The effectiveness of silver nanoparticles as a clean-up material for water polluted with bacteria DNA conveying antibiotics resistance genes: Effect of different molar concentrations and competing ions

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dc.contributor.authorEzeuko CS
dc.contributor.authorOjemaye O
dc.contributor.authorOkoh OO
dc.contributor.authorOkoh A
dc.date.accessioned2026-04-01T08:34:01Z
dc.date.available2026-04-01T08:34:01Z
dc.date.issued2022-07-22
dc.description.abstractThis study employed silver nanoparticles to remove DNA conveying antibiotic resistance genes from water. Three different molar concentrations of silver nanoparticles represented as BD1 (0.1M), BD2 (0.5 M), and BD3 (1.0 M) were synthesized as adsorbents and evaluated in a batch adsorption system for the removal of bacteria DNA conveying antibiotic resistance genes from simulated aqueous solution. The authenticity of the adsorbents was confirmed by characterization techniques using Fourier transformed infrared spectroscopy (FTIR), scanning electron microscopy (SEM) coupled with energy-dispersive x-ray spectroscopy (EDX), and x-ray diffraction spectroscopy (XRD) indicated the successful synthesis of these AgNPs. Adsorption studies involving the different operating conditions on the synthesized materials showed that pH affects the removal of DNA with increased removal efficiency observed at acidic pH (removal percentage ranging from 50.26-87.61%, 65.80-87.79%, and 69.23-87.92% for BD1, BD2, and BD3 respectively). Maximum adsorption equilibrium was achieved after 180, 195, and 225 mins for BD1, BD2, and BD3. The isotherm study revealed that Langmuir model is the best fit compared to Freundlich model with highest correlation coefficient and reduced Chi-square (X2) of R2 = 0.97625 and X2 = 0.12142, R2 = 0.96049 and X2 = 0.24403, R2 = 0.85108 and reduced X2 = 1.00914 for BD1, BD2, and BD3 respectively. The kinetic study for the adsorption process indicates that the adsorption of bacteria DNA onto AgNPs obeyed pseudo-second-order with the highest R2 values (ranging from 0.90 to 0.98). Similarly, competing ions (cations and anions) influenced the adsorption capacity in this study. Therefore, this study concludes that AgNPs demonstrated effectiveness in removing bacteria DNA-conveying ARGs from water and will serve as an excellent option to tackle the menace of ARGs in water.
dc.description.sponsorshipThe authors thank the South Africa Medical Research Council for financial support.
dc.identifier.citationEzeuko, C.S., Ojemaye, O., Okoh, O.O. & Okoh, A.I. (2022). The effectiveness of silver nanoparticles as a clean-up material for water polluted with bacteria DNA conveying antibiotics resistance genes: Effect of different molar concentrations and competing ions. OpenNano, 7, 100048. https://doi.org/10.1016/j.onano.2022.100048
dc.identifier.issn2352-9520
dc.identifier.urihttp://hdl.handle.net/20.500.11837/3935
dc.language.isoen
dc.publisherElsevier
dc.subjectSilver nanoparticles
dc.subjectAdsorption
dc.subjectAntibiotic resistance genes
dc.subjectDNA
dc.subjectEquilibrium study
dc.titleThe effectiveness of silver nanoparticles as a clean-up material for water polluted with bacteria DNA conveying antibiotics resistance genes: Effect of different molar concentrations and competing ions
dc.typeArticle
person.identifier.orcidEzeuko CS 0000-0002-5193-9195
person.identifier.orcidOjemaye O 0000-0002-4038-7639
person.identifier.orcidOkoh OO 0000-0003-3372-1958
person.identifier.orcidOkoh A 0000-0002-9770-085X

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