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Title: Partitioning of uranyl between ferrihydrite and humic substances at acidic and circum-neutral pH

Journal Article · · Geochimica et Cosmochimica Acta
 [1];  [2];  [3];  [3];  [4];  [5];  [6]
  1. Stanford Univ., Stanford, CA (United States); Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne (Switzerland)
  2. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Stanford Univ., Stanford, CA (United States)
  4. Stanford Univ., Stanford, CA (United States); Duke Univ., Durham, NC (United States)
  5. Duke Univ., Durham, NC (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States)
  6. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Duke Univ., Durham, NC (United States)

As part of a larger study of the reactivity and mobility of uranyl (U(VI)O22+) cations in subsurface environments containing natural organic matter (NOM) and hydrous ferric oxides, we have examined the effect of reference humic and fulvic substances on the sorption of uranyl on 2-line ferrihydrite (Fh), a common, naturally occurring nano-Fe(III)-hydroxide. Uranyl was reacted with Fh at pH 4.6 and 7.0 in the presence and absence of Elliott Soil Humic Acid (ESHA) (0–835 ppm) or Suwanee River Fulvic Acid (SRFA) (0–955 ppm). Here, no evidence was found for reduction of uranyl by either form of NOM after 24 h of exposure.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1394077
Journal Information:
Geochimica et Cosmochimica Acta, Vol. 215, Issue C; ISSN 0016-7037
Publisher:
The Geochemical Society; The Meteoritical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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