Water–Rock Interactions: An Investigation of the Relationships Between Mineralogy and Groundwater Composition and Flow in a Subtropical Basalt Aquifer

2011 ◽  
Vol 18 (1) ◽  
pp. 45-75 ◽  
Author(s):  
Katrina L. Locsey ◽  
Micaela Grigorescu ◽  
Malcolm E. Cox
Keyword(s):  
Groundwater Composition

Land use effects in groundwater composition of an alluvial aquifer (Trussu River, Brazil) by multivariate techniques

2008 ◽  
Vol 106 (2) ◽  
pp. 170-177 ◽  
Author(s):  
Eunice Maia de Andrade ◽  
Helba Araújo Queiroz Palácio ◽  
Ivam Holanda Souza ◽  
Raimundo Alípio de Oliveira Leão ◽  
Maria João Guerreiro
Keyword(s):  
Land Use ◽  
Alluvial Aquifer ◽  
Multivariate Techniques ◽  
Land Use Effects ◽  
Groundwater Composition

Influence of groundwater composition on subsurface iron and arsenic removal

2012 ◽  
Vol 66 (1) ◽  
pp. 173-178 ◽  
Author(s):  
D. H. Moed ◽  
D. van Halem ◽  
J. Q. J. C. Verberk ◽  
G. L. Amy ◽  
J. C. van Dijk
Keyword(s):  
Arsenic Removal ◽  
Iron Removal ◽  
Column Experiments ◽  
Research Project ◽  
Sand Column ◽  
Adsorption Sites ◽  
Novel Technology ◽  
Synthetic Groundwater ◽  
Subsurface Treatment ◽  
Groundwater Composition

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−1 phosphate, 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.

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