http://researchonline.federation.edu.au/vital/access/manager/Index ${session.getAttribute("locale")} 5 http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:12247 Wed 07 Apr 2021 14:00:32 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10422 Wed 07 Apr 2021 13:55:47 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10421 Wed 07 Apr 2021 13:55:47 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10417 Wed 07 Apr 2021 13:55:47 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10415 Wed 07 Apr 2021 13:55:46 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10412 Wed 07 Apr 2021 13:55:46 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10401 Wed 07 Apr 2021 13:55:46 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10416 Wed 07 Apr 2021 13:55:46 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10392 95% of the As(aq) within the first 4 h of aeration. Ferrihydrite transformed to schwertmannite within 23 days, although sorbed/coprecipitated As(III) remained unoxidized during this period. Schwertmannite subsequently transformed to jarosite at low pH (2-3), accompanied by oxidation of remaining Fe 2+. This coincided with a repartitioning of some sorbed As back into the aqueous phase as well as oxidation of sorbed/coprecipitated As(III) to As(V). Fe(III) precipitates formed via groundwater aeration were highly prone to reductive dissolution, thereby posing a high risk of mobilizing sorbed/coprecipitated As during any future upward migration of redox boundaries. Longer-term investigations are warranted to examine the potential pathways and magnitude of arsenic mobilization into surface waters in tidally reflooded wetlands. © 2011 American Chemical Society.]]> Wed 07 Apr 2021 13:55:45 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10397 Wed 07 Apr 2021 13:55:45 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10394 Wed 07 Apr 2021 13:55:45 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10398 Wed 07 Apr 2021 13:55:45 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10381 Wed 07 Apr 2021 13:55:44 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10385 Wed 07 Apr 2021 13:55:44 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10377 Wed 07 Apr 2021 13:55:44 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10374 Wed 07 Apr 2021 13:55:44 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10373 4.6). Sorption of As(V) and As(III) caused significant release of SO 4 2- from within the schwertmannite solid-phase, without major degradation of the schwertmannite structure (as evident by X-ray diffraction and Raman spectroscopy). This can be interpreted as arsenic sorption via incorporation into the schwertmannite structure, rather than merely surface complexation at the mineral-water interface. The results of this study have important implications for arsenic mobility in the presence of schwertmannite, such as in areas affected by acidmine drainage and acid-sulfate soils. In particular, arsenic speciation, arsenic loading, and pH should be considered when predicting and managing arsenic mobility in schwertmanniterich systems. © 2009 American Chemical Society.]]> Wed 07 Apr 2021 13:55:44 AEST ]]> http://researchonline.federation.edu.au/vital/access/manager/Repository/vital:10379 Wed 07 Apr 2021 13:55:44 AEST ]]>