Tolerance and bioaccumulation of U(VI) by Bacillus mojavensis and its solid phase preconcentration by Bacillus mojavensis immobilized multiwalled carbon nanotube

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dc.authoridKilinc, Ersin/0000-0001-5223-9919
dc.authoridSoylak, Mustafa/0000-0002-1017-0244
dc.contributor.authorOzdemir, Sadin
dc.contributor.authorOduncu, M. Kadir
dc.contributor.authorKilinc, Ersin
dc.contributor.authorSoylak, Mustafa
dc.date.accessioned2024-12-24T19:27:21Z
dc.date.available2024-12-24T19:27:21Z
dc.date.issued2017
dc.departmentSiirt Üniversitesi
dc.description.abstractIn this study, uranium(VI) tolerance and bioaccumulation were investigated by using thermo-tolerant Bacillus mojavensis. The level of U(VI) was measured by UV-VIS spectrophotometry. The minimum inhibition concentration (MIC) value of U(VI) was experimented. Bacterial growth was not affected in the presence of 1.0 and 2.5 mg/L U(VI) at 36 h and the growth was partially affected in the presence of 5 mg/L U(VI) at 24 h. What was obtained from this study is that there was diversity in the various periods of the growth phases of metal bioaccumulation capacity, which was shown by B. mojavensis. The maximum bioaccumulation capacities were found to be 12.8, 22.7, and 48.2 mg/g dried bacteria, at 24th hours at concentration of 1.0, 2.5 and 5 mg/L U(VI), respectively. In addition to these, U(VI) has been pre-concentrated on B. mojavensis immobilized MWCNT. Several factors such as pH, flow rate of solution, amount of biosorbent and support materials, eluent type, concentration and volume, the matrix interference effect on retention have been studied, and extraction conditions were optimized. Preconcentration factor was achieved as 60. Under the optimized conditions, the limit of detection (LOD) and quantification (LOQ) were calculated as 0.74 and 2.47 mu g/L. The biosorption capacity of immobilized B. mojavensis was calculated for U(VI) as 25.8 mg/g. The results demonstrated that the immobilized biosorbent column could be reused at least 30 cycles of biosorption and desorption with the higher than 95% recovery. FT-IR and SEM analysis were performed to understand the surface properties of B. mojavensis. (C) 2016 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.jenvman.2016.11.004
dc.identifier.endpage496
dc.identifier.issn0301-4797
dc.identifier.issn1095-8630
dc.identifier.pmid27856038
dc.identifier.scopus2-s2.0-85006820956
dc.identifier.scopusqualityQ1
dc.identifier.startpage490
dc.identifier.urihttps://doi.org/10.1016/j.jenvman.2016.11.004
dc.identifier.urihttps://hdl.handle.net/20.500.12604/6616
dc.identifier.volume187
dc.identifier.wosWOS:000392037500051
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherAcademic Press Ltd- Elsevier Science Ltd
dc.relation.ispartofJournal of Environmental Management
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.subjectBacillus mojavensis
dc.subjectResistance and bioaccumulatioh
dc.subjectSolid phase extraction preconcentration
dc.subjectU(VI)
dc.titleTolerance and bioaccumulation of U(VI) by Bacillus mojavensis and its solid phase preconcentration by Bacillus mojavensis immobilized multiwalled carbon nanotube
dc.typeArticle

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