Acid mine drainage (AMD) emplacements are low-complexity natural systems. Low-pH
conditions appear to be the main factor underlying the limited diversity of the microbial …

The biochemical mechanisms by which microbes interact with extracellular soluble metal
ions and insoluble redox-active minerals have been the focus of intense research over the …

Iron-dependent denitrification is a safe and promising technology for nitrogen removal in
freshwaters. However, the understanding of microbial physiology and interactions during the …

Bioleaching offers a low-input method of extracting valuable metals from sulfide minerals,
which works by exploiting the sulfur and iron metabolisms of microorganisms to break down …

Bioelectrocatalysis using redox enzymes appears as a sustainable way for biosensing,
electricity production, or biosynthesis of fine products. Despite advances in the knowledge of …

Hydrogen can serve as an electron donor for chemolithotrophic acidophiles, especially in
the deep terrestrial subsurface and geothermal ecosystems. Nevertheless, the current …

Biocathodes provide a stable electron source to drive reduction reactions in electrotrophic
microbial electrochemical systems. Electroautotrophic biocathode communities may be …

Among sustainable alternatives to fossil fuel, proton exchange membrane fuel cells are
promising devices that deliver electricity from hydrogen and oxygen, producing only water …

The autotrophic Sideroxydans lithotrophicus ES-1 can grow by coupling the oxidation of
ferrous iron to the reduction of oxygen. Soluble ferrous iron is oxidized at the surface of the …

Hopanoids are bacterial surrogates of eukaryotic membrane sterols and among earth's most
abundant natural products. Their molecular fossils remain in sediments spanning more than …