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dc.creatorDolic, Maja B
dc.creatorRajakovic-Ognjanovic, Vladana N
dc.creatorŠtrbac, Svetlana
dc.creatorRakočević, Zlatko Lj.
dc.creatorVeljović, Đorđe
dc.creatorDimitrijević, Suzana I.
dc.creatorRajaković, Ljubinka V.
dc.date.accessioned2019-10-28T13:29:59Z
dc.date.available2017-09-02
dc.date.issued2015
dc.identifier.issn0169-4332
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/3183
dc.description.abstractThis study is focused on the surface modifications of the materials that are used for antimicrobial water treatment. Sorbents of different origin were activated by Ag+-ions. The selection of the most appropriate materials and the most effective activation agents was done according to the results of the sorption and desorption kinetic studies. Sorption capacities of selected sorbents: granulated activated carbon (GAC), zeolite (Z), and titanium dioxide (T), activated by Ag+-ions were following: 42.06, 13.51 and 17.53 mg/g, respectively. The antimicrobial activity of Ag/Z, Ag/GAC and Ag/T sorbents were tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus and yeast C. albicans. After 15 min of exposure period, the highest cell removal was obtained using Ag/Z against S. aureus and E. coli, 98.8 and 93.5%, respectively. Yeast cell inactivation was unsatisfactory for all three activated sorbents. The antimicrobial pathway of the activated sorbents has been examined by two separate tests - Ag+-ions desorbed from the activated surface to the aqueous phase and microbial cell removal caused by the Ag+-ions from the solid phase (activated surface sites). The results indicated that disinfection process significantly depended on the microbial-activated sites interactions on the modified surface. The chemical state of the activating agent had crucial impact to the inhibition rate. The characterization of the native and modified sorbents was performed by X-ray diffraction technique, X-ray photoelectron spectroscopy and scanning electron microscope. The concentration of adsorbed and released ions was determined by inductively coupled plasma optical emission spectroscopy and mass spectrometry. The antimicrobial efficiency of activated sorbents was related not only to the concentration of the activating agent, but moreover on the surface characteristics of the material, which affects the distribution and the accessibility of the activating agent.en
dc.publisherElsevier Science Bv, Amsterdam
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS//
dc.relationCOST-European Cooperation in Science and Technology
dc.rightsembargoedAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceApplied Surface Science
dc.subjectSilveren
dc.subjectActivated sorbentsen
dc.subjectAntimicrobial activityen
dc.subjectE. colien
dc.subjectS. aureusen
dc.subjectC. albicansen
dc.titleThe antimicrobial efficiency of silver activated sorbentsen
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractДимитријевић, Сузана И.; Штрбац, Светлана; Ракочевић, Златко Љ.; Вељовиц, Дорде Н; Долиц, Маја Б; Рајаковиц, Љубинка В; Рајаковиц-Огњановиц, Владана Н;
dc.citation.volume357
dc.citation.spage819
dc.citation.epage831
dc.citation.other357: 819-831
dc.citation.rankaM21
dc.description.otherThis is peer-reviewed version of the artcle: M.B. Đolić, V.N. Rajaković-Ognjanović, S.B. Štrbac, Z.L. Rakočević, Đ.N. Veljović, S.I. Dimitrijević, L. V Rajaković, The antimicrobial efficiency of silver activated sorbents, Appl. Surf. Sci. 357 (2015) 819–831. [https://doi.org/10.1016/j.apsusc.2015.09.032]
dc.description.otherPublished version: [http://cer.ihtm.bg.ac.rs/handle/123456789/1791]
dc.identifier.doi10.1016/j.apsusc.2015.09.032
dc.identifier.rcubConv_3458
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs/bitstream/id/14928/10.1016j.apsusc.2015.09.032.pdf
dc.identifier.scopus2-s2.0-84949894930
dc.identifier.wos000366216900109
dc.type.versionacceptedVersion


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