In situ synthesis of polypyrrole on graphite felt as bio-anode to enhance the start-up performance of microbial fuel cells
| Autor: | Kai-Bo Pu, Qing-Yun Chen, Yun-Hai Wang, Kai Zhang, Chuan-Xu Lu, He Zhang |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Microbial fuel cell Materials science Bioelectric Energy Sources Polymers Scanning electron microscope Bioengineering Electrochemistry Polypyrrole 01 natural sciences chemistry.chemical_compound Electrical resistivity and conductivity 010608 biotechnology Surface roughness Pyrroles Graphite Electrodes 010405 organic chemistry Electric Conductivity General Medicine 0104 chemical sciences Anode chemistry Chemical engineering Biotechnology |
| Zdroj: | Bioprocess and Biosystems Engineering. 43:429-437 |
| ISSN: | 1615-7605 1615-7591 |
| DOI: | 10.1007/s00449-019-02238-y |
| Popis: | This study introduces an effective method to deposit polypyrrole (PPy) on graphite felt (GF) as anode to improve the start-up performance of microbial fuel cells (MFCs). The results of scanning electron microscope (SEM) and electrochemical testing reveal that polypyrrole is able to improve the electrical conductivity and surface roughness, which is beneficial to the microorganism attachment and growth. It shows that microorganisms grow faster on polypyrrole-modified anode than on unmodified anode. It takes ca. 5 days for polypyrrole-modified anode to reach a reproducible voltage platform, while it takes 11 days for unmodified anode. Moreover, the maximum power density of microbial fuel cells with polypyrrole-modified anode was 919 mW m−2, which were 2.3 times of that with unmodified anode. This research revealed that polypyrrole modification can improve the start-up performance of microbial fuel cells. It is considered as a feasible, economical and sustainable anode. |
| Databáze: | OpenAIRE |
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