| 刘海林，陈金峰，邹春萍.4 种湿地植物 - 微生物燃料电池产电性能比较[J].广东农业科学,2019,46(12):27-35 |
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4 种湿地植物 - 微生物燃料电池产电性能比较 |
| Electricity Generation Performance of Plant Microbial FuelCells Separately Constructed by Four Wetland Plants |
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| DOI：10.16768/j.issn.1004-874X.2019.12.004 |
| 中文关键词: 湿地植物 微生物燃料电池 根系渗氧 阳极电位 阴极电位 |
| 英文关键词: wetland plants microbial fuel cell root oxygen loss anode potential cathode potential |
| 基金项目:广州市社会发展项目（201707010341）；广东省科技计划项目（2017A070702008） |
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| 中文摘要: |
| 【目的】植物 - 微生物燃料电池（P-MFC）是一种可持续的可再生能源生产方式，但不同植物构
建的 P-MFC 产电效果及其与外界环境条件和植物个体生理之间的关系仍有待探索。【方法】以巴拉草（Brachiaria
mutica）、短叶茳芏（Cyperus malaccensis var. brevifolius）、多枝扁莎（Pycreus polystachyus）、双穗雀稗（Paspalum
paspaloides）4 种湿地植物为材料构建 P-MFC，比较不同 P-MFC 的产电性能，分析 P-MFC 产电性能与植物自
身根系渗氧生理和外界环境因素（pH、溶解氧和温度）之间的关系。【结果】4 种不同植物构建的 P-MFC 产电
性能差异明显，平均功率密度分别为 : 巴拉草 4.25（±0.35）mW/m2、短叶茳芏 1.57（±0.35）mW/m2、多枝扁
莎 0.20（±0.09）mW/m2、双穗雀稗 4.38（±0.56） mW/m2；巴拉草和双穗雀稗 P-MFC 产电能力较强，这与巴
拉草根系渗氧速率较低、双穗雀稗阴极 pH 较低且较稳定有关；低根系渗氧率有利于维持低阳极电位，阴极低
pH 环境有利于维持较高阴极电位，从而使得电池整体输出电压较高。【结论】在利用湿地植物构建 P-MFC 时，
植物根系特点尤其是根系渗氧生理是需要重点考虑的因素。 |
| 英文摘要: |
| 【Objective】Plant-microbial fuel cell (P-MFC) is a sustainable way for renewable energy production,
but the electricity generation performance of P-MFC constructed by different plants and its relationship with external
environmental factors and individual plant physiology remains to be explored.【Method】In this study, different P-MFCs
were constructed by 4 wetland plants, including Brachiaria mutica, Cyperus malaccensis var. brevifolius, Pycreus
polystachyus and Paspalum paspaloides. The performance of P-MFCs and their relationships with radial oxygen loss (ROL)
and external environmental factors(pH, dissolved oxygen and temperature) were analyzed.【Result】The results showed
that the 4 constructed P-MFCs had significantly different performance in voltage output, the average voltage output were
4.25±0.35, 1.57±0.35, 0.20±0.09 and 4.38±0.56 mW/m2 for B. mutica, C. malaccensis var. brevifolius, P. polystachyus
and P. paspaloides, respectively. P-MFCs constructed with B. mutica and P. paspaloides produced more energy in general.This may be related to the lower rate of oxygen loss of B. mutica and the lower and stable pH in the cathode of P. paspaloidesMFC. The lower ROL helped to maintain a lower anode potential in B. mutica-MFC, while the lower cathode pH environment
contributed to the higher cathode potential in P. paspaloides-MFC.【Conclusion】When constructing P-MFCs from wetland
plants, the root features especially the root oxygen physiology should be taken into consideration. |
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