Characteristics of electricity generation and biodegradation in tidal river sludge-used microbial fuel cells.
Characteristics of electricity generation and biodegradation in tidal river sludge-used microbial fuel cells.
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DOI：
10.1016/j.biortech.2014.02.035
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发表时间：
2014-04
影响因子：
11.4
通讯作者：
N. Touch;T. Hibino;Yoshiyuki Nagatsu;Kouhei Tachiuchi
中科院分区：
文献类型：
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作者：
N. Touch;T. Hibino;Yoshiyuki Nagatsu;Kouhei Tachiuchi
研究了利用潮汐河道底泥制备微生物燃料电池（MFC）的产电行为，以及产电过程中底泥的生物降解性。虽然MFC的最大电流密度（150-300 mA/m2）高于淡水沉积物MFC的最大电流密度（30 mA/m2），但由于传质限制，MFC的输出电流受到很大限制。然而，我们的研究结果也表明，将阳极放置在污泥中的不同位置可以减少传质限制。经过约3个月的实验，有机碳的去除率约为10%，表明MFC对污泥的生物降解能力也比自然降解提高了近10倍。通过对污泥耗氧行为的研究发现，污泥的生物降解性可以通过耗氧行为来表征。重要的是，污泥的耗氧量随着发电而沿着升高。
The electricity generation behavior of microbial fuel cell (MFC) using the sludge collected from the riverbank of a tidal river, and the biodegradation of the sludge by the electricity generation are evaluated. Although the maximum current density (150–300 mA/m2) was higher than that of MFC using freshwater sediment (30 mA/m2), the output current was greatly restricted by the mass transfer limitation. However, our results also indicate that placing the anode in different locations in the sludge could reduce the mass transfer limitation. After approximately 3 months, the removal efficiency of organic carbon was approximately 10%, demonstrated that MFC could also enhance the biodegradation of the sludge by nearly 10-fold comparing with the natural biodegradation. We also found that the biodegradation could be identified by the behavior of oxygen consumption of the sludge. Importantly, the oxygen consumption of the sludge became higher along with the electricity generation.