EGU22-9238, updated on 28 Mar 2022
https://doi.org/10.5194/egusphere-egu22-9238
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Investigation of Stibnite (Antimony) Scale in Germencik Geothermal Site, Büyük Menderes Graben, Western Turkey

Serhat Tonkul1, Alper Baba2, Mustafa Muammer Demir3, and Simona Regenspurg4
Serhat Tonkul et al.
  • 1Department of Environmental Engineering, İzmir Institute of Technology, 35430, Gülbahçe, Urla, İzmir, Turkey
  • 2Department of International Water Resources, İzmir Institute of Technology, 35430, Gülbahçe, Urla, İzmir, Turkey
  • 3Department of Material Science and Engineering, İzmir Institute of Technology, 35430, Gülbahçe, Urla, İzmir, Turkey
  • 4Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany

Scale problems in geothermal power plants are one of the reasons that reduce power plant efficiency. Silica scaling, calcite scaling, and sulfide scaling are the most common scale types in geothermal power plants. These scale problems in geothermal power plants can be seen in geothermal wells and surface equipment systems. In this context, various measures should be taken to control the scale problems in geothermal power plants. In this study, the stibnite scaling observed in the preheater system of the Germencik geothermal power plant in the west of Turkey is discussed in full detail. Possible types of scale that may occur in the geothermal wells in the power plant were revealed, and the optimum reinjection temperature was determined for stibnite scaling, which reduces the efficiency of the power plant. Within the 3D modeling of the geothermal power plant and different geochemical models, the precautions to be taken at the power plant are examined in all details.

Keywords: Stibnite, Scaling, Binary power plants, Germencik, power plant efficiency

Acknowledgments: This study has received funding from the European Union’s Horizon 2020 research and innovation programme under agreement, REFLECT Project,  No: 850626.

How to cite: Tonkul, S., Baba, A., Demir, M. M., and Regenspurg, S.: Investigation of Stibnite (Antimony) Scale in Germencik Geothermal Site, Büyük Menderes Graben, Western Turkey, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-9238, https://doi.org/10.5194/egusphere-egu22-9238, 2022.