MICROBIAL DESULFURIZATION OF COAL
作者： Lu-Kwang Ju
DOI: 10.1080/08843759208916050
关键词: Ferrous 、 Sulfate 、 Carbochemistry 、 Oxidizing agent 、 Pyrite 、 Coal 、 Chemistry 、 Organic chemistry 、 Flue-gas desulfurization 、 Sulfur
摘要: ABSTRACT The sulfur found in coal is generally divided into three forms: pyritic, sulfate, and organic sulfur. Originating from irt-situ oxidation of metal sulfides, sulfates axe present at low concentrations. Being soluble water, they are relatively easy to be leached the coal. Similarly, microbial depyritization promotes oxidative conversion inorganic compounds water-soluble products. pyrite removal results combined effects direct bacterial attack indirect chemical solubilization. In former, (FeS2) oxidized by bacteria Fe2(SO4) 3; latter, ferric iron actual oxidizing agent microorganisms serve regenerate ferrous iron. Organic chemically bound carbon skeleton It believed mainly forms disulfides, thiols thiophenes. Two pathways have been proposed for desulfurization heterocycles. One emphasized oxidatio...
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