water with ferrous ion, sulfur, or pyrite mineral as sole source of energy have been
established. The electrokinetic behaviour of the bacterial cells was investigated and the cell
surface groups were characterized by diffuse reflectance FT-IR and FT-Raman
spectroscopies. The surface charge on the iron-grown cells (iep, pH 2.0) is different from that
on the solid-substrate-grown cells (iep, pH 3.0–3.5) and the surface charge depends on the …