Selective recovery of lithium from seawater using a novel MnO2 type adsorbent

• Autorzy: Yoshizuka K. , Fukui K. , Inoue K.
• Języki publikacji: EN

Abstrakty

EN

A novel ?-type manganese dioxide (?-MnO2) adsorbent has been developed for selectively recovering Li+ from seawater. This adsorbent can be prepared from spinel-type lithium di manganese tetra-oxide (LiMn2O4) using ion exchange of Li+ by hydrogen ion. In batch adsorption, ?-MnO2 adsorbent can effectively adsorb Li+ at elevated pH (like seawater; pH=8.1) with quite high selectivity for Li+ vs. Na+ (molar ratio of Li+/Na+ exceeding 800). In chromatographic separation, Li+ can be effectively adsorbed on the adsorbent packed into column, while Na+ is only scarcely adsorbed. In elution stage, Li+ can be concentrated more than 75 times compared to its initial concentration in the feed solution of adsorption stage, while little Na+ was eluted. The molar selectivity coefficient of Li+/Na+ to 2300 can be achieved.

Słowa kluczowe

EN

adsorption; recovering lithium; seawater; manganese dioxide

• Wydawca: Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences, Bydgoszcz
• Czasopismo: Ars Separatoria Acta
• Rocznik: 2002
• Tom: No. 1
• Strony: 79--86
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Yoshizuka K.

• Department of Chemical Processes and Environments, The University of Kitakyushu, Hibikino 1-1, Kitakyushu 808-0135, Japan

autor

Fukui K.

• Department of Applied Chemistry, Saga University, Honjo 1, Saga 840-8502, Japan

autor

Inoue K.

• Department of Applied Chemistry, Saga University, Honjo 1, Saga 840-8502, Japan

Bibliografia

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• [3] K. Ooi, Y. Miyai, S. Katoh, H. Maeda, M. Abe, Langmuir 1989, 5, 150-157.
• [4] K. Ooi, Y. Miyai, J. Sakakihara, Langmuir 1991, 7, 1167-1171.
• [5] W. Tang, H. Kanoh, K. Ooi, J. Solid State Chem. 1999, 142, 19-28.
• [6] A. Tanaka, H. Tamura, R. Furuichi, Electrochem. 1999, 67, 974-977.