2011 Fiscal Year Final Research Report
New bioremediation strategy for the treatment of soil polluted by heavy metal
Project/Area Number |
21510091
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Environmental technology/Environmental materials
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Research Institution | Tokyo University of Technology |
Principal Investigator |
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Project Period (FY) |
2009 – 2011
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Keywords | 六価クロム / F. alba ST13^T / 活性化剤 / セラミック / 土壌 |
Research Abstract |
Flexivirga alba gen. nov., sp. nov., an actinobacterial taxon in the family Dermacoccaceae aerobically reduces hexavalent chromium. Strain ST13 reduce Cr(VI) aerobically. XANES analysis shows the presence of Cr(OH)_3 in precipitate, indicating the bacterial reduction of Cr(VI) to trivalent chromium(Cr(III)). The bacterial Cr(VI) reduction was more efficient in minimal medium supplemented with molasses than with glucose. Strain ST13 can attach on the surface of porous ceramics. The composition of ceramics affects the efficiency of bacterial attachment. Our data provide a basic information for the bioremediation of Cr(VI) using Cr(VI)-reducing strain ST13.
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