Synthesis and fabrication of biotemplated lithium ion sieve

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K14275
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Earth system and resources engineering
• Research Institution: Kyushu University
• Principal Investigator: SASAKI Keiko 九州大学, 工学研究院, 教授 (30311525)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: lithium ion sieve / lithium / adsorption / biomineralization / manganese oxides / geothermal waters

Outline of Final Research Achievements

Optimizing the calcination of biomineralized manganese oxides, biotemplated lithium ion sieve was successfully synthesized, which has the maximum adsorption capacity of 14.7 mg-Li/g-MnOx. Fabrication of powdery biotemplated lithium ion sieve in alginate beads improved the handleability. After fabrication, the maximum adsorption capacity and recycability were still maintained, although the adsorption kinetics decreased. Fabrication of powdery biotemplated lithium ion sieve in alginate beads largely contributed to separation and recovery of lithium from natural waters including geothermal and sea waters.

Free Research Field

環境材料学