Chromate Effect on Iodate Incorporation into Calcite
Abstract
Incorporation of iodate into calcite (CaCO3) may be used as an in situ treatment strategy for radioiodine in contaminated soils and groundwater, but the presence of other contaminants can inhibit its efficiency. To this end, the potential for chromate to interfere with iodate incorporation into CaCO3 was investigated as an example of how co-located contaminants can impact in situ remediation efficacy. Here, batch precipitation experiments were periodically sub-sampled over 21 days to determine the kinetic effects of chromate on iodate removal and incorporation into calcite. From these experiments, a decrease in iodate removal from >60% to
Revised: February 19, 2020 |
Published: August 15, 2019
Citation
Saslow S.A., S.N. Kerisit, T. Varga, K.C. Johnson, N.M. Avalos, A.R. Lawter, and N. Qafoku. 2019.Chromate Effect on Iodate Incorporation into Calcite.ACS Earth and Space Chemistry 3, no. 8:1624-1630.PNNL-SA-141592.doi:10.1021/acsearthspacechem.9b00047