For removing metal from a substrate which requires the removal of metals from them, for example, discloses a device such as a solid carrier which metal binding metallothionein protein bound. In particular, there is disclosed a film having to remove the metal from the liquid substrate, a metallothionein protein brine shrimp from (Artemia). Also disclosed are related methods for using the metallothionein protein, and to remove metal from the substrate. [Selection Figure Figure 5
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