PortfolioAndreas Kappler
Personendaten
Kontaktdaten
Lebenslauf
Forschungsschwerpunkte
Our group focuses on the interactions of microorganisms and iron-minerals in modern and ancient environments. These interactions also largely determine the fate of harmful organic and inorganic pollutants. Microbial iron-oxidizing and -reducing communities play a key role in iron-mineral formation and transformations. Studying both biological molecular mechanisms and geochemical conditions are crucial to the understanding of these biogeochemical processes. Therefore, we combine microscopic, spectroscopic and molecular techniques with geochemical analysis in order to understand modern and ancient iron biogeochemistry and its environmental impact. In more detail, our projects comprise:
Biogeochemistry and molecular ecology of microbial iron cycling
Microbial magnetite formation – Magnetic susceptibility as indicator for hydrocarbon contamination in the environment and assessment of the reactivity of biogenic minerals for contaminant degradation
Physiology, genetics, high-resolution imaging and spectroscopic analysis of microbial Fe(II) oxidation and iron biomineralization
Humic substances as electron shuttles in microbial/chemical redox processes
Mechanisms of deposition and diagenesis of iron minerals in Banded Iron Formations (BIFs)
Consequences of microbial Fe(II) oxidation and Fe(III) reduction for the environmental behaviour of Cd and As in soil-plant-microbe systems and As drinking water filters
Microbial formation and degradation of halogenated organic compounds
Impact of biochar addition on soil microbial community composition, microbial N-cycling, and contaminant transformation
Projekte
Kooperationen
Fort Collins, Colorado, Vereinigte Staaten
Stanford, California, Vereinigte Staaten
Edmonton, Alberta, Kanada
Pasadena, California, Vereinigte Staaten
Peking, China