[3G01-05] Design of Liquid Metal Blanket

[3G04] Research and development of liquid breeder blanket of commercial laser inertial fusion reactor

(4) Application of liquid metal technology to seawater desalination and direct CO₂ conversion

*Toranosuke Horikawa¹, Ryuto Onozuka¹, Mahiro Masuda¹, Masatoshi Kondo¹, Kazuki Matsuo² (1. Tokyo Tech, 2. EX-Fusion)

Keywords:Liquid metal technology, Seawater desalination, Direct CO2 conversion, Polluted groundwater purification

This paper introduces the application of liquid metal technology to seawater desalination and resource recovery from seawater. Freshwater was produced by direct contact distillation between seawater and liquid metal tin at 523-623 K. Mineral resources were then dissolved into liquid metal tin. Purification of arsenic polluted groundwater was also performed in the same process. On the other hand, this paper introduces the application of liquid tin alloy to direct conversion of CO₂ into valuable resources. The decomposition of CO₂ and the production of valuable chemical compounds (e.g., Al₂O₃ and Al₄O₄C) were performed by the injection of CO₂ gas into liquid tin alloy (e.g., Sn-0.5%Al-0.5%Si and Sn-0.5%Al-0.5%Ti) at 573-673 K.