TY - CONF A1 - Koerdt, Andrea T1 - The Power of networks – COST Action CA20130 N2 - For optimal research on microbiologically influenced corrosion (MIC), balanced and interdisciplinary cooperation is extremely important. However, differing perspectives, thought processes, and even variations in nomenclature/terminology often hinder the establishment of effective collaborations. Over the past four years, COST Action Euro-MIC (CA20130) has effectively addressed these discrepancies. Through regular meetings, conferences, and scientific exchanges, a large international network has been established. Many scientific findings and results have been achieved through scientific, interdisciplinary exchange within the international network. The upcoming presentation will highlight three examples (among many others) that have resulted in successful collaborations, third-party funding applications, publications, or outstanding results and emphasize that successful results in MIC research, facilitated by an interdisciplinary network, can lead more quickly to meaningful and application-oriented findings. Project 1&2 describe two different kinds of Projects related to the use of Nanoparticles; one is about the efficacy testing of novel Nanoparticles. Project 2 deals about how to apply already working and tested nanoparticles to different materials and conditions. Project 3a is related to the energy sector; a crucial part of our society, and currently undergoing significant changes. Climate change, rising temperatures, increased use of fertilizers and other environmental pollutants have led to an increasing occurrence of microorganisms and contamination in some sectors. But how we deal with “baggage” from the past and store nuclear waste without harm or risk for human and environment, but also how to transfer the gained knowledge to areas like safe Hydrogen storage in geological underground formation. T2 - ISMOS10 CY - Nashville, TN, USA DA - 11.08.2025 KW - COST Action CA20130 KW - MIC KW - STSM Grants KW - Networking PY - 2025 AN - OPUS4-64295 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Euro-MIC COST Action CA20130 Closing Workshop & Conference N2 - Ensuring the safety of offshore wind structures (OWS) is critical to guaranteeing their long-term performance and supporting reliable green energy supply. Microbiologically influenced corrosion (MIC) presents a significant challenge, particularly for monopiles in seabed environments. This study investigates the behavior of microorganisms and their impact on the corrosion process of carbon steel within monopiles. To simulate MIC at the sediment/water interface, an in-house experimental column was developed and inoculated with sediment and water samples from the North Sea. The system was operated under varying flow rates to replicate seabed movement conditions. Multiple molecular microbiological methods, surface analysis techniques, and other approaches were employed to assess the effects of different treatments. This study provides insights into MIC mechanisms in offshore environments and supports the development of strategies to monitor MIC in OWS infrastructure T2 - Final COST Action Conference - Horsens CY - Horsens, Denmark DA - 17.09.2025 KW - MIC KW - COST Action Euro-MIC KW - Interdisciplinarity PY - 2025 AN - OPUS4-64299 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Cost action EURO MIC (CA20130) N2 - Vorstellung des vor kurzen angelaufenen EU-Projekts: COST ACTION EURO MIC ( CA20130). Die BAM hat hierbei die Rolle des Chairs sowie Grant-Holding Institute. COST fördert internationale Netzwerk Aktivitäten. Durch COST Action können neue Kooperationen (Industrie, Akademie oder Politk) entstehen. T2 - Dechema CY - Online meeting DA - 10.11.2021 KW - Netzwerk KW - COST KW - Mikrobiell beeinflusste Korrosion KW - MIC PY - 2021 AN - OPUS4-54023 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Euro-MIC 2021-2025, our journey, and paths forward N2 - Microbiologically Influenced Corrosion (MIC) refers to the detrimental effects on materials caused by microorganisms, and it is becoming an increasingly significant issue for society. Unlike the USA, Canada, and