Browsing by Author "Ojemaye, Mike O. 0000-0002-4038-7639"

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    Influence of different Ag/ZnO heterostructures on the removal efficiency of multidrug-resistant Enterococcus faecium harboring multiple resistance genes from tap water
    (Wiley, 2022-05-31) Anthony, Eric T. 0000-0002-1367-6136; Ojemaye, Mike O. 0000-0002-4038-7639; Okoh, Omobola O. 0000-0003-3372-1958; Okoh, Anthony I. 0000-0002-9770-085X
    The adsorption efficiency of different Ag/ZnO heterostructures was investigated for the removal of multidrug-resistant Enterococcus faecium (MDR_EF) harboring multiple resistance genes from tap-water. The concentration of the precursors influences the microstructures of the adsorbents; however, it did not significantly affect the adsorption efficiency. The maximum adsorption capacity, qe, (34.11 CFU/g), was obtained for Ag1Zn3.5. The kinetic studies revealed that Ag1Zn1 and Ag1Zn2 adsorbents agreed to the pseudo-first-order kinetic equation and adsorbents Ag2Zn1, Ag3.5Zn1 and Ag1Zn3.5 agreed to the pseudo-second-order kinetic equation. Initial tap-water pH range was beneficial for the adsorption and the pH of the treated tap-water was within the WHO tap water recommendation (6.5–8.5), whereas the effect of ionic strength, anionic and cationic interference was insignificant in the adsorption of MDR_EF onto the different heterostructure. Interestingly, the MDR_EF could retain its cell membrane integrity and resistance genes, suggesting that surface adsorption was the primary mechanism for the removal.