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Organisationseinheit der BAM
Microbiologically influenced corrosion (MIC) of iron is usually attributed to sulfate-reducing microorganisms, either chemically (formation of hydrogen sulfide) or electrically (direct electron uptake). Methanogenetic Archaea are also known to be involved in iron corrosion, forming a multi-species biofilm on corroding metallic structures. However, mechanistic details and kinetics of the overall process in methanogen-induced MIC are poorly understood.
Additive manufacturing (AM) offers an effective solution to the medical sector. It enables the production, on demand, of customised implants which match the patient’s anatomy, with grafts that promote bone growth, as well as surgical guides that help the surgeons. The objective of this project is to provide a comprehensive basis to enable the safe use of medical AM products with traceable and reliable dimensionalmeasurements. This will guarantee the reliability of medical AM products to notified bodies and facilitate acceptance of AM in the medical sector for a better quality of life.
Different environmental samples reveal that methanogenic Archaea are part of a
multi-species biofilm on corroding metallic structures (Fig. 1). Studies on microbial
influenced corrosion (MIC) focus mainly on sulphate reducing Bacteria (SRB),
leading to the assumption that they are exclusively responsible for metal corrosion.
In fact, methanogenic Archaea are known to be involved in metal corrosion as well
(e.g.Methanococcus maripaludis DSM 2067). In some cases SRB and methanogenic
Archaea have comparable high corrosion rates. However, the underlying
mechanisms causing corrosion are still unknown. The goal of this study is to
analyse two environmental isolates (M. maripaludis DSM 2067, M. maripaludis
KA1) and two human-related isolates (Methanobrevibacter oralis and
Methanobrevibacter smithii) for their ability to deteriorate/transform metals,
which are relevant for technical and clinical applications. Moreover, the studies will
provide essential information on the interaction mechanisms of human-related
Archaea, which are frequently found in peri-implantitis, with dental material such
as implants, crowns and bridges leading to their degradation/transformation.
Different environmental samples reveal that methanogenic Archaea are part of a multi-species biofilm on corroding metallic structures (Fig. 1). Studies on microbial influenced corrosion (MIC) focus mainly on sulphate reducing Bacteria (SRB), leading to the assumption that they are exclusively responsible for metal corrosion. In fact, methanogenic Archaea are known to be involved in metal corrosion as well (e.g. Methanococcus maripaludis DSM 2067). In some cases SRB and methanogenic Archaea have comparable high corrosion rates. However, the underlying mechanisms causing corrosion are still unknown. The goal of this study is to analyse two environmental isolates (M. maripaludis DSM 2067, M. maripaludis KA1) and two human-related isolates (Methanobrevibacter oralis and Methanobrevibacter smithii) for their ability to deteriorate/transform metals, which are relevant for technical and clinical applications. Moreover, the studies will provide essential information on the interaction mechanisms of human-related Archaea, which are frequently found in peri-implantitis, with dental material such as implants, crowns and bridges leading to their degradation/ transformation.