Resistance, bioaccumulation and solid phase extraction of uranium (VI) by Bacillus vallismortis and its UV-vis spectrophotometric determination

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dc.authoridSoylak, Mustafa -- 0000-0002-1017-0244; Kilinc, Ersin -- 0000-0001-5223-9919en_US
dc.contributor.authorOzdemir, Sadin
dc.contributor.authorOduncu, M. Kadir
dc.contributor.authorKilinc, Ersin
dc.contributor.authorSoylak, Mustafa
dc.date.accessioned14.07.201910:50:10
dc.date.accessioned2019-07-16T20:43:57Z
dc.date.available14.07.201910:50:10
dc.date.available2019-07-16T20:43:57Z
dc.date.issued2017
dc.departmentMAÜ, Meslek Yüksekokulları, Sağlık Hizmetleri Meslek Yüksekokulu, Tıbbi Hizmetler ve Teknikler Bölümüen_US
dc.description.abstractBioaccumulation, resistance and preconcentration of uranium(VI) by thermotolerant Bacillus vallismortis were investigated in details. The minimum inhibition concentration of (MIC) value of U(VI) was found as 85 mg/L and 15 mg/L in liquid and solid medium, respectively. Furthermore, the effect of various U(VI) concentrations on the growth of bacteria and bioaccumulation on B. vallismortis was examined in the liquid culture media. The growth was not significantly affected in the presence of 1.0, 2.5 and 5.0 mg/L U(VI) up to 72 h. The highest bioaccumulation value at 1 mg/L U(VI) concentration was detected at the 72nd hour (10 mg/g metal/dry bacteria), while the maximum bioaccumulation value at 5 mg/L U(VI) concentration was determined at the 48th hour (50 mg metal/dry bacteria). In addition to these, various concentration of U(VI) on alpha-amylase production was studied. The alpha-amylase activities at 0, 1, 2.5 and 5 mg/L U(VI) were found as 3313.2, 3845.2, 3687.1 and 3060.8 U/mg, respectively at 48th. Besides, uranium (VI) ions were preconcentrated with immobilized B. vallismortis onto multiwalled carbon nanotube (MWCNT) and were determined by UV-vis spectrophotometry. The surface macro structure and functionalities of B. vallismortis immobilized onto multiwalled carbon nanotube with and without U(VI) were examined by FT-IR and SEM. The optimum pH and flow rate for the biosorption of U(VI) were 4.0-5.0 and 1.0 mL/min, respectively. The quantitative elution occurred with 5.0 mL of 1 mol/L HCI. The loading capacity of immobilized B. vallismortis was determined as 23.6 mg/g. The certified reference sample was employed for the validation of developed solid phase extraction method. The new validated method was applied to the determination of U(VI) in water samples from Van Lake-Turkey. (C) 2017 Elsevier Ltd. All rights reserved.en_US
dc.identifier.citationOzdemir, S., Oduncu, M. K., Kilinc, E., & Soylak, M. (2017). Resistance, bioaccumulation and solid phase extraction of uranium (VI) by Bacillus vallismortis and its UV–vis spectrophotometric determination. Journal of Environmental Radioactivity, 171, 217–225. https://doi.org/10.1016/j.jenvrad.2017.02.021
dc.identifier.doi10.1016/j.jenvrad.2017.02.021en_US
dc.identifier.endpage225en_US
dc.identifier.issn0265-931X
dc.identifier.issn1879-1700
dc.identifier.pmid28285087en_US
dc.identifier.scopus2-s2.0-85014851695en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage217en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.jenvrad.2017.02.021
dc.identifier.urihttps://hdl.handle.net/20.500.12514/1302
dc.identifier.volume171en_US
dc.identifier.wosWOS:000399510500023en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherELSEVIER SCI LTDen_US
dc.relation.ispartofJOURNAL OF ENVIRONMENTAL RADIOACTIVITYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBacillus vallismortisen_US
dc.subjectResistanceen_US
dc.subjectBioaccumulationen_US
dc.subjectPreconcentrationen_US
dc.subjectU(VI)en_US
dc.titleResistance, bioaccumulation and solid phase extraction of uranium (VI) by Bacillus vallismortis and its UV-vis spectrophotometric determinationen_US
dc.typeArticleen_US

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