolved lignin at a low temperature 80 C was tested and the effect of EG molecules on depolymerization of lignin was also theoretically studied. The findings of this work provide mechanistic insights of hydrogen bond interactions in high lignin solubilization and valorization.
Oct 01, 2009 Sucrose was the best suitable carbon source for coal depolymerization by P. djamor and sodium nitrated followed by urea was the best nitrogen source. The Chelators like salicylic acid, TEA and metal ions Mg , Fe , Ca , Cu , Mn has enhanced the lignite solubilization process.
Dec 22, 1996 Quarterly report, October 1--December 31, 1996, author Mishra, N C, abstractNote In order to develop a system for a large scale coal solubilization and its bioconversion to utilizable fuel, the author plans to clone the genes encoding Neurospora protein that facilitate depolymerization of coal. He also plans to use desulfurizing bacteria to remove the sulfur in situ and use other microorganisms to convert biosolubilized coal
