کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7721542 | 1497510 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bioelectrochemical analyses of a thermophilic biocathode catalyzing sustainable hydrogen production
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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چکیده انگلیسی
To achieve sustainable hydrogen production by microbial electrolysis cell (MEC) without precious metal catalysts, we examined the potential of thermophilic microorganisms as biocatalysts on the cathode of MEC. A biocathode was firstly developed in a single-chambered MEC operated at 55 °C and further analyzed in a two-chambered MEC. Linear sweep voltammetry showed that the biocathode had a reducing activity significantly higher than the control electrodes (bioanode or non-inoculated electrode). At the potential of â0.8 V vs. SHE, the thermophilic biocathode produced a current density of 1.28 ± 0.15 A mâ2 and an H2 production rate of 376.5 ± 73.42 mmol dayâ1 mâ2, which were around 10 times higher than those of the non-inoculated electrode, with the cathodic H2 recovery of ca. 70%. The molecular-phylogenetic analysis of the bacteria on the biocathode indicated that the community was comprised of six phyla, in which Firmicutes was the most populated phylum (77% of the clones in the 16S rRNA library).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 35, 22 November 2013, Pages 15638-15645
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 35, 22 November 2013, Pages 15638-15645
نویسندگان
Qian Fu, Hajime Kobayashi, Yoshihiro Kuramochi, Jing Xu, Tatsuki Wakayama, Haruo Maeda, Kozo Sato,