Effect of nitrite on a thermophilic, methanogenic consortium from an oil storage tank.
Samples from an oil storage tank (resident temperature 40 to 60 degrees C), which experienced unwanted periodic odorous gas emissions, contained up to 2,400/ml of thermophilic, lactate-utilizing, sulfate-reducing bacteria. Significant methane production was also evident. Enrichments on acetate gave sheathed filaments characteristic of the acetotrophic methanogen Methanosaeta thermophila of which the presence was confirmed by determining the PCR-amplified 16S rDNA sequence. 16S rDNA analysis of enrichments, grown on lactate- and sulfate-containing media, indicated the presence of bacteria related to Garciella nitratireducens, Clostridium sp. and Acinetobacter sp. These sulfidogenic enrichments typically produced sulfide to a maximum concentration of 5-7 mM in media containing excess lactate and 10 mM sulfate or thiosulfate. Both the production of sulfide and the consumption of acetate by the enrichment cultures were inhibited by low concentrations of nitrite (0.5-1.0 mM). Hence, addition of nitrite may be an effective way to prevent odorous gas emissions from the storage tank.
International Research Institute of Stavanger (IRIS), Akvamiljø, Mekjarvik 12, 4070 Randaberg, Norway. Krista.Kaster@rf.no
Krista M
KM
Kaster
Gerrit
G
Voordouw
D000890:Anti-Infective Agents / Q000494:pharmacology*; D001419:Bacteria / Q000145:classification / Q000187:drug effects* / Q000302:isolation & purification / Q000378:metabolism; D019641:DNA, Archaeal / Q000737:chemistry / Q000235:genetics; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D004783:Environmental Microbiology; D020459:Genes, rRNA; D019344:Lactic Acid / Q000378:metabolism; D008697:Methane / Q000096:biosynthesis*; D019640:Methanosarcinales / Q000145:classification / Q000187:drug effects* / Q000302:isolation & purification / Q000378:metabolism*; D008969:Molecular Sequence Data; D009573:Nitrites / Q000494:pharmacology*; D010084:Oxidation-Reduction; D010578:Petroleum / Q000382:microbiology*; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D013431:Sulfates / Q000378:metabolism
D000890:Anti-Infective Agents; D019641:DNA, Archaeal; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D009573:Nitrites; D010578:Petroleum; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D013431:Sulfates; D019344:Lactic Acid; D008697:Methane