Abstract
The extraction equilibrium of lithium with 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester, commercial name PC-88A, was investigated, as well as the extraction kinetics of lithium using a hollow fiber membrane extractor, in order to develop a recovery process for lithium from geothermal water or wastewater from lithium carbonate precipitation in the recycling process for spent lithium batteries. It was found that lithium is extracted by a heptane solution containing PC-88A, (HR), according to the following equation, Li+,aq + 2(HR)2,org → LiR(HR)3,org + H+ ,aq where (HR)2 is the dimer of PC-88A. Furthermore, the extraction mechanism of lithium through the hollow fiber membrane was elucidated.
| Original language | English |
|---|---|
| Pages (from-to) | 28-35 |
| Number of pages | 8 |
| Journal | Solvent Extraction Research and Development |
| Volume | 2000 |
| Issue number | 7 |
| Publication status | Published - Dec 1 2000 |
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)