Enrichment of Li‐6 by Countercurrent Electromigration in Molten LiNO3

Abstract

High enrichment of 6Li was attempted by improvement a previously used countercurrent electromigration method in molten LiNO3. In order to prevent a possible outflow of Li § ions into a large cathode compartment which contained NH4NO3 melt by electromigration, a small zone of NaNO3 was formed between molten LiNO3 and NH4NO3 in a separation tube. The electromigration cell was reformed so that the temperature in the separation tube could be kept at an intended value. 6Li was enriched from 7.4 to 91.2% in 39 days without any trouble with material corrosion.

Evaluation Study of Ammonium Removal from Groundwater by Electrodialysis: Case Study of Real Groundwater from the City of Kenitra in Morocco

“…This phenomenon is attributed to the smaller hydration radius, lower hydration energy, and higher ionic mobility of NH 4 + across the CMX membrane compared to Na + (Table 2 ). [ 17 , 36 , 37 ]…”

“…This phenomenon is attributed to the smaller hydration radius, lower hydration energy, and higher ionic mobility of NH 4 + across the CMX membrane compared to Na + (Table 2). [17,36,37] In Additionally, Aliaskari and Schäfer [40] point out that the quality of the feed water, including contaminant concentration, pH and salinity, significantly influences contaminant removal during the ED process. For example, several studies have shown that nitrate removal is particularly high in the presence of NaCl, which can be explained by the high diffusion and ionic mobility of nitrates, as well as their competitive removal with other anions such as chloride, bicarbonate and fluoride.…”