The number of studies using various stable isotope systems for tracing contamination
sources and various biogeochemical processes is rapidly rising due to the increased …

Microorganisms can oxidize Mn (II) to biogenic Mn oxides (BioMnOx), through enzyme-
mediated processes and non-enzyme-mediated processes, which are generally considered …

Birnessite minerals help control the fate of Zn in surface environments and readily
fractionate Zn isotopes through adsorption reactions, yet little is known about the role played …

Reaction of aqueous Mn (II) with hexagonal birnessite at pH 7.5 causes reductive
transformation of birnessite into feitknechtite (β-MnIIIOOH) and manganite (γ-MnIIIOOH) …

In this paper, mesoporous birnessite-type manganese oxide (δ-MnO 2) was synthesized
using potassium permanganate and citric acid monohydrate through a simple redox method …

Tl stable isotopes recorded in marine ferromanganese crusts show great promise as a tracer
of past marine and climatic conditions. Key to interpreting recent Tl stable isotope time …

Sorption mechanisms of heavy metals at the mineral/water interface are largely controlled by
the type and number of sorption sites on the mineral surfaces. However, in the case of …

Minor-element concentrations in marine ferromanganese nodules are primarily controlled by
the mineralogy, which itself depends on redox conditions at the sediment-water interface …

We report results of experiments conducted to quantify the sense and magnitude of
cadmium stable isotope fractionation during sorption to synthetic birnessite (Mn …

Birnessite, a phyllomanganate and the most common type of Mn oxide, affects the fate and
transport of numerous contaminants and nutrients in nature. Birnessite exhibits hexagonal …