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The life cycle of nanoparticles in Acid Mine Drainage: An in situ synchrotron study

DOI: 10.1016/j.gca.2006.06.278 DOI Help

Authors: L. E. Davidson (University of Leeds) , L. G. Benning (University of Leeds) , S. Shaw (University of Leeds) , N. J. Terrill (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Geochimica Et Cosmochimica Acta , VOL 70 (18) , PAGES A131

State: Published (Approved)
Published: August 2006

Abstract: Owing to their high surface area and increased surface reactivity, iron oxyhydroxide nano-phases in natural and contaminated environments play an important role in many processes which control the cycling and bioavailability of trace contaminants (e.g., As). Schwertmannite (SW), a poorly ordered iron oxyhydroxy-sulphate that typically forms in low pH (2.5 < pH < 4.5), high [SO4] aqueous environments (i.e., Acid Mine Drainage, AMD), is known to effectively remove toxic species from solution. However, the pathways leading to its formation and crystallisation have so far not been quantified. Here, we present new data using in situ time-resolved synchrotron-based Small Angle X-ray Scattering (SAXS) and Energy Dispersive X-ray Diffraction (EDXRD) to characterise the nucleation, growth, and transformation of schwertmannite.

Subject Areas: Environment, Chemistry

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Added On: 10/11/2010 08:51

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