In this research prepared activated carbon by H 3 PO 4 from hazelnut shells were coated with silver ions for the preparation of nanoparticles which were mixed in two ratios (1:0.5 and 1:1) by using of chemical reduction method. The adsorption capacity of activated carbons has been proven by BET and iodine number. Then the antimicrobial effect of nanoparticles on the Staphylococcus aureus and Escherichia coli were investigated in addition to that the characterization of hazelnut shell and silver-coated activated carbons were determined by Brunauer-Emmet-Teller (BET), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and X-ray Diffraction (XRD) methods. The Optimum condition of activated carbon from hazelnut shells indicated that 66.01% carbon content within 36.22% e ciency, while BET surface area achieved as 1208 m 2 / g and its contained 0.6104 cm 3 g -1 total pore volume. The microbial effect indicated that 10 5 CFU/mL of E. coli was completely inhibited in 30 min. Silver-coated activated carbon showed excellent bacteriostatic activity against E. coli and S. aureus. The results show that the composite has good prospects for applications in drinking water. E. coli of 10 4 CFU/mL in drinking water were destroyed within 25 min of contact with the lter made with AgAC. Novelty StatementActivated carbons are used effectively in many environmental applications and rst aimed to obtain activated carbon and then investigate the effectiveness of MB removal and the second stage, we applied antibacterial tests with silver-added activated carbons. We believe that this study will add innovation to the literature with its ease of use in water puri cation by examining the effect of antibacterial tests against time, which differs from other studies.

In this research prepared activated carbon by H3PO4 from hazelnut shells were coated with silver ions for the preparation of nanoparticles which were mixed in two ratios (1:0.5 and 1:1) by using of chemical reduction method. The adsorption capacity of activated carbons has been proven by BET and iodine number. Then the antimicrobial effect of nanoparticles on the Staphylococcus aureus and Escherichia coli were investigated in addition to that the characterization of hazelnut shell and silver-coated activated carbons were determined by Brunauer-Emmet-Teller (BET), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and X-ray Diffraction (XRD) methods. The Optimum condition of activated carbon from hazelnut shells indicated that 66.01% carbon content within 36.22% efficiency, while BET surface area achieved as 1208 m2/ g and its contained 0.6104 cm3 g-1 total pore volume. The microbial effect indicated that 105 CFU/mL of E. coli was completely inhibited in 30 min. Silver-coated activated carbon showed excellent bacteriostatic activity against E. coli and S. aureus. The results show that the composite has good prospects for applications in drinking water. E. coli of 104 CFU/mL in drinking water were destroyed within 25 min of contact with the filter made with AgAC.