| abstract |
An object of the present invention is to provide a filter medium that can fully perform a water purification function even at a large filtration flow rate, and which is less likely to cause problems such as leakage from a water purifier together with purified water. The filter medium of the present invention includes a porous carbon material having a specific surface area value of 1×10 2 m 2 /g or more based on the nitrogen BET method and 0.3 cm 3 /g or more based on the BJH method , and a particle size of 75 μm or greater, or including a porous carbon material having a specific surface area value of 1×10 2 m 2 /g or higher based on the nitrogen BET method, determined by an indeterminate Micropores of 1×10 ‑9 m to 5×10 ‑7 m in diameter obtained by domain density function theory have a total volume of 1.0 cm 3 /g or more and a particle size of 75 μm or more. |