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Bioprocessing and Biotreatment of Coal by Wise

By Wise

Inside technical evaluation sections on such rising parts as bioprocessing, bioconversion, biosolubilization, biosystems and biocleaning, this handsomely illustrated reference in particular surveys pioneering paintings within the genetic creation of sulfatase enzymes for removal natural sulfur from coal; r

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Efforts should continue in all these areas to provide supporting information for later development of efficient processes as well as to enlarge the selection of organisms for future applications.  In addition, the focus can now shift from the collection of new organisms to modifications to existing cultures through acclimation or through the use of genetic engineering techniques.  Several existing laboratory efforts are now ready for transfer to this stage.  Some discussion of these factors has occurred in relation to microbial coal processing and it is expected that these discussions will increase as progress is made at earlier stages of research.

Sulpholobus acidocaldarius is a thermophilic organism with an optimal temperature range of around 70 to 80°C.  Simply because the coal molecule is large and Page 33 the substance is such a heterogeneous mixture, coal does not appear to be an ideal material for biological attack.  There may be trace elements that will be toxic to various microorganisms [27].  A third would be the removal of sulfur, nitrogen, or metals from the coal before combustion, which would reduce unwanted emissions [40].  In addition, the phenomenon of methane formation in coal seams is well known and the feasibility of the biogasification of peat was demonstrated in the 1920.

Appropriate planning schedules must be developed so that this work can keep pace with organism development at the biochemical research stage of the research plan.  This often occurs because of the absence of suitable host animals or plants or the absence of suitable environmental conditions at the release site.  In addition to dispersion, any organism—including engineered organisms—presents a problem only if it can grow and persist in the natural environment.  The current data base must be expanded for accurate prediction of which organisms will and will not proliferate and survive.

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