PROBLEM TO BE SOLVED: To improve the collection efficiency of metals contained in seawater.SOLUTION: This metal collection system is constituted with: a first system in which a hypochlorous acid solution is prepared by the electrolysis of seawater and the sterilization of a metal collection material is carried out by using the hypochlorous acid solution and a second system in which metals contained in seawater are collected by using the metal collection material subjected to the sterilization in the first system.COPYRIGHT: (C)2012,JPO&INPIT【課題】海水に含まれる金属の捕集効率を向上させる。【解決手段】海水を電気分解して次亜塩素酸溶液を生成し、該次亜塩素酸溶液を用いて金属捕集材を殺菌する第1のシステムと、前記第1のシステムによって殺菌された前記金属捕集材を用いて海水に含まれる金属を捕集する第2のシステムとによって金属捕集システムを構成する。【選択図】図1