| 초록 |
Activated carbon decorated with MnO2 was prepared using different Mn salt concentrations and samples were calcined for various time as a facile impregnation approach for enhancing the capacity of activated carbon for lithium adsorption. The morphological and physico-chemical properties were characterized. A batch experiment was performed to optimize the parameters (pH, adsorbent dose, and contact time) for Li+ adsorption. A kinetic study indicated that lithium sorption process followed a pseudo-second order reaction. Comparative analysis showed that adsorption capacity of the functionalized activated carbon with various manganese contents increased with an increase in manganese loading, FAC-Mn0.1, FAC-Mn0.15, and FAC-Mn0.2, with values of 54%, 75%, and 96%, respectively. A desorption study was performed to make process more efficient. Overall, it is concluded that the synthesized nanocomposites can be effectively used in lithium adsorption and recovery from aqueous solution. |
