Impact of Shewanella oneidensis on heavy metals remobilization under reductive conditions in soil of Guilan Province, Iran
- 66 Downloads
Remobilization of heavy metals in contaminated soil due to anaerobic bioreduction by Shewanella oneidensis was studied. Glucose and anthraquinone-2,6-disulphonate (AQDS) were used as an electron donor and an electron shuttle, respectively. The bioreduction caused a gradual increase in dissolved Mn(II) concentration upto 15 days followed by stationary state. The aqueous Fe(II) concentration increased and reached a highest level on the 10th day, followed by a slight decrease before the steady state was reached. The concentration of Cu(II) was at its extreme level on 5th day and then decreased before reaching the steady state. The highest dissolution was observed for Zn(II) on the 10th day followed by a decrease upto 25th day. Enhanced reduction of Fe(III) and mobilization of selected heavy metals were observed in the presence of S. oneidensis and AQDS. The soluble and acid-extractable Fe(II) concentration was higher in the presence of glucose. The remobilization efficiencies of Mn(II), Fe(II), Cu(II), and Zn(II) were 41%, 48%, 53%, and 63%, respectively. After bioreduction, Fe(II)/Cu(II) and Mn(II)/Zn(II) posed moderate and high risks, respectively. The results of this study will be useful to highlight the effects of variable redox conditions on the bioreduction process to determine the bioavailability of heavy metals in soil.
Key wordsanaerobic conditions Shewanella oneidensis iron oxyhydroxide remobilization reductive dissolution
Unable to display preview. Download preview PDF.
- ASTM D422, 2007, Standard test method for particle-size analysis of soil. American Society for Testing and Materials International, West Conshohocken, 2–7p. DOI: 10.1520/D0422-63R07E02Google Scholar
- Ayyasamy, P.M., Chun, S., and Lee, S., 2009, Desorption and dissolution of heavy metals from contaminated soil using Shewanella sp. (HN-41) amended with various carbon sources and synthetic soil organic matters. Journal of Hazardous Materials, 161, 1095–1102.Google Scholar
- Bao, S.D., 2005, Soil Agricultural Chemistry Analysis. China Agriculture Press, Beijing, 270 p.Google Scholar
- Dong, H., Kukkadapu, R., Fredrickson, J.K., Zachara, J.M., Kennedy, D.W., and Kostandarithes, H.M., 2003a, Microbial reduction of structural Fe(III) in illite and goethite. Environmental Science and Technology, 37, 1268–1276.Google Scholar
- Dong, H., Kostka, J.E., and Kim, J.W., 2003b, Microscopic evidence for microbial dissolution of smectite. Clays and Clay Minerals, 51, 502–512.Google Scholar
- EPA-ROC, 1994, The standard methods for determination of heavy metals in soils and plants. National Institute of Environmental Analysis of EPA-ROC, Taipei, p. 5–8.Google Scholar
- Kostka, J.E., Dalton, D.D., Skelton, H., Dollhopf, S., and Stucki, J.W., 2002, Growth of iron(III)-reducing bacteria on clay minerals as the sole electron acceptor and comparison of growth yields on a variety of oxidized iron forms. Applied and Environmental Microbiology, 68, 6256–6262.CrossRefGoogle Scholar
- Lee, J.H., Roh, Y., and Hur, H.G., 2008, Microbial production and characterization of super paramagnetic magnetite nanoparticles by Shewanella sp. HN-41. Journal of Microbiology and Biotechnology, 18, 1572–1577.Google Scholar
- Mescouto, C.S.T., Lemos, V.P., Dantas Filho, H.A., da Costa, M.L., Kern, D.C., and Fernandes, K.G., 2011, Distribution and availability of copper, iron, manganese and zinc in the archaeological black earth profile from the amazon region. Journal of the Brazilian Chemical Society, 22, 1484–1492.Google Scholar
- Muehe, E.M., Adaktylou, I.J., Obst, M., Zeitvogel, F., Behrens, S., Planer-Friedrich, B., Kraemer, U., and Kappler, A., 2013, Organic carbon and reducing conditions lead to cadmium immobilization by secondary Fe mineral formation in a pH-neutral soil. Environmental Science and Technology, 47, 13430–13439.CrossRefGoogle Scholar
- Opuene, K. and Agbozu, I.E., 2008, Relationships between heavy metals in shrimp (Macrobrachium felicinum) and metal levels in the water column and sediments of Taylor Creek. International Journal of Environmental Research, 2, 343–348.Google Scholar