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KMID : 0380020130280030165
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Korean Journal of Biotechnology and Bioengineering
2013 Volume.28 No. 3 p.165 ~ p.169
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Isolation and Characterization of Ureolytic Bacteria for Biosequestration of Strontium
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Choi Jae-Ho
Kang Chang-Ho
Han Sang-Hyun
Kwak Dae-Young
Oh Soo-Ji
So Jae-Seong
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Abstract
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In this study, 52 ureolytic bacterial strains were newly isolated from various environments. From these, 2 strains (TB-15 and TB-22) were selected based on their high urease activity. XRD spectra clearly showed presence of various sequestration products such as calcite and strontianite in samples. TB-22 showed 20~30% higher survivability upon Sr concentration (20 mM) than Sporosarcina pasteurii KCTC 3558. TB-15 and TB-22 showed 80~90% higher survivability at pH 6 than S. pasteurii. The results demonstrated that the 2 isolates colud be good candidates for the bioremediation of Sr contaminated sites.
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KEYWORD
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MICP, Strontium, Sequestration, Calcite, Coprecipitation
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