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On the suitability of admixing sand to metallic iron for water treatment

Noubactep, ChicgouaORCIDiD
Preprint
2013
DOI: https://doi.org/10.7726/ijeps.2013.1004
Noubactep, Chicgoua, 2013: On the suitability of admixing sand to metallic iron for water treatment. In: Noubactep, Chicgoua (2013): On the suitability of admixing sand to metallic iron for water treatment, 22 - 36, DOI 10.7726/ijeps.2013.1004.
 
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  • Abstract
This communication clarifies the relationships between sand addition and the sustainability of iron/water systems for environmental remediation. It is shown that any enhanced contaminant removal in an iron/sand/water relative to an iron/water system is related to the avoidance/delay of particle cementation by virtue of the inert nature of sand. The argument that sand dissolution produces protons (H+) to sustain iron corrosion is disproved by the very low dissolution kinetics solubility of SiO2-bearing minerals under environmental conditions. This demonstration corroborates the concept that aqueous contaminant removal in iron/water systems is not a process mediated by electrons from Fe0.
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