An adsorbent for anionic substances, a method for producing an adsorbent for anionic substances, an apparatus for producing an adsorbent for anionic substances, and a method for recovering anionic substances

摘要

The present invention contains a foamed glass, and the Ca2p concentration on the surface of the adsorbent by XPS analysis is 7.5 atomic% or more, or the Na1s concentration is 5.0 atomic% or less, and the half-width of the Si2p peak is 2.4 eV or more. to be. Moreover, it is preferable that the adsorbent has a specific surface area of 45 m ² / g or more or a pore volume of 2.5 cm ³ / g or more by the mercury intrusion method.