| 초록 |
This study aims to evaluate the effect of LMO (lithium manganese oxide) and enhanced BEDI (bipolar membrane electro-dialysis deionization) system on the lithium ion desorption process for the recovery of lithium ions. The factors that influence lithium ion recovery are evaluated in reference to the pH, voltage, flow rates, and number of bipolar membrane sheets. The research findings show that in the desorption of LMO lithium ions, the lower the pH, the higher the desorption rates. When the voltage was 6.5 V per sheet, the desorption rates were approximately 70%, and when flow rates were 0.44 mL/cm2·min, the desorption was approximately 30 minutes faster than that at other flow rates. When the number of bipolar membrane sheets was 4, it was possible to control the pH to under 4. For a combination of the conditions above, the recovery time was reduced by approximately 180 minutes compared to when a chemical process was used for lithium ion desorption. |