Australia, Europe has less developed cooperation on MIC. Although several research groups and industrial stakeholders are addressing MIC, discussions remain fragmented, and information exchange is limited. A truly transdisciplinary approach is rarely seen. As a result, Europe often relies on methods, preventive measures, and standards from other regions, as there are no equivalent European standards. This situation makes Europe a) highly dependent, and b) in some cases, unable to use certain measures or standards due to European legal restrictions (e.g., the use of biocides). In 2021, researchers established the “Euro-MIC” network, financially supported by the EU project “COST-Action,” to tackle these issues. Through COST-Action, Euro-MIC aims to facilitate necessary interactions, communication, knowledge sharing, and training for personnel and researchers across various disciplines. COST-Action supports network activities, workshops, training schools, conferences, and more. Euro-MIC aspires to position Europe as a leader in MIC, promoting ideas on par with other nations while upholding European values and ensuring greater protection for people, property, and the environment. In this presentation, I will briefly introduce the principles of COST Action and highlight the significant opportunities provided by this EU-funded project. COST Action fosters interdisciplinarity, networking, training, scientific exchange, and the promotion of young scientists. By showcasing some examples of CA20130 COST ACTION Euro-MIC, I hope to demonstrate that COST Action is not only relevant for addressing MIC but can also be applied to other important topics and sectors. T2 - Unseen Corrosion: Unveiling Hidden Threats and Innovating Monitoring Solutions CY - Bergen, Norway DA - 15.05.2025 KW - COST Action CA20130 KW - MIC KW - Network KW - Corrosion KW - Microorganisms PY - 2025 UR - https://www.norceresearch.no/en/events/unseen-corrosion AN - OPUS4-63726 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Mikrobiell beeinflusste Korrosion (MIC) – Wenn MIC dann BAM N2 - In dieser Präsentation wurden dem Beirat Umwelt die High-Lights und der weitere Ausblick des Foresight Process MIC vorgestellt. Im Fokus stehen hierbei insbesondere die neu angelaufenen Projekte: COST Action Euro-MIC MIC im Endlager Hydrogen: MIC & Wasserstoffversprödung Biorezeptivität von Betonoberflächen Mitigation schwarze Pilze WIPANO ResTest T2 - Beirat Umwelt CY - Online meeting DA - 11.03.2022 KW - MIC KW - Hi-Tension KW - Projekte PY - 2022 AN - OPUS4-54463 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - COST-Action - EURO-MIC (CA20130) European MIC Network - New paths for science, sustainability and standards N2 - Microbiologically Influenced Corrosion (MIC) is a phenomenon that is increasingly becoming a problem for the society. MIC describes the negative effects a material can experience due to the presence of microorganisms. In Europe, several research groups/ other industrial stakeholders are already dealing with MIC. Unfortunately, the discussions are fragmented and the exchange of information is limited. A true transdisciplinary approach is hardly ever experienced, although this would be logical for this material/biology related challenge. USA, Canada and Australia have strong networks, and develop methods, prevention measures and standards, which Europe is forced to use, since nothing similar exists for a network and combined knowledge to design them according to european standards. This makes Europe extremely dependent and, in some cases, the potential measures or standards cannot been used because the suggested solutions are prohibited by European laws (e.g. use of biocides). Therefore, it is important to initiate a new European MIC-network. Europe needs to combine the efforts as experts in different fields and develop prevention measures according to the European rules, in close cooperation with industry and plant operators and owners of critical infrastructure. This COST Action will provide the necessary interaction and communication, knowledge sharing, training of personnel and of researchers of different disciplines. This