NDLI: Effects of nitrate treatment on a mixed species, oil field microbial biofilm

Content Provider	Springer Nature Link
Author	Dunsmore, Braden Youldon, James Thrasher, David R. Vance, Ian
Copyright Year	2006
Abstract	Biofilms of bacteria, indigenous to oil field produced water, were grown in square section, glass capillary flow cells at 45 °C. Initially, in situ image analysis microscopy revealed predominantly coccoid bacteria (length-to-width ratio measurements (l c:w c) of bacterial cells gave a mean value of 1.1), while chemical measurements confirmed sulphate reduction and sulphide production. After nitrate ion addition at 100 and 80 mg/l, in the two repeat experiments respectively, the dominance of rod-shaped bacteria (mean l c:w c = 2.8) was observed. This coincided with the occurrence of nitrate reduction in the treated flow cells. Beneficially, no significant increase in biofilm cover was observed after the addition of nitrate. The dominant culturable nitrate-reducing bacterium was Marinobacter aquaeolei. The l c:w c ratio measured here concurs with previously reported cell dimensions for this organism. Several Marinobacter strains were also isolated from different oil fields in the North Sea where nitrate treatment has been applied to successfully treat reservoir souring, implying that this genus may play an important role in nitrate treatment.
Starting Page	454
Ending Page	462
Page Count	9
File Format	PDF
ISSN	13675435
Journal	Journal of Industrial Microbiology and Biotechnology
Volume Number	33
Issue Number	6
e-ISSN	14765535
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-02-21
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Biofilm Nitrate Sulphate-reducing bacteria Nitrate-reducing bacteria Marinobacter Oil field microbiology
Content Type	Text
Resource Type	Article
Subject	Medicine Bioengineering Applied Microbiology and Biotechnology Biotechnology

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