کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6484063 | 155 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of alternate use of methanol on n-hexane biofiltration and microbial community structure diversity
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Impact of alternate use of methanol on n-hexane biofiltration and microbial community structure diversity Impact of alternate use of methanol on n-hexane biofiltration and microbial community structure diversity](/preview/png/6484063.png)
چکیده انگلیسی
The impact of introducing and suspending methanol on n-hexane biodegradation in trickle-bed-air-biofilters (TBABs) and the associated changes in microbial biodiversity is evaluated in this study. Four TBABs with n-hexane loading rate of 13.2 g/m3 h were evaluated. Two TBABs operated at pH 4 and the remaining at pH 7. The concentration ratios of methanol to n-hexane were 3:1 and 5:1, providing methanol loading rates of 37.7 and 64.5 g/m3 h, respectively. The removal efficiency (RE) of n-hexane in presence of methanol under pH 4 fluctuated between 81 ± 5.7% and 88 ± 11.6%. While for TBABs operating under pH 7, the RE varied between 34 ± 12.7% and 69 ± 11.2%. Methanol suspension triggered n-hexane REs of 93% and 82% for TBABs operating at pH 4 and pH 7, respectively. 16S and 18S rDNA sequencing analysis suggested that methanol inhibited n-hexane biodegrading microorganisms, while its suspension enhanced the microbial community diversity and promoted enrichment of the functional microorganisms degrading n-hexane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical Engineering Journal - Volume 85, 15 April 2014, Pages 110-118
Journal: Biochemical Engineering Journal - Volume 85, 15 April 2014, Pages 110-118
نویسندگان
Abderrahman Zehraoui, Vikram Kapoor, David Wendell, George A. Sorial,