will bring Europe to a leading role in this process, bringing ideas on an equal level with other nations, considering the values which are important for Europe and attitudes (e.g.environmental protection) and representing greater protection for people, property and the environment. The main aim and objective of the Action is to , in the context of MIC-research/control, encourage a fluent/synergistic collaboration/communication, closing the gap between materials scientists, engineers, microbiologists, chemists and integrity managers to encourage sufficient interaction between academia and industry. This Action will create a common MIC-Network, including the important stakeholders. T2 - EuroCorr CY - Online meeting DA - 19.09.2021 KW - COST Action KW - MIC KW - Interdisciplinary KW - Stakeholder KW - Academia PY - 2021 AN - OPUS4-53382 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Wasserstofflagerung in unterirdischen geologischen Formationen und potenzielle Risiken durch Mikroorganismen N2 - Bei dem Vortrag werden die potentiellen mikrobiologischen Einflüsse im Falle der Lagerung von Wasserstofflagerung in unterirdischen geologischen Formationen vorgestellt, die Zusammenarbeit mit internen und auch externen Partnern. Der Fokus liegt dabei auf UGF; anaerobe Umgebungen, Sulfate reduzierenden Bakterien, methanogenen Archaea, weiterleitenden Systeme und die Kombination der Untersuchung abiotisch/biotische T2 - VDI-Schadensanalyse (49) CY - Würzburg, Germany DA - 17.10.2023 KW - MIC KW - Wasserstofflagerung KW - Unterirdische Speicher KW - Kontamination von H2 KW - H2-Abbau KW - Mikroorganismen KW - Biotische/abiotische Faktoren PY - 2023 AN - OPUS4-58645 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Mikrobielle Zusammensetzung im Wassertank N2 - Der Fachbereich 7.6 untersucht seit einiger Zeit an Auslagerungsständen auf dem Testgelände in Horstwalde Korrosion im maritimen Bereich. Im Moment läuft das System mit künstlichem Meerwasser und simuliert die Bewitterung von Metallproben unter angenäherten klimatischen Bedingungen ähnlich zum natürlichem Habitat. Im Laufe der Zeit konnte nicht intendierter mikrobieller bewuchs beobachtet werden. Es stellte sich die Frage, welche Mikroorganismen vorlagen und ob diese einen Einfluss auf die Korrosionsuntersuchungen haben könnte. Aus diesem Grund wurden 16S-rRNA Untersuchungen durchgeführt welche alle drei Domänen des Lebens widerspiegeln Bakterien, Archaea und Eukaryoten. Es konnte gezeigt werden, dass über 95% der vorliegenden Biomasse Grünalgen waren, die durch Licht Eintrag in den Container Photosynthese betrieben und dadurch an Biomasse zunahmen. Des weiteren konnten Bakterien detektiert werden, welche in der Regel halophilen und aeroben Habitaten zu finden sind. Allerdings wurden auch Sulfat reduzierende Bakterien (MIC) detektiert, wenn auch in einem geringen prozentualen Anteil. Es muss allerdings Berücksichtigt werden, dass die mikrobielle Zusammensetzung sich im Laufe der Zeit weiter ändern kann. Als Ursprung der Biomasse wird, das künstliche Sediment vermutet. Außerdem wäre es für zukünftige Experiment denkbar, das System mit echtem Sediment aus dem marinen Habitat anzuimpfen. T2 - Dechema CY - Online meeting DA - 10.11.2021 KW - Mikroorganismen KW - Mikrobielle Gemeinschaft KW - Korrosion KW - Simulation PY - 2021 AN - OPUS4-54035 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Mikrobiell beeinflusste Korrosion (MIC) N2 - Präsentation des Themenfeldprojekt MIC innerhalb des Themenfeld Material, mit Schwerpunkt auf dem aktuellem Status.Präsentiert würden die neusten Ergebnisse bei der Entwicklung von optischen Nanosensoren sowie der mikrobiologische Zerstörung/Abbau von Kraftstoffen und Tanksystemen. Vorstellung eines neuen Themenbereichs: Der Mikrobiell beeinflussten Korrosion durch methanogene Archaea. T2 - DECHEMA-GfKORR-Fachgruppe CY - Berlin, Germany DA - 04.10.17 KW - Korrosion KW - Optischer Nanosensor KW - Polymere KW - Farbstoffe KW - UV-Bestrahlung KW - Kraftstoffe KW - Biodiesel KW - Metalle KW - pH-sensitiver Farbstoff PY - 2017 AN - OPUS4-42493 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Mikrobielle Einflüsse auf