Fig. 1

SEM images of natural zeolite: (a) 1000× showing porous, irregular particles; (b) 2500× revealing micropores and rough surface (scale bar = 10 μm), indicating high adsorption potential.

SEM images of natural zeolite: (a) 1000× showing porous, irregular particles; (b) 2500× revealing micropores and rough surface (scale bar = 10 μm), indicating high adsorption potential.