Characterization and Evaluation of a Denitrifying and Sulfide Removal Bacterial Strain Isolated From Daqing Oilfield
Characterization and Evaluation of a Denitrifying and Sulfide Removal Bacterial Strain Isolated From Daqing Oilfield
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DOI：
10.1080/10916466.2014.1003941
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发表时间：
2015-03
影响因子：
1.5
通讯作者：
F. Zhao;R. Shi;J. Zhang;S. Han;F. Ma;Y. Zhang
中科院分区：
文献类型：
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作者：
F. Zhao;R. Shi;J. Zhang;S. Han;F. Ma;Y. Zhang
硫酸盐还原菌（SRB）和硫化氢广泛存在于石油开采系统中，对石油开采工业造成严重危害。从大庆油田分离到一株厌氧除硫细菌，经鉴定为施氏假单胞菌DQ 1。在温度20-40°C，pH 6.5-8.0，盐度0-50 g/L NaCl条件下，玉米淀粉酶DQ 1生长良好。菌株DQ 1能完全去除50.0mg/L以下的硫化物，并能使SRB数量减少近4个数量级。菌株DQ 1在采油系统中的生物强化将为大庆油田硫酸盐还原菌的同时抑制和硫化物的去除提供一条很有前途的途径。
Sulfate-reducing bacteria (SRB) and hydrogen sulfide were widely present in oil production systems, which are detrimental to oil exploitation industry. An anaerobic denitrifying and sulfide removal bacterial strain, identified as Pseudomonas stutzeri DQ1, was isolated from Daqing Oilfield. Starin DQ1 grew well at temperatures 20–40°C, pH 6.5–8.0, and salinity 0–50 g/L of NaCl. Strain DQ1 can completely remove sulfide less than 50.0 mg/L, and decrease the SRB numbers nearly four orders of magnitude. Bioaugmentation of strain DQ1 in oil production system will be a promising approach for simultaneous inhibition of SRB and removal of sulfide in Daqing Oilfield.