The study of Kansk-Achinsk lignite bioconversion products

Physical and chemical studies of Kansk-Achinsk lignite bioconversion were carried out. The main stages of lignite biotransformation process under the action of biocoenosis of microorganisms consisting of Acinetobacter sp 10, Pseudomonas sp 2 and Pseudomonas sp 57 strains have been defined. At first...

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Bibliographic Details
Published in:Fuel (Guildford) 1996, Vol.75 (2), p.139-143
Main Authors: Golovin, Yu.G., Shchipko, M.L., Kuznetsov, B.N., Golovina, V.V., Eremina, A.O.
Format: Article
Language:English
Subjects:
bioconversion
lignite
products
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Summary:Physical and chemical studies of Kansk-Achinsk lignite bioconversion were carried out. The main stages of lignite biotransformation process under the action of biocoenosis of microorganisms consisting of Acinetobacter sp 10, Pseudomonas sp 2 and Pseudomonas sp 57 strains have been defined. At first the accumulation of microorganisms in the reaction mixture takes place with the growth of H, O, N, S contents in the organic products and with increasing oxygen-containing functional groups and paramagnetic centres concentration. At this stage of bioconversion the oxidation of aliphatic fragments of coal matter takes place over a period of about 20 h. At the second stage of lignite biotransformation, the resources of easily assimilated aliphatic carbon are exhausted and less digestible molecular fragments come into use. The lignite conversion rate and concentrations of oxygen-containing groups and paramagnetic centres fall and the growth of carbon content relative to other elements concentration is observed. At the final stage of lignite bioconversion the chemical composition of products remains practically unchanged and an increase of suspension viscosity takes place.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(95)00195-6