微生物诱导下甲烷厌氧氧化及碳酸盐矿物生成实验

来源期刊:中南大学学报(自然科学版)2016年第5期

论文作者:许天福 刘肖 魏铭聪 温玉娟 金光荣 曹玉清

文章页码:1473 - 1480

关键词:甲烷氧化菌;甲烷厌氧氧化;碳酸盐矿物

Key words:methane oxidizing bacteria; anaerobic oxidation of methane; carbonates

摘    要:从淤泥样品中,培育甲烷氧化菌并对其进行DNA测序;进而在自行研制的反应系统中开展甲烷氧化菌-水-岩石相互作用实验,检测微生物的数量和HCO3-质量浓度的变化,最后对岩石样品进行扫描电镜分析。研究结果表明:所培养的淡水甲烷氧化菌为假单胞菌属;微生物注入反应器后有HCO3-的生成,HCO3-质量浓度变化与微生物数量和活性有关;石英砂表面生成无定形铁白云石、亮白色菱柱状碳酸盐和长石类矿物的中间产物。

Abstract: The methane oxidizing bacteria was isolated from lake bottom sediment and the corresponding DNA sequencing was carried out. Experiment of interaction between methane oxidizing bacteria-water-rock was conducted in a self-developed reactor system, and variations of the number of microorganisms and the mass concentration of HCO3- were analyzed, respectively. Finally, rock slices were viewed with scanning electron microscope (SEM). The results show that the cultured methane oxidizing bacteria belongs to pseudomonas genus. HCO3- produced after bacteria injected into the reactor. Changes of mass concentration of HCO3- have certain correlation relationship with the number and microbial activity of microorganism. Intermediate minerals, including amorphous ankerite, bright columnar of carbonate and feldspars, are precipitated on the surface of quartz sandstone.

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