Enhanced power performance of an in situ sediment microbial fuel cell with steel-slag as the redox catalyst: I. electricity generation,Sustainable Energy & Fuels

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Enhanced power performance of an in situ sediment microbial fuel cell with steel-slag as the redox catalyst: I. electricity generation
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2020/01/09 , DOI: 10.1039/c9se00918c
Kyeongmin Kim _{1,

2,

3,

4} , Shinya Nakashita _{1,

2,

3,

4} , Tadashi Hibino _{1,

2,

3,

4}

Affiliation

Steel-slag was added as a catalytic material of redox reaction to sediment microbial fuel cells (SMFCs) in an in situ sediment biodegradation experiment to determine its benefits in the long-term power production of the cells and to elucidate the external factors affecting power production. The steel-slag was found to consistently increase the power generated, and over a period of two years, the combination produced six times more charge than that of an SMFC alone (1549 C per day), which was superior to that of conventional SMFCs reported in the literature. After two years of electron-harvesting, the redox potential of pore water rose to the level at which hydrogen sulfide and ammonia can be oxidized. Upon investigation, rapid changes or fluctuations in power production were found to be cathode-related, for example, if it was damaged, or variations in the ambient environmental conditions, such as dissolved oxygen, algal activity, etc., affected its performance. In particular, algal activity appeared within nine days, which led to a 68% increase in the average current density during the day vs. the night.

中文翻译：

钢渣作为氧化还原催化剂的原位沉积微生物燃料电池的动力性能增强：I.发电

将钢渣作为氧化还原反应的催化材料原位添加到沉淀微生物燃料电池（SMFC）沉积物生物降解实验，以确定其在细胞长期发电中的益处，并阐明影响发电的外部因素。发现钢渣会不断增加发电量，并且在两年的时间里，这种组合产生的电荷比单独的SMFC（每天1549 C）高出六倍，这比报道的传统SMFC优越。在文学中。经过两年的电子捕集，孔隙水的氧化还原电势上升到可以氧化硫化氢和氨的水平。经调查，发现电力生产的快速变化或波动与阴极有关，例如，如果受损，或周围环境条件的变化，例如溶解氧，藻类活性等。，影响了它的性能。特别是，藻类活性在9天之内出现，导致白天的平均电流密度相对于夜间增加了68％。

更新日期：2020-03-03

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