| abstract |
The heavy metal adsorbent of the present invention contains silica magnesia composite particles in which silica and magnesium oxide are integrally combined, and the pore volume at a pore diameter of 3.5 to 10.0 nm measured by mercury intrusion is 0.26 to 0.50 mL / g, and 3.5 to 5000.0. The pore volume at nm is in the range of 1.30 to 2.50 mL / g, and the compressive strength is 1.5 MPa or more. The heavy metal adsorbent of the present invention is inexpensive, does not contain aluminum, and has high removal performance against heavy metals, particularly lead, in running water. |