Please use this identifier to cite or link to this item:
Title: Adsorption of antimony(V) by floodplain soils, amorphous iron(III) hydroxide and humic acid
Contributor(s): Tighe, M (author); Lockwood, PV (author); Wilson, SC (author)orcid 
Publication Date: 2005
DOI: 10.1039/b508302h
Handle Link:
Abstract: Antimony (Sb) emissions to the environment are increasing, and there is a dearth of knowledge regarding Sb fate and behaviour in natural systems. In particular, there is a lack of understanding of sorption of the oxidised Sb(V) species onto soils and soil phases. In this study sorption of Sb(V) by two organic rich soils with high levels of oxalate extractable Fe was examined over the pH range of 2.5–7. Furthermore, the sorption behaviour of Sb(V) was examined in two phases mimicking those dominant in the experimental soils, namely a solid humic acid and an amorphous Fe(OH)3, across the same pH range. Sorption of Sb by the soils and the humic acid fitted a Freundlich type isotherm, with the equation parameters reflecting changes in bonding affinity corresponding to pH changes. The soils sorbed 475% of the added Sb in all trials, and 80–100% at pH values less than approximately 6.5. The Fe(OH)3 retained 495% of the added Sb in all experiments. The humic acid sorbed up to 60% of the added Sb at acidic pH values, but sorption decreased to zero at higher pH values. Further adsorption studies are recommended, such as examining theeffects of ion competition and changes in ionic strength.
Publication Type: Journal Article
Source of Publication: Journal of Environmental Monitoring, v.7, p. 1177-1185
Publisher: Royal Society of Chemistry
Place of Publication: United Kingdom
ISSN: 1464-0325
Field of Research (FOR): 039901 Environmental Chemistry (incl Atmospheric Chemistry)
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Statistics to Oct 2018: Visitors: 238
Views: 245
Downloads: 0
Appears in Collections:Journal Article

Files in This Item:
2 files
File Description SizeFormat 
Show full item record


checked on Nov 26, 2018

Page view(s)

checked on Dec 29, 2018
Google Media

Google ScholarTM





Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.