HTO/Cellulose Aerogel for Rapid and Highly Selective Li+ Recovery from Seawater |
| |
| Authors: | Hongbo Qian Shaodong Huang Zhichen Ba Wenxuan Wang Feihan Yu Daxin Liang Yanjun Xie Yonggui Wang Yan Wang |
| |
| Institution: | 1.Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; (H.Q.); (S.H.); (Z.B.); (W.W.); (F.Y.); (Y.X.); (Y.W.);2.Harbin Center for Disease Control and Prevention, Harbin 150056, China |
| |
| Abstract: | To achieve rapid and highly efficient recovery of Li+ from seawater, a series of H2TiO3/cellulose aerogels (HTO/CA) with a porous network were prepared by a simple and effective method. The as-prepared HTO/CA were characterized and their Li+ adsorption performance was evaluated. The obtained results revealed that the maximum capacity of HTO/CA to adsorb Li+ was 28.58 ± 0.71 mg g−1. The dynamic k2 value indicated that the Li+ adsorption rate of HTO/CA was nearly five times that of HTO powder. Furthermore, the aerogel retained extremely high Li+ selectivity compared with Mg2+, Ca2+, K+, and Na+. After regeneration for five cycles, the HTO/CA retained a Li+ adsorption capacity of 22.95 mg g−1. Moreover, the HTO/CA showed an excellent adsorption efficiency of 69.93% ± 0.04% and high selectivity to Li+ in actual seawater. These findings confirm its potential as an adsorbent for recovering Li+ from seawater. |
| |
| Keywords: | Li-ion sieve cellulose aerogel H2TiO3 adsorption |
|
|