Wasserstoffspeicherung: Materialien, Abbauprozesse und Teststrategien N2 - Wasserstoff gilt als Schlüsseltechnologie für die Energiewende – doch seine sichere Anwendung stellt neue Anforderungen an Technik, Infrastruktur und Personal. Die Veranstaltung „H₂ Sicherheit“ bietet eine umfassende Plattform, um sich über die sicherheitsrelevanten Aspekte von Wasserstoff zu informieren und praxisnahe Lösungen kennenzulernen. Expert:innen aus Forschung, Industrie und Netzbetrieb geben Einblicke in aktuelle Entwicklungen, Herausforderungen und Best Practices. Fokus dieser Präsentation war der Mikrobielle Einfluss bei der unterirdischen Speicherung von Wasserstoff und das neuartige Testsystem (MISTRAL) T2 - DVGW- H₂ Sicherheit | 26. – 27. November 2025 CY - Online meeting DA - 26.11.2025 KW - MIC KW - MISTRAL KW - Hochdruckbehälter KW - Wasserstoff KW - Unterirdische geologische Formationen PY - 2025 AN - OPUS4-64890 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Hydrogen storage & Microbiologically influenced corrosion - Improved test system for Stability and Durability of the Materials & Gas N2 - Underground hydrogen storage (UHS) is a strategic step towards implementing the hydrogen economy. Achieving the required infrastructure by 2050 necessitates advancements in hydrogen-dedicated assets and the evaluation of existing infrastructure. The unique conditions in UHS require an experimental set-up to simulate UHS operating conditions, which allows to assess the readiness of current storage and transmission for hydrogen, and develop new technologies for material-resistance, operational-simulations, and risk-assessments. In addition to the physical/chemical conditions in UHS (e.g., salinity, hydrogen concentration, operating temperature/-pressure, water content), biological threats must also be considered. Therefore, we present here a high-pressure-set-up, developed for research/-industrial testing purposes. Currently, UHS-experiments for microbiologically-influenced-corrosion (MIC) are performed in standard autoclaves with relatively high volumes/pressures; they were primarily designed for material-specific investigations. While these methods provided some useful information for biological questions, they had significant limitations. Besides, the rapid depressurization that occurs with standard autoclaves can greatly affect materials, especially amorphous materials like polymers, causing damage that isn't due to the actual hydrogen storage. This presents a challenge, as the test results may not accurately reflect real-world conditions. To address these issues, specialized autoclaves have been developed to allow for slower depressurization while also enabling continuous monitoring of gases and liquids during the experiment. Such modifications could help obtain more accurate and reliable data. The novel UHS-simulation-set-up presented here is designed with a controlled independently temperature and pressure. Field samples can be used to mimic geology, water chemistry, construction materials, and microbiological conditions. Most significant advantages of the set-up are: 1. It allows for liquid addition during the test, enabling the study of biocides or the evaluation of operating setups. 2. It permits liquid/-gas sampling during the test, allowing for more efficient monitoring of testing conditions and a better understanding of the process over time. Additionally, a low-release function is added, which is particularly important for studying MIC to avoid negative side effects, on the material (e.g. polymers/corrosion product-layer/cells itself) which might occur due to the fast pressure release. T2 - MATHEA | MATerials in Hydrogen related Energy Applications 2025 CY - Hamburg, Germany DA - 24.06.2025 KW - MIC KW - MISTRAL KW - Underground storage KW - Hydrogen KW - Polymer KW - Metal PY - 2025 AN - OPUS4-63567 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - The impact and potential of halophilic microorganisms on alternative fuels N2 - As more industrial interests focusing on using salt caverns and repurposed gas or petroleum reservoirs for alternative fuel storage, i.e. CO2/H2, the question raises