Application of hydrotalcite in soil immobilization of iodate (IO₃ ^-).

ABSTRACT: Radioactive iodine is quite mobile in soil and poses threats to human health and the ecosystem. Many materials, including layered double hydroxides (LDH), have been synthesized to successfully capture iodine from aqueous environments. However, limited information is available on the application of LDH in soil to immobilize iodine species. In the present study, the feasibility of using Mg-Al-NO₃ LDH for retention of soil iodate (IO₃ ^-) in both batch and column systems was analyzed. The 2 : 1 Mg-Al-NO₃ LDH exhibited the greatest removal efficiency of IO₃ ^- from aqueous solution, compared with 3 : 1 and 4 : 1 Mg-Al-NO₃ LDH. The Mg₂-Al-NO₃ LDH demonstrated a strong affinity for IO₃

SUBMITTER: Zhang D 

PROVIDER: S-EPMC9080864 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature