ABSTRACT Water contamination is one of the major issues disturbing the eco‐friendly environment that creates a significant impact on human health in addition to the aquatic living organisms, produced due to the rapid industrialization and civilization process. To address this issue in the present study, AgNPs were chemically synthesized for coating on different filters and filter papers to investigate AgNPs activity in the decontamination of domestic water and different industrial wastewater (pharmaceutical industry and polymer industry wastewater). AgNPs were characterized by UV‐visible spectroscopy, scanning electron microscope‐SEM, and X‐ray diffraction‐XRD. The UV‐Vis spectra showed an absorbance peak in the range of 330 nm. SEM analysis measured the size of AgNPs at about 90 nm and X‐Ray diffraction pattern confirmed that the AgNPs are of crystalline nature. The dipping method was used to coat water filters and filter papers with AgNPs filtrates, through which domestic and industrial wastewater were then passed. Non‐filtered (control) and filtered water samples were tested for different parameters including pH, electrical conductivity, hardness, nitrates, sulfates, dissolved oxygen, and total dissolved salts. The results demonstrated significant ( p < 0.05) reductions in key contaminants, particularly nitrates (up to 96%), electrical conductivity (up to 50%), and total dissolved solids (up to 50%) in industrial wastewater after filtration through AgNP‐coated filters compared to uncoated controls. AgNP‐coated filters showed higher removal efficiency for selected physicochemical parameters, compared to AgNP‐coated filter papers. An increase in dissolved oxygen levels was also observed following filtration, reflecting improved water quality after treatment. This study highlights the novelty of applying AgNP‐coated filtration systems specifically to industrial wastewater and provides a direct performance comparison between coated filters and filter papers. The findings suggest that AgNP‐coated filters offer a promising and potentially cost‐effective approach for industrial wastewater remediation.
Javed et al. (2026) studied this question.