whether microorganisms may impact the infrastructure, gas purity and storage condition over time. Environments with high salinity (> 1.5 Meq of NaCl) are resided by halophiles (salt-loving microorganisms). To compensate for the intensive osmotic stress, they have resorted to two main adaptation strategies: 1) production of compatible solutes and 2) accumulation of intracellular KCl. Microbial community analysis of several high salinity environments revealed a number of recurring genera, including Halomonas and Halanaerobium. However, the impact of halophiles on the overall integrity and stability of the storage facilities remain largely unknown. To evaluate the suitability and stability of saline storage facilities, several model halophilic microorganisms, such as members of Halomonas, will be selected as testing subjects. First, the impact of halophiles on the infrastructure will be determined using an integrative approach by combining a number of techniques, including electrochemistry, TOF-SIMS, SEM/FIB/EDS and FIB-TEM. Second, the abilities of halophiles to alter the fuel composition (i.e. increase/decrease the fractions of H2) will be monitored using gas chromatography by growing them under high pressure. As a result of climate change and the accompanying mandatory shift to renewable energy resources, microorganisms will continue to play an important role in the energy sector, both to their benefit and detriment. Thus, it is important to achieve a certain level of understanding regarding the activities and mechanisms of halophiles prior to large-scaled excursions. T2 - ISMOS-8 CY - Online meeting DA - 07.06.2021 KW - Microbiologically influenced corrosion KW - Hydrogen KW - Gas storage KW - Contamination PY - 2021 AN - OPUS4-52891 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Investigation of methanogen-induced microbiologically influenced corrosion (Mi-MIC) using simulated marine environments under flowing conditions N2 - Microbiologically influenced corrosion (MIC) of iron is usually attributed to sulfate-reducing microorganisms (SRM) in offshore industries, such as the oil and gas pipelines, due to the high concentrations of sulfate in the seawater. SRM act upon the metal by the reactiveness of hydrogen sulfide (HS-), and by withdrawal of the available electrons (Fe --> Fe2+ + 2e-; E° = -0.47 V) in electrical contact with the metal (EMIC). However, methanogenic archaea can also cause MIC. Because they do not produce HS-, withdrawal of electrons may be their main corrosive mechanism; however, mechanistic details and kinetics of the overall process are poorly understood. To investigate the corrosion potential of methanogens, we studied the EMIC methanogenic strains isolated from marine sediments (Methanobacterium-affiliated strain IM1) and crude oil tanks (Methanococcus maripaludis Mic1c10), in an in-house developed flow-through cell to simulate a fluctuating environment. A co-culture of M. maripaludis and D. alaskensis was also established to study the effect of syntrophic growth on metal corrosion that may occur in industrial pipelines. Results indicate that the rates of iron corrosion due to coupled methanogenesis (up to 0.4 mm/yr) are higher to that caused by the marine SRM Desulfovibrio alaskensis (0.15 mm/yr). Surface analyses of the metal showed severe pitting with high methane production. Genomic analysis of the EMIC methanogen M. maripaludis Mic1c10 will provide an insight on the mechanisms of MIC. Such knowledge and deeper understanding also from an electrokinetic point of view may not only provide further models in microbial electrophysiology, but also contribute to mitigation strategies in MIC T2 - Einladung zum Kolloquium HZDR – Helmholtz-Zentrum Dresden-Rossendorf CY - Dresden, Germany DA - 24.09.2019 KW - Corrosion KW - MIC KW - Archaea KW - Methanogens KW - Environmental Simulation PY - 2019 AN - OPUS4-49403 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Investigation of methanogen-induced microbiologically influenced corrosion (Mi-MIC) using simulated marine environments under flowing conditions N2 - Microbiologically influenced corrosion (MIC) of iron is usually