2007 Fiscal Year Final Research Report Summary
Development of clean up technology for chlorinated organic compounds by using mirobes having high degradability
| Project/Area Number |
17206054
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Civil and environmental engineering
|
|---|
| Research Institution | Tohoku Gakuin University |
|---|
Principal Investigator |
NAKAMURA Kanji Tohoku Gakuin University, Dept of Civil and Environmental Eng., 教授 (90382655)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ENDO Ginro Tohoku Gakuin Univ, Dept. of Civil and Environmental Eng., 教授 (80194033)
FURUKAWA Kensuke Beppu Univ, Dept. of Food and Nutrition, 教授 (90221556)
|
|---|
| Project Period (FY) |
2005 – 2007
|
| Keywords | phonology / Game Theory / generative grammar / cognitive sciences / theory of communication / vcrA |
|---|
| Research Abstract |
1) Microbial population appeared at chlorinated ethene contaminated sites▲(most of TCE contaminants were transferred to cis-DCE)were analyzed by Terminal Restriction Fragment Length Polymorphism (T-RFLP). Clones of 16S rRNA gene were not from disease-causing bacteria or opportunistic infectious disease causing bacteria. We concluded that the process does not accelerate development of any harmful microbes.
2) Variations of DNA sequence of vinyl chloride reductase gene vcrA were analyzed at two TCE contaminated sites. All vcrA clones from different points at a site did not have the same DNA sequence. Slight changes in DNA sequences were found. This result suggest that a original vcrA gene has been changed with time at a site. Two sites surveyed showed almost the same trends. The gene of vcrA became a dominant dehalogenase gene among 7 cleaned up sites, showing that VcrA was a key enzyme for the complete dehalogenation.
3) In summary, Dehalococcoides strains having vcrA gene was found to play an important role for the complete dehalogenation at TCE clean up sites. And the process did not increase any risks derived from microorganisms developed during the treatment period.
|
