Influence of groundwater composition on subsurface iron and arsenic removal
Type
ArticleKAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Date
2012-06-08Online Publication Date
2012-06-08Print Publication Date
2012-07Permanent link to this record
http://hdl.handle.net/10754/561408
Metadata
Show full item recordAbstract
Subsurface arsenic and iron removal (SAR/SIR) is a novel technology to remove arsenic, iron and other groundwater components by using the subsoil. This research project investigated the influence of the groundwater composition on subsurface treatment. In anoxic sand column experiments, with synthetic groundwater and virgin sand, it was found that several dissolved substances in groundwater compete for adsorption sites with arsenic and iron. The presence of 0.01 mmol L -1phosphate, 0.2 mmol L -1 silicate, and 1 mmol L -1 nitrate greatly reduced the efficiency of SAR, illustrating the vulnerability of this technology in diverse geochemical settings. SIR was not as sensitive to other inorganic groundwater compounds, though iron retardation was limited by 1.2 mmol L -1 calcium and 0.06 mmol L -1 manganese. © IWA Publishing 2012.Citation
Moed, D. H., van Halem, D., Verberk, J. Q. J. C., Amy, G. L., & van Dijk, J. C. (2012). Influence of groundwater composition on subsurface iron and arsenic removal. Water Science and Technology, 66(1), 173–178. doi:10.2166/wst.2012.151Publisher
IWA PublishingJournal
Water Science and TechnologyPubMed ID
22678215ae974a485f413a2113503eed53cd6c53
10.2166/wst.2012.151
Scopus Count
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