کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4419258 1618934 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anoxic biodegradation of petroleum hydrocarbons in saline media using denitrifier biogranules
ترجمه فارسی عنوان
تجزیه بیولوژیک بیوفیلد هیدروکربن های نفتی در رسانه های شور با استفاده از بیوتروژنی های دنیتریفیر
کلمات کلیدی
هیدروکربنهای نفتی؛ تجزیه زیستی؛ بیوگرافی دنیتریفیکاسیون؛ شرایط اضطراری
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


• TPH-biodegrading mesophilic denitrifiers were biogranulated in saline media.
• The biogranules composed of clustered Bacillus spp. bacteria was developed.
• Over 99% of 4 g/L TPH was biodegraded in saline media by anoxic biogranules.
• A maximum TPH biodegradation as high as 2.6gTPH/gbiomass.dgTPH/gbiomass.d was obtained.
• TPH biodegradation by anoxic biogranules was much faster than by other bioreactors.

The total petroleum hydrocarbons (TPH) biodegradation was examined using biogranules at different initial TPH concentration and contact time under anoxic condition in saline media. The circular compact biogranules having the average diameter between 2 and 3 mm were composed of a dense population of Bacillus spp. capable of biodegrading TPH under anoxic condition in saline media were formed in first step of the study. The biogranules could biodegrade over 99% of the TPH at initial concentration up to 2 g/L at the contact time of 22 h under anoxic condition in saline media. The maximum TPH biodegradation rate of 2.6 gTPH/gbiomass.dgTPH/gbiomass.d could be obtained at initial TPH concentration of 10 g/L. Accordingly, the anoxic biogranulation is a possible and promising technique for high-rate biodegradation of petroleum hydrocarbons in saline media.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 129, July 2016, Pages 51–56
نویسندگان
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