Publication Date:
2011-05-07
Description:
In this study, the operation of a cold store, located in 30–60 m depth in the North German Basin, was investigated by direct counting of bacteria and genetic fingerprinting analysis. Quantification of microbes accounted for 1 to 10⋅10 5 cells per ml fluid with minor differences in the microbial community composition between well and process fluids. The detected microorganisms belong to versatile phyla Proteobacteria and Flavobacteria . In addition to routine plant operation, a phase of plant malfunction caused by filter clogging was monitored. Increased abundance of sulfur-oxidizing bacteria indicated a change in the supply of electron acceptors, however, no changes in the availability of electron acceptors like nitrate or oxygen were detected. Sulfur- and iron-oxidizing bacteria played essential roles for the filter lifetimes at the topside facility and the injectivity of the wells due to the formation of biofilms and induced mineral precipitations. In particular, sulfur-oxidizing Thiothrix generated filamentous biofilms were involved in the filter clogging. Content Type Journal Article Pages 1-12 DOI 10.1007/s00767-011-0165-x Authors Stephanie Lerm, Internationales Geothermiezentrum, Helmholtz-Zentrum Potsdam, GFZ – Deutsches GeoForschungsZentrum, Telegrafenberg, 14473 Potsdam, Germany Mashal Alawi, Internationales Geothermiezentrum, Helmholtz-Zentrum Potsdam, GFZ – Deutsches GeoForschungsZentrum, Telegrafenberg, 14473 Potsdam, Germany Rona Miethling-Graff, Johann Heinrich von Thünen Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei Institut für Biodiversität, 38116 Braunschweig, Germany Markus Wolfgramm, Geothermie Neubrandenburg GmbH (GTN), Seestr. 7A, 17033 Neubrandenburg, Germany Kerstin Rauppach, Geothermie Neubrandenburg GmbH (GTN), Seestr. 7A, 17033 Neubrandenburg, Germany Andrea Seibt, BWG Geochemische Beratung GbR, Seestr. 7A, 17033 Neubrandenburg, Germany Hilke Würdemann, Internationales Geothermiezentrum, Helmholtz-Zentrum Potsdam, GFZ – Deutsches GeoForschungsZentrum, Telegrafenberg, 14473 Potsdam, Germany Journal Grundwasser Online ISSN 1432-1165 Print ISSN 1430-483X
Print ISSN:
1430-483X
Electronic ISSN:
1432-1165
Topics:
Energy, Environment Protection, Nuclear Power Engineering
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Geosciences
