Lastly, the zinc sputtering of the zeolite showed similar results in the absence and presence of the magnet, (ZnSZ-M) and (ZnSZ+M), respectively. The sputtering led to considerably better extraction of copper, than (RZ), at 5min, and that also exceeded the reading of (ZnGZ-M+F) at that sampling time in the absence of the magnet (ZnSZ-M), or was on par with (ZnGZ-M+F) when the magnet was present (ZnSZ+M), Fig. . The sputtering readings, with or without magnet, at 20 min, were also close to those of (ZnGZ-M+F). Nevertheless, the performance of the sputtered zeolite deteriorated afterwards, possibly due to having thinner than thicker layers of zinc atoms on the sputtered coat, Fig. for a detailed model summary of the levels comprising the main effects. It is worthy of note that there were no major shifts in pH and conductivity readings over time, but remarkably the application of the zinc-reinforced zeolite -/+ the neodymium magnet led generally to more neutralisation of the acidity of the polluted solution as time passed when compared to the effect of raw zeolite. That was more pronounced when the