attributed to sulfate-reducing microorganisms (SRM) in offshore industries, such as the oil and gas pipelines, due to the high concentrations of sulfate in the seawater. SRM act upon the metal by the reactiveness of hydrogen sulfide (HS-), and by withdrawal of the available electrons (Fe --> Fe2+ + 2e-; E° = -0.47 V) in electrical contact with the metal (EMIC). However, methanogenic archaea can also cause MIC. Because they do not produce HS-, withdrawal of electrons may be their main corrosive mechanism; however, mechanistic details and kinetics of the overall process are poorly understood. To investigate the corrosion potential of methanogens, we studied the EMIC methanogenic strains isolated from marine sediments (Methanobacterium-affiliated strain IM1) and crude oil tanks (Methanococcus maripaludis Mic1c10), in an in-house developed flow-through cell to simulate a fluctuating environment. A co-culture of M. maripaludis and D. alaskensis was also established to study the effect of syntrophic growth on metal corrosion that may occur in industrial pipelines. Results indicate that the rates of iron corrosion due to coupled methanogenesis (up to 0.4 mm/yr) are higher to that caused by the marine SRM Desulfovibrio alaskensis (0.15 mm/yr). Surface analyses of the metal showed severe pitting with high methane production. Genomic analysis of the EMIC methanogen M. maripaludis Mic1c10 will provide an insight on the mechanisms of MIC. Such knowledge and deeper understanding also from an electrokinetic point of view may not only provide further models in microbial electrophysiology, but also contribute to mitigation strategies in MIC T2 - Archaea Meeting-Schmitten VAAM Fachgruppe CY - Schmitten, Germany DA - 12.09.2019 KW - Corrosion KW - MIC KW - Archaea KW - Methanogens KW - Environmental Simulation PY - 2019 AN - OPUS4-49405 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea A1 - An, Biwen Annie T1 - Investigation of methanogen-induced microbiologically influenced corrosion (Mi-MIC) using simulated marine environments under flowing conditions N2 - Microbiologically influenced corrosion (MIC) of iron is usually attributed to sulfate-reducing microorganisms (SRM) in oil and gas facilities. SRM act upon the metal by the re-activeness of hydrogen sulfide (HS-), and by withdrawal of the available electrons in electrical contact with the metal (EMIC). Methanogenic archaea (MA) can also cause MIC (Mi-MIC). Several MAs were identified to be corrosive by using elemental iron as the sole electron donor for methanogenesis, including Methanobacterium­-affliated IM1 and Methanococcus maripaludis Mic1c10. Currently, low corrosion rates were reported for MA, possibly due to the formation of siderite (4Fe + 5HCO3- + 5H+ ® 4FeCO3 + CH4 + 3H2O). Since MA do not produce HS-, withdrawal of electrons may be their main corrosive mechanism; however, mechanistic details and kinetics of the overall process are poorly understood. To investigate the corrosion potential of MA, we studied the EMIC methanogenic strains (IM1 and Mic1c10) individually or part of a syntrophic co-culture with SRM. Corrosion studies were conducted using an in-house developed flow-through system to simulate fluctuating environmental conditions. Results indicate that the rates of iron corrosion by MA (up to 0.4 mm/yr) are higher to that caused by the marine SRM Desulfovibrio alaskensis (0.15 mm/yr) and the co-culture (0.1 mm/yr). Scanning electron microscopy (SEM) images of the metal incubated with MA showed severe pitting corrosion. Genomic analysis of the EMIC MA was conducted to provide an insight on the possible cellular mechanisms that could be involved. Furthermore, low concentrations of MA-targeting biocides will be applied to EMIC MA in static and flow conditions to gain insights for possible mitigation strategies. Such knowledge and deeper understanding also from an electrokinetic point of view may not only provide further models in microbial electrophysiology, but also contribute to mitigation strategies in MIC. T2 - 7th International Symposium on Applied Microbiology and Molecular Biology in Oil Systems CY - Halifax, Canada DA - 18.06.2019 KW - MIC