【摘要】 对硫酸盐还原菌D.desulfuricansM6及模型化合物和原油的脱硫活性。苯并噻吩脱硫率高达96%,硫醇低于10%。一些模型化合物的降解受到正十二烷的抑制,石油重馏分的脱硫率高于原油和轻馏分。在微生物还原降解模式中,与脂肪族含硫化合物相比,芳香含硫化合物中的碳硫键易于受到攻击而降解,某些石油样品的低脱硫率源于样品中硫的赋存形态。介绍了DesulfomicrobiumescambiuK114和Desulfovibriolonggreachill213及其同生群在仅有氮气的环境中对模型物的还原降解。更多还原

【Abstract】 This paper reviews activity of sulphate-reducing bacterium Desulfovibrio desul furicans M6 in process removing sulphur from crude oils and model compounds. The microorganism shows different abilities, ranging from 96% for benzo-thiophene to less than 10% for thiols. Some degradations are inhibited in the presence of n-dodecane. More sulphur is removed from heavier fractions than crudes and lighter fractions. It is obvious that sulphur-carbon bonds in aromatic sulphur compounds are more susceptible to the reductive degradation by bacterium than those in the aliphatic sulphur compounds, and that low degrees of desulfurization on some petroleum samples are due to difference of sulphur status. Two strains identified as Desulfomicrobiumescambiu K11-4 and Desulfovibrio long-greachill 2-13, and their consortia are also introduced to degrade model compounds in the presence of only nitrogen gas.更多还原