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Title

The study of tellurite tolerance and its bioremoval by a halophilic actinobacterial strain, QS-2006

پنجمین کنگره بین المللی مهندسی شیمی
Year: 1386
COI: ICHEC05_346
Language: EnglishView: 1,544
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Authors

Maryam Khoshnoodi - Dept. of Microbiology, Faculty of Biology, College of Sciences, University of Tehran, Iran.
Mohammad Ali Amoozegar - Dept. of Microbiology, Faculty of Biology, College of Sciences, University of Tehran, Iran.
Javad Hamedi - Dept. of Microbiology, Faculty of Biology, College of Sciences, University of Tehran, Iran.

Abstract:

A Gram-positive moderately halophilic tellurite reducing actinobacterial strain was isolated from saline soil, and designated as strain QS-2006 .This strain showed high level tolerance to potassium tellurite up to 500 mM of tellurite. The liquid cultures of the strain QS-2006 reduce tellurite to its elemental and less toxic form. Tellurite removal was assayed by colorimetric method using diethyldithiocarbamate (DDTC). The results showed that at least 50% tellurite was removed in the presence of glucose or sucrose as a carbon source during 4 days. Effects of various factors including: temperature, mixing, various concentrations of salts and tellurite concentrations ware investigated. Mixing has an increasing effect on the removal rate. At concentration of 2mM by increasing the mixing from 0 to 220 rpm the removal rate reached up to 94%. At 34ºC and Te concentration of 0.4 mM and 2mM the removal is 69% and 92% respectively. Intracellular Te (0) deposits were showed by energy dispersive X -ray (EDX) analysis and transmission electron microscopic.

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This Paper COI Code is ICHEC05_346. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/46196/

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Khoshnoodi, Maryam and Amoozegar, Mohammad Ali and Hamedi, Javad,1386,The study of tellurite tolerance and its bioremoval by a halophilic actinobacterial strain, QS-2006,5th International Congress on Chemical Engineering,Kish Island,https://civilica.com/doc/46196

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  • Rajwade, J. M., and Paknikar, K. M., ،Bioreduction of tellurite ...
  • Pearion, C. T., and Jablonskei, P. E., *High level, intrinsic ...
  • Albarracin, V. H., Amoroso, M. J., and Abate, C. M., ...
  • Polti, M. A., Amoroso, M. J., and Abate, C. M., ...
  • Amoozegar, M. A., Ashengroph, M., Malekzadeh, F., Razavi, M, R., ...
  • Dehghan, S., Amoozegar, M. A., and Hamedi, J., ،The evaluation ...
  • Turner, R. J., Weiner, J. H., and Taylor, D. E., ...

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Type of center: دانشگاه دولتی
Paper count: 76,667
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