KW - Microbiologically influenced corrosion KW - Methanogens KW - SRB KW - Corrosion KW - Metalls PY - 2019 AN - OPUS4-48392 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Investigation of methanogen-induced microbiologically influenced corrosion (Mi-MIC) using simulated marine environments under flowing conditions N2 - Microbiologically influenced corrosion (MIC) of iron is usually attributed to sulfate-reducing microorganisms (SRM) in offshore industries, such as the oil and gas pipelines, due to the high concentrations of sulfate in the seawater. SRM act upon the metal by the reactiveness of hydrogen sulfide (HS-), and by withdrawal of the available electrons (Fe --> Fe2+ + 2e-; E° = -0.47 V) in electrical contact with the metal (EMIC). However, methanogenic archaea can also cause MIC. Because they do not produce HS-, withdrawal of electrons may be their main corrosive mechanism; however, mechanistic details and kinetics of the overall process are poorly understood. To investigate the corrosion potential of methanogens, we studied the EMIC methanogenic strains isolated from marine sediments (Methanobacterium-affiliated strain IM1) and crude oil tanks (Methanococcus maripaludis Mic1c10), in an in-house developed flow-through cell to simulate a fluctuating environment. A co-culture of M. maripaludis and D. alaskensis was also established to study the effect of syntrophic growth on metal corrosion that may occur in industrial pipelines. Results indicate that the rates of iron corrosion due to coupled methanogenesis (up to 0.4 mm/yr) are higher to that caused by the marine SRM Desulfovibrio alaskensis (0.15 mm/yr). Surface analyses of the metal showed severe pitting with high methane production. Genomic analysis of the EMIC methanogen M. maripaludis Mic1c10 will provide an insight on the mechanisms of MIC. Such knowledge and deeper understanding also from an electrokinetic point of view may not only provide further models in microbial electrophysiology, but also contribute to mitigation strategies in MIC. T2 - VAAM- Annual Conference 2019 of the Association for General and Applied Microbiology CY - Mainz, Germany DA - 17.03.2019 KW - HI-Tension KW - MIC KW - Methanogens KW - Corrosion KW - Sulfate reducing bacteria PY - 2019 AN - OPUS4-47739 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Themenfeld Projekt MIC Mikrobiell beeinflusste Korrosion N2 - Mikrobiell beeinflusste Korrosion (MIC) ist ein Themenfeldprojekt innerhalb der BAM. Das Spektrum der Materialien und der Organismen ist ernorm. In dem Themenfeldprojekt MIC wurden ausgewählte Bereiche tiefergehend untersucht. In der Präsentation werden die Hauptschwerpunkte dargestellt. T2 - Beirat Material CY - Berlin, Germany DA - 03.04.2019 KW - MIC KW - Kraftstoffabbau KW - Kraftstoffbehälter KW - Gesteinskorrosion KW - Metallkorrosion KW - HI-Tension PY - 2019 AN - OPUS4-47740 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Investigation of methanogen-induced microbiologically influenced corrosion (Mi-MIC) using simulated marine environments under flowing conditions N2 - Microbiologically influenced corrosion (MIC) of iron is usually attributed to sulfate-reducing microorganisms (SRM) in offshore industries, such as the oil and gas pipelines, due to the high concentrations of sulfate in the seawater. SRM act upon the metal by the reactiveness of hydrogen sulfide (HS-), and by withdrawal of the available electrons (Fe --> Fe2+ + 2e-; E° = -0.47 V) in electrical contact with the metal (EMIC). However, methanogenic archaea can also cause MIC. Because they do not produce HS-, withdrawal of electrons may be their main corrosive mechanism; however, mechanistic details and kinetics of the overall process are poorly understood. To investigate the corrosion potential of methanogens, we studied the EMIC methanogenic strains isolated from marine sediments (Methanobacterium-affiliated strain IM1) and crude oil tanks (Methanococcus maripaludis Mic1c10), in an in-house developed flow-through cell to simulate a fluctuating environment. A co-culture of M. maripaludis and D. alaskensis was also established to study the effect of syntrophic growth