Issue 11, 2024

Different routes of bismuth mineral transformation during pertechnetate and perrhenate uptake for subsurface remediation

Abstract

We investigated basic bismuth subnitrate for removal of radioactive technetium-99 as pertechnetate (99TcO4) from contaminated groundwater. This material removed 93% of the initial concentration of 99TcO4 within a week via formation of pH-dependent mineral phases that were identified here, but not reported previously. Perrhenate (ReO4) removal was also studied because it is a widely used non-radiological analogue for 99TcO4, considering their similar physicochemical properties. We found that removal of ReO4 was not identical to removal of 99TcO4 and led to formation of an additional transitional phase. This demonstrates that perrhenate and pertechnetate have different kinetics of contaminant removal as a result of variations in mineral transformation.

Graphical abstract: Different routes of bismuth mineral transformation during pertechnetate and perrhenate uptake for subsurface remediation

Supplementary files

Article information

Article type
Communication
Submitted
13 Jun 2024
Accepted
12 Sep 2024
First published
03 Oct 2024
This article is Open Access
Creative Commons BY license

Environ. Sci.: Water Res. Technol., 2024,10, 2646-2654

Different routes of bismuth mineral transformation during pertechnetate and perrhenate uptake for subsurface remediation

D. Boglaienko, M. E. Bowden, N. M. Escobedo, Q. M. Collins, A. R. Lawter, T. G. Levitskaia and C. I. Pearce, Environ. Sci.: Water Res. Technol., 2024, 10, 2646 DOI: 10.1039/D4EW00496E

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