کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4364056 1616301 2017 6 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication of novel rhamnolipid-oxygen-releasing beads for bioremediation of groundwater containing high concentrations of BTEX
ترجمه فارسی عنوان
ساخت جدید مهره rhamnolipid اکسیژن آزاد برای اصلاح زیستی از آب های زیرزمینی حاوی غلظت بالایی از BTEX
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کلمات کلیدی
اکسیژن آزاد مواد؛ Biosurfactant؛ BTEX؛ آب های زیرزمینی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
چکیده انگلیسی


• Novel biosurfactant-oxygen releasing beads (BS-ORB) were prepared using RSM.
• BS-ORB released oxygen and biosurfactant for a long time.
• BS-ORB improved the bioremediation of high concentration of BTEX in groundwater.

In this work, biosurfactant-containing oxygen-releasing beads (BS-ORBs) were prepared and used for the bioremediation of BTEX in groundwater. The response surface methodology (RSM) was utilized to optimize the BS-ORBs. The results reveal that the optimal proportions of polyvinyl alcohol (PVA), biochar, CaO2, alginate, biosurfactant, and citrate were 33%, 32.5%, 13%, 13%, 5.8%, and 2.6% (w/w), respectively. The integrality ratio of optimized BS-ORB was 3.81%. The regression equation obtained from RSM accurately predicted the integrality ratio (R2 = 0.994). The BS-ORBs continuously released oxygen (>0.5 mg/L) for 128 days. The concentration of the biosurfactant was maintained above 30 mg/L for 58 days. Batch experiments indicated that adding BS-ORB improved the bioremedation of the groundwater that contained high levels of BTEX (120 mg/L) for three cycles. These results indicate that the BS-ORBs are a potential oxygen-releasing material for the biomediation of groundwater that is contaminated with a high concentration of BTEX.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 116, January 2017, Pages 58–63
نویسندگان
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