Browsing Earth and Environmental Sciences by Author "Shi, Bingjie"
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Iron Isotope Fractionations Reveal a Finite Bioavailable Fe Pool for Structural Fe(III) Reduction in Nontronite
Shi, Bingjie; Liu, Kai; Wu, Lingling; Li, Weiqiang; Smeaton, Christina M.; Beard, Brian L.; Johnson, Clark M.; Roden, Eric E.; Van Cappellen, Philippe (American Chemical Society, 2017-08-16)We report on stable Fe isotope fractionation during microbial and chemical reduction of structural Fe(III) in nontronite NAu-1. Fe-56/Fe-54 fractionation factors between aqueous Fe(II) and structural Fe(III) ranged from ... -
Tracing Redox Cycles during Microbe-Clay Interactions Using Stable Iron Isotopes
Shi, Bingjie (University of Waterloo, 2018-10-17)Iron redox cycling, especially Fe(III) reduction, is mostly driven by microbial activity in the shallow subsurface. A wide range of bacteria, archaea, and fungi reduce Fe(III) to acquire energy with soil organic compounds ...