کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1292024 | 973380 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Electricity generation from acetate and glucose by sedimentary bacterium attached to electrode in microbial-anode fuel cells Electricity generation from acetate and glucose by sedimentary bacterium attached to electrode in microbial-anode fuel cells](/preview/png/1292024.png)
Microbial-anode fuel cells (MAFCs) with high electron recovery (>50%) from acetate and glucose have been constructed in this study. By inoculating fresh sedimentary microorganisms into anaerobic anode compartments, a stable current (∼0.42 mA for acetate-fed MAFCs; ∼0.35 mA for glucose-fed MAFCs) is generated from the oxidation of the added organic matter until its concentration decreases to a low level. SEM micrographs indicate that thick biofilms of microbial communities (coccoid cells with a diameter of ∼0.5 μm in acetate-fed MAFCs; rod-shaped cells with a length of 2.0–4.0 μm and a width of 0.5–0.7 μm in glucose-fed MAFCs) completely cover the anode electrodes. These anodophillic biofilms are thought to be responsible for the current generation, and make these microbial-anode fuel cells exhibit good performance even when the growth medium is replaced by a salt buffer without any growth factor. In comparison with those microbial fuel cells that require the addition of artificial electron transfer-mediating compounds, the findings in this study imply a potential way to develop excellent mediator-less MAFCs for electricity generation from organic matter by using substrate-induced anodophillic microbial species.
Journal: Journal of Power Sources - Volume 161, Issue 2, 27 October 2006, Pages 820–825