on metal corrosion that may occur in industrial pipelines. Results indicate that the rates of iron corrosion due to coupled methanogenesis (up to 0.4 mm/yr) are higher to that caused by the marine SRM Desulfovibrio alaskensis (0.15 mm/yr). Surface analyses of the metal showed severe pitting with high methane production. Genomic analysis of the EMIC methanogen M. maripaludis Mic1c10 will provide an insight on the mechanisms of MIC. Such knowledge and deeper understanding also from an electrokinetic point of view may not only provide further models in microbial electrophysiology, but also contribute to mitigation strategies in MIC.zeige weniger T2 - Dechema CY - Berlin, Germany DA - 09.04.2019 KW - Corrosion KW - Corrosion products KW - Methanogens KW - Sulfate reducing bacteria KW - Flow-system KW - Environmental simulation PY - 2019 AN - OPUS4-47853 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Investigation of methanogen-induced microbiologically influenced corrosion (Mi-MIC) using simulated marine environments under flowing conditions N2 - Microbially influenced corrosion (MIC) of iron is usually attributed to sulfate-reducing microorganisms (SRM) which act upon the metal by the reactiveness of hydrogen sulfide, and by withdrawal of the available electrons in electrical contact with the metal. Methanogenic archaea can also cause MIC by directly withdrawing electrons from the iron surface for methanogenesis. However, the mechanistic details and kinetics of the overall process are poorly understood. Precipitation of siderite, a by-product of methanogenesis, (4Fe + 5HCO3 + 5H+  4FeCO3 + CH4 + 3H2O) can lead to an insulating layer on the metal surface and lower the corrosion rate. Still, the extent of FeCO3 precipitation may be significantly influenced by environmental conditions such as pH and advective processes. T2 - Dechema CY - Frankfurt a. M., Germany DA - 13.05.2019 KW - MIC KW - Corrosion KW - Methanogens KW - Corrosion product PY - 2019 AN - OPUS4-47982 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - An, Biwen Annie A1 - Koerdt, Andrea T1 - The study of methanogen-induced microbiologically influenced corrosion under flow conditions N2 - Microbiologically influenced corrosion (MIC) is an expensive but unpredictable problem for the industries. The most well-known culprit for MIC is the sulfate-reducing microorganisms (SRM), such as members from the genus Desulfovibrio. It has been widely accepted that SRM can contribute significantly to MIC through the production of hydrogen sulfide (HS-) or in some cases a direct electron uptake from the metal surface. However, in a real environmental system, SRM is not exclusive and often involved with other microorganisms that may also contribute to MIC, such as methanogens. Methanogenic archaea can produce methane (CH4) using H2+CO2, formate, methylated amines or acetate. Methanogens are highly abundant in the environment and many are found in very extreme conditions, such as high temperature and high salinity. Previous researches have demonstrated that methanogens are capable of MIC, though the specific mechanisms are still under investigation. In the oil and gas industry, methanogens are not considered as the main contributor for MIC since the corrosion rates are often too low. However, the tests for methanogen-induced MIC are usually performed at static conditions, which cannot represent the system accurately. Here, we developed a novel anaerobic system to evaluate the corrosion potential of methanogens under flow conditions. We will use the Methanococcus maripaludis KA1 strain, which was isolated from a crude oil tank, as the organism of interest. A separate system for Desulfovibrio alaskensis will be established for corrosion rate comparisons. Furthermore, we will study the synergistic effects of M. maripaludis and D. alaskensis on MIC under flow. T2 - Eurocorr 2018 CY - Krakow, Poland DA - 09.09.2018 KW - Mikrobiell beeinflusste Korrosion KW - Methanogen KW - Korrosion KW - Microbiologically influenced corrosion KW - Methanogenesis KW - Flow system KW - Model PY - 2018 AN - OPUS4-46012 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -