• About
  • Policies
  • What is open access
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Institute of Materials Science and Nanotechnology (UNAM)
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Institute of Materials Science and Nanotechnology (UNAM)
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Chromium(VI) biosorption and bioaccumulation by Live and acid-modified biomass of a novel morganella morganii isolate

      Thumbnail
      View / Download
      575.8 Kb
      Author(s)
      Ergul-Ulger, Z.
      Ozkan A.D.
      Tunca E.
      Atasagun, S.
      Tekinay, T.
      Date
      2014
      Source Title
      Separation Science and Technology (Philadelphia)
      Print ISSN
      0149-6395
      Publisher
      Taylor and Francis
      Volume
      49
      Issue
      6
      Pages
      907 - 914
      Language
      English
      Type
      Article
      Item Usage Stats
      200
      views
      305
      downloads
      Abstract
      Conventional methods of chromium removal are often insufficient for the remediation of chromium-contaminated natural environments, necessitating the development of alternative strategies. In this paper, we report the isolation of a novel Morganella morganii strain capable of reducing hexavalent chromium to its less-toxic and less-soluble trivalent form. Cr(VI) reduction by this strain was evaluated in both acidic environments and conditions reflecting natural freshwater sources. The isolate achieved equilibrium within 3 h and displayed a specific uptake rate of 24.30 ± 1.67 mg Cr(VI)/g biomass following HCl treatment. Without acid treatment, a reduction of over 90% was recorded within 72 h for an initial Cr(VI) concentration 20 mg/L, corresponding to a Cr(VI) removal capacity of 19.36 ± 1.89 mg/g. Absorption data of acid-treated STB5 biomass most closely followed the Toth and Langmuir models. FTIR results indicate that hydroxyl groups and extracellular or cell membrane polysaccharides may be potential adsorption sites for hexavalent chromium. Our results suggest that the isolate may be used in situ for treatment of polluted freshwater environments. Copyright © Taylor & Francis Group, LLC.
      Keywords
      Bioaccumulation
      Biosorption
      Chromium (VI)
      Enterobacteriacea
      heavy metal bioremediation
      Morganella morganii
      Bioaccumulation
      Biochemistry
      Biomass
      Bioremediation
      Biosorption
      Cell membranes
      Chromium compounds
      Cytology
      Heavy metals
      Water
      Acidic environment
      Conventional methods
      Enterobacteriacea
      Freshwater environments
      Freshwater sources
      Hexavalent chromium
      Morganella morganii
      Natural environments
      Chromium
      Permalink
      http://hdl.handle.net/11693/26447
      Published Version (Please cite this version)
      https://doi.org/10.1080/01496395.2013.866681
      Collections
      • Institute of Materials Science and Nanotechnology (UNAM) 2098
      Show full item record

      Related items

      Showing items related by title, author, creator and subject.

      • Thumbnail

        Phytoremediation of Cu, Cr and Pb mixtures by lemna minor 

        Üçüncü, E.; Tunca, E.; Fikirdeşici, S.; Özkan, A.D.; Altindaǧ, A. (2013)
        The present study reports the capacity of the aquatic macrophyte Lemna minor to remediate combinations of Cu(II), Pb(II) and Cr(III) from a simulated natural environment. The effect of these metal mixtures on the growth ...
      • Thumbnail

        Bacteria-immobilized electrospun fibrous polymeric webs for hexavalent chromium remediation in water 

        Sarioglu, O.F.; Celebioglu A.; Tekinay, T.; Uyar, Tamer (Springer Berlin Heidelberg, 2016)
        The development of hexavalent chromium remediating fibrous biocomposite mats through the immobilization of a hexavalent chromium reducing bacterial strain, Morganella morganiiSTB5, on the surfaces of electrospun polystyrene ...
      • Thumbnail

        Removal of a reactive dye and hexavalent chromium by a reusable bacteria attached electrospun nanofibrous web 

        Keskin, N. O. S.; Celebioglu A.; Sarioglu O.F.; Ozkan A.D.; Uyar, Tamer; Tekinay, T. (Royal Society of Chemistry, 2015)
        A contaminant resistant Lysinibacillus sp. NOSK was isolated from a soil sample and its Reactive Black 5 (RB5) and Cr(vi) removal efficiencies were investigated as a function of changes in the initial pH values, temperature, ...

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCoursesThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCourses

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 2976
      © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy