Filter and metal ion removing method
AssigneeSolventum Intellectual Properties Company
InventorsMitsuaki Kobayashi, Yukihisa Okada, Takaaki Shirai, Hideyuki Okada
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Abstract
A filter includes a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product. When water having an electric resistivity value of 18 MΩ·cm or more is allowed to pass through a space velocity of 1200 hr−1, the electric resistivity value of water after passage is 15 MΩ·cm or more. To provide a filter that can efficiently remove metal ions in a solution to be treated, and easily acquire a solution having an extremely low content of metal ions.
Claims4
A filter comprising a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product, wherein the dry gel powder comprises dried hydrogel particles, and
- when water having an electric resistivity value of 18·cm or more is allowed to pass through the filter at a space velocity of 1200 hr−1, the electric resistivity value of water after passage is 15 MΩ·cm or more.
Dependencies are inferred from the claim text.