S
Susan A. Welch
Researcher at Ohio State University
Publications - 119
Citations - 8286
Susan A. Welch is an academic researcher from Ohio State University. The author has contributed to research in topics: Weathering & Dissolution. The author has an hindex of 30, co-authored 114 publications receiving 7495 citations. Previous affiliations of Susan A. Welch include Environmental Molecular Sciences Laboratory & Florida State University College of Arts and Sciences.
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Journal ArticleDOI
Aggregation-Based Crystal Growth and Microstructure Development in Natural Iron Oxyhydroxide Biomineralization Products
TL;DR: High-resolution transmission electron microscopy of biomineralization products of iron-oxidizing bacteria revealed an alternative coarsening mechanism in which adjacent 2- to 3-nanometer particles aggregate and rotate so their structures adopt parallel orientations in three dimensions.
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Formation of sphalerite (ZnS) deposits in natural biofilms of sulfate-reducing bacteria.
M. Labrenz,Gregory K. Druschel,Tamara Thomsen-Ebert,Benjamin Gilbert,Susan A. Welch,Kenneth M. Kemner,Graham A. Logan,Roger E. Summons,Gelsomina De Stasio,Philip L. Bond,Barry Lai,Shelly D. Kelly,Jillian F. Banfield +12 more
TL;DR: These results show how microbes control metal concentrations in groundwater- and wetland-based remediation systems and suggest biological routes for formation of some low-temperature ZnS deposits.
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Biological impact on mineral dissolution: application of the lichen model to understanding mineral weathering in the rhizosphere.
TL;DR: A model based on the lichen-mineral system is employed to identify the fundamental interactions of microorganisms in soils and finds that fungi can accelerate mineral dissolution, leading to enhanced porosity and permeability and colonization by microbial communities.
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Kinetic and equilibrium Fe isotope fractionation between aqueous Fe(II) and Fe(III)
TL;DR: In this article, the authors measured the kinetics of isotope exchange between aqueous ferrous and ferric species measured over a range of chloride concentrations (0, 11, 110 mM Cl−) and at two temperatures (0 and 22°C) indicate that Fe isotope fractionation is a function of temperature but independent of chloride contents over the range studied.
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Microbial polysaccharides template assembly of nanocrystal fibers.
Clara S. Chan,Gelsomina De Stasio,Gelsomina De Stasio,Susan A. Welch,Marco Girasole,B. H. Frazer,B. H. Frazer,Maria V. Nesterova,Sirine C. Fakra,Jillian F. Banfield,Jillian F. Banfield +10 more
TL;DR: Spectromicroscopy is used to show that microbially generated submicrometer-diameter iron oxyhydroxide (FeOOH) filaments contain polysaccharides, providing an explanation for the formation of akaganeite pseudo–single crystals with aspect ratios of ∼1000:1.