Articles | Volume 54
https://doi.org/10.5194/adgeo-54-217-2021
https://doi.org/10.5194/adgeo-54-217-2021
31 Mar 2021
 | 31 Mar 2021

Interactions between the calcium scaling inhibitor NC47.1 B, geothermal fluids, and microorganisms – results of in situ monitoring in the Bavarian Molasse Basin (Germany) and accompanying laboratory experiments

Christoph Otten, Beate Dassler, Sebastian Teitz, Joy Iannotta, Florian Eichinger, Andrea Seibt, Dietmar Kuhn, and Hilke Würdemann

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Methods to characterize type, relevance, and interactions of organic matter and microorganisms in fluids along the flow path of a geothermal facility
Alessio Leins, Danaé Bregnard, Andrea Vieth-Hillebrand, Stefanie Poetz, Florian Eichinger, Guillaume Cailleau, Pilar Junier, and Simona Regenspurg
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-159,https://doi.org/10.5194/bg-2023-159, 2023
Revised manuscript under review for BG
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Cited articles

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Mineral precipitation in filters and heat exchangers can impede geothermal plant operation and cause expensive losses of efficiency. To prevent scaling a biodegradable inhibitor has been applied in a geothermal plant. Water monitoring revealed no significant chemical changes, but an adaption of the microbial community as well as a higher abundance of Bacteria after heat extraction. Laboratory experiments under anaerobic conditions showed that the inhibitor can be almost completely metabolized.