PMID: 11329716May 2, 2001Paper

Reaction-based model describing competitive sorption and transport of Cd, Zn, and Ni in an acidic soil

Environmental Science & Technology
A VoegelinR Kretzschmar

Abstract

Predicting the mobility of heavy metals in soils requires models that accurately describe metal adsorption in the presence of competing cations. They should also be easily adjustable to specific soil materials and applicable in reactive transport codes. In this study, Cd adsorption to an acidic soil material was investigated over a wide concentration range (10(-8) to 10(-2) M CdCl2) in the presence of different background electrolytes (10(-4) to 10(-2) M CaCl2 or MgCl2 or 0.05 to 0.5 M NaCl). The adsorption experiments were conducted at pH values between 4.6 and 6.5 A reaction-based sorption model was developed using a combination of nonspecific cation exchange reactions and competitive sorption reactions to sites with high affinity for heavy metals. This combined cation exchange/specific sorption (CESS) model accurately described the entire Cd sorption data set. Coupled to a solute transport code, the model accurately predicted Cd breakthrough curves obtained in column transport experiments. The model was further extended to describe competitive sorption and transport of Cd, Zn, and Ni. At pH 4.6, both Zn and Ni exhibited similar sorption and transport behavior as observed for Cd. In all transport experiments conducted under a...Continue Reading

References

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Citations

Jan 28, 2012·Journal of Agricultural and Food Chemistry·Minori UchimiyaLynda H Wartelle
May 28, 2014·Environmental Toxicology and Chemistry·Jan E Groenenberg, Stephen Lofts
Nov 26, 2015·International Journal of Phytoremediation·Qiang LiXuejun Pan
Aug 8, 2006·Chemosphere·Patricia MiretzkyAlejandro Carrillo-Chávez
Aug 3, 2005·Journal of Contaminant Hydrology·Alan J RabideauKarl Bandilla
Apr 21, 2005·Environmental Pollution·David R OwnbyMichael J Lydy
May 13, 2014·The Science of the Total Environment·Stéphanie Sayen, Emmanuel Guillon
Sep 14, 2010·Journal of Environmental Quality·Lixia Liao, H M Selim
Apr 17, 2018·Environmental Science and Pollution Research International·Hao ZhuXumei Zhang
Jun 18, 2003·Journal of Environmental Quality·Andreas VoegelinRuben Kretzschmar
Dec 23, 2017·The Science of the Total Environment·Hannah G MikkonenSuzie M Reichman
Sep 27, 2002·Environmental Science & Technology·Andreas VoegelinRuben Kretzschmar
Jan 5, 2002·Environmental Science & Technology·L WengW H Van Riemsdijk
Dec 15, 2010·Environmental Science & Technology·Andreas VoegelinRuben Kretzschmar
Aug 4, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Jie ChenWei Yan
Sep 24, 2004·Environmental Science & Technology·Joris J DijkstraRob N J Comans
Jul 12, 2003·Environmental Science & Technology·Jon Petter GustafssonDan Berggren

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