| abstract |
PROBLEM TO BE SOLVED: To provide a substance recovery system capable of easily and efficiently capturing a target substance, a trapping hydrogel which can be suitably applied to the substance recovery system, and a method for producing the same. The present invention is a method for producing a trapping hydrogel having a three-dimensional network structure, which contains magnetic powder and an adsorbent, wherein the adsorbent traps at least the magnetic powder, a target substance, a gel component, and water. A method for producing a trapping hydrogel, which comprises a step A of mixing under an alkaline environment and a step B of gelling after the step A, wherein at least a part of the magnetic powder is iron powder. [Selection diagram] Figure 2 |