The study of tellurite tolerance and its bioremoval by a halophilic actinobacterial strain, QS-2006
Publish place: 5th International Congress on Chemical Engineering
Publish Year: 1386
نوع سند: مقاله کنفرانسی
زبان: English
View: 1,851
This Paper With 7 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICHEC05_346
تاریخ نمایه سازی: 7 بهمن 1386
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.
Keywords:
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.
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :