Copper extraction by the bio-trap in (F) at later stages of the experiment was close to the raw zeolite (RZ), but (F) was inferior to the zinc-augmented zeolite (ZnGZ-M-F) at every sampling time; remarkable inferiorities were seen in the long run. Nevertheless, the addition of the bio-trap to the reinforced zeolite without the magnet (ZnGZ-M+F) led to the best outcomes of (~24% residual Cu 2+ ) at 7200min and (~16% residual Cu 2+ ) at 15480min, but not below these sampling times (thresholds). As such, in the long term, accompanying the zinc-reinforced zeolite with the bio-trap is sizeably more yielding of copper extraction than having the magnet as a sole companion, Fig. , and Supplementary Materials Tables and.