Articles | Volume 54
Adv. Geosci., 54, 217–227, 2021
https://doi.org/10.5194/adgeo-54-217-2021
Adv. Geosci., 54, 217–227, 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 et al.

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Short summary
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.