硫酸盐还原菌的去极化作用  

Depolarization Action of Sulfate Reducing Bacteria

作　　者：俞敦义[1] 金永成[1] 刘小武[1] 彭芳明[1] 

机构地区：[1]华中理工大学化学系

出　　处：《材料保护》1998年第7期4-5,共2页Materials Protection

摘　　要：研究了硫酸盐还原菌（ＳＲＢ）在ｐＨ＝７～１２的油田污水中的生长情况，并通过测量油田污水的极化曲线，分析了ＳＲＢ对腐蚀电极过程的影响。结果表明，ＳＲＢ在ｐＨ＝７～９时大量繁殖生长，在ｐＨ＝１１时不能存活。在油田污水中，ＳＲＢ对腐蚀的阳极过程影响不大，对阴极却有显著的去极化作用而加快了钢铁腐蚀。用透射电镜进行形貌观察发现，ＳＲＢ存在二种形态：有鞭毛的弧状菌和无鞭毛的杆状菌。Abstract The growth behavior of sulfate reducing bacteria (SRB) in waste water of oil field (pH=7￣12) was studied,and the effect of SRB on corrosion electrode process was analyzed by polarization curves. The results show that SRB propagates rapidly at pH=7￣9, and can not keep alive at pH=11. In the waste water of oil field, SRB has a little effect on anodic processes,but promotes markedly the cathodic depolarization and then accelerates the corrosion of steel. SRB has two kinds of shapes:the vibrio with flagella and the redshaped bacteria without flagella.

关 键 词：去极化作用 微生物 金属腐蚀 废水测定 SRB 

分 类 号：TG172.7[金属学及工艺—金属表面处理] X832[金属学及工艺—金属学]