کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11026134 | 1666434 | 2018 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of bio-desulfurization capability of a newly isolated thermophilic bacterium using starch/iron nanoparticles in a controlled system
ترجمه فارسی عنوان
افزایش قابلیت زیستی سولفوریزاسیون باکتری ترموفیلم تازه ای جدا شده با استفاده از نانوذرات نشاسته / آهن در یک سیستم کنترل شده
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کلمات کلیدی
DMFHDSBDSBSMDBTMNPs - MNP هاTem - این استThermophilic bacterium - باکتری ترموفیلBenzothiophene - بنزوتیوفنDibenzothiophene - دیانزوتیوفنResponse surface methodology - روش سطح پاسخRSM - روششناسی سطح پاسخSEM - مدل معادلات ساختاری / میکروسکوپ الکترونی روبشیscanning electron microscope - میکروسکوپ الکترونی اسکنTransmission electron microscope - میکروسکوپ الکترونی انتقالMagnetic nanoparticles - نانوذرات مغناطیسی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
Due to the increasing application of oil and petroleum products, increased environmental contamination has become a matter of concern. Bio-desulfurization process may be used to eliminate sulfur from fossil fuels in the moderate condition. In this study, a thermophilic bacterium was isolated that was able to desulfurize dibenzothiophene. 16S rRNA sequencing indicated that this strain is related closely to Bacillus thermoamylovorans (97%). This strain grew in Basal salt medium containing DBT (100â¯mglâ1) as the only sulfur source, at 55°C and showed maximum growth (OD660â¯=â¯0.850) following 72â¯h incubation time. 2âhydroxybiphenyl was produced at the maximal concentration (26.13â¯Â±â¯0.12â¯mglâ1) at 72â¯h. Bio-desulfurization and growth rate factors were optimized using response surface methodology. Starch/Fe3O4 and starch/Fe nanoparticles were used for enhancement of BDS efficiency. The size of starch/Fe3O4 and starch/Fe nanoparticles were 20 and 30-40â¯nm, respectively, as described by using scanning electron microscope and transmission electron microscope. The results showed that the immobilized cells by starch/Fe3O4 and starch/Fe nanoparticles had higher desulfurization capacity, about 10% and 22% more, respectively. Also, BDS in a bioreactor in the presence of nanoparticles was increased 25% with respect of the process occurred in the flask.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 120, Part B, December 2018, Pages 1801-1809
Journal: International Journal of Biological Macromolecules - Volume 120, Part B, December 2018, Pages 1801-1809
نویسندگان
Narges Etemadi, Abbas Akhavan Sepahy, Ghasemali Mohebali, Fatemeh Yazdian, Meisam Omidi,