Exploring chemical disposal options for non-condensable gasses in geothermal power plants: A case study of Kizildere geothermal field (Türkiye)

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dc.authorid0000-0002-9469-8870
dc.contributor.authorHaklidir, Fusun S. Tut
dc.contributor.authorCetin, Raziye Senguen
dc.contributor.authorKilincarslan, Sanem
dc.date.accessioned2026-04-04T18:55:30Z
dc.date.available2026-04-04T18:55:30Z
dc.date.issued2024
dc.departmentİstanbul Bilgi Üniversitesi
dc.description.abstractGeothermal power plants are among the most important renewable energy power plants owing to their highcapacity factors and integrated utilization possibilities. Currently, these power plants utilize geothermal fluid to generate electricity. Although their emissions are lower than those of conventional power plants, gasses such as CO2 and H2S are released into the air from the cooling towers, particularly in flash-type geothermal power plants To reduce the emission of CO2 gas released from geothermal power plants, reinjection studies have mainly been carried out around the world. These types of studies require extensive analysis of underground fracture systems, detailed geosciences, and the reservoir studies. However, these studies are considered risky and expensive for most plant operators because possible changes in underground fracture systems may affect the productivity of geothermal production zones. In terms of the environmental impact, hydrogen sulfide is a more harmful gas than CO2. Effective H2S removal methods cannot be widely used, except in areas with extremely high concentrations, because they commonly incur significant costs for plant operators. Effective H2S removal methods are not widely available except for geothermal sites with high concentrations. The fact that local limit values can be exceeded in geothermal power plants with relatively low H2S concentrations, such as geothermal power plants in T & uuml;rkiye, pushes plant operators to find new low-cost solutions due to high operation costs. For this reason, a treatment method that can be applied at every site and whose cost is not too high has not yet been put forward. However, NaOH is used for this purpose in geothermal fields such as steam-dominated Geyser field to increase the pH values in geothermal wells, which has been producing for a long time. In this study, field tests were carried out with five different chemicals and pure water to examine the reduction of non-condensable gasses in a geothermal power plant located in the Kizildere (Denizli, T & uuml;rkiye) geothermal field, one of the most important geothermal fields in the world. According to this, the capture of these gasses is technically possible using chemical methods, with a performance of up to 70 % observed in CO2 gas capture. However, although it is possible to capture 70 % of non-condensable gasses with such chemical methods, the consumable cost of the operation is quite high.
dc.description.sponsorshipScientific Research in Istanbul Bilgi University [2019.02.005]
dc.description.sponsorshipThis study was supported by the 2019.02.005 numbered Scientific Research in Istanbul Bilgi University and in-kind contribution of Zorlu Enerji Company in Turkiye. There have been major changes in our lives during the evaluation process of this article. Therefore, we dedicate this article to our dearest Fatos Tut & Gonul Kilincarslan (you are always with us) and our hope for the future Deniz Cetin.
dc.identifier.doi10.1016/j.geothermics.2024.103077
dc.identifier.doi10.1016/j.geothermics.2024.103077
dc.identifier.issn0375-6505
dc.identifier.issn1879-3576
dc.identifier.scopus2-s2.0-85196309546
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.geothermics.2024.103077
dc.identifier.urihttps://hdl.handle.net/11411/10445
dc.identifier.volume122
dc.identifier.wosWOS:001259019000001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofGeothermics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260402
dc.snmzKA_Scopus_20260402
dc.subjectGeothermal Power Plant
dc.subjectGeothermal Fluids
dc.subjectCarbon Dioxide
dc.subjectHydrogen Sulfide
dc.subjectGas Disposal
dc.titleExploring chemical disposal options for non-condensable gasses in geothermal power plants: A case study of Kizildere geothermal field (Türkiye)
dc.typeArticle

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