| 摘要: |
| 以天然海泥(BMFC-0)、外添加葡萄糖的海泥(BMFC-1)和外添加丹皮酚的海泥(BMFC-2)作为底物构建海底沉积物微生物燃料电池(BMFCs), 研究外源添加物对BMFCs 电池性能及电极性能的影响。结果表明, 丹皮酚对海泥中微生物具有明显抑制作用, 葡萄糖提高海泥中微生物的产电性能。通路状态下, BMFC-1 的阳极电位低于BMFC-0, BMFC-2 的阳极电位高于BMFC-0。电化学研究结果表明, BMFC-1 阳极生物膜中产电菌电化学活性高于BMFC-0, 而BMFC-2 产电菌的电化学活性受到抑制; BMFC-1 和BMFC-2 的阳极相对动力学活性分别是BMFC-0 的1.91 倍和0.67 倍。BMFC-1 的平均输出功率密度为7.294mW/m2, 分别是BMFC-0 (0.875mW/m2)和BMFC-2(0.106mW/m2)的8.3 和68.8 倍。根据添加物对阳极表面生物膜电容特性影响的分析, 提出阳极表面电容性质对电极及电池性能影响的独特机理。 |
| 关键词: 海底沉积物 微生物燃料电池 电化学性能 海泥 葡萄糖 丹皮酚 |
| DOI：10.11693/hyhz20140800223 |
| 分类号: |
| 基金项目:国家海洋局可再生能源专项项目, GHME2011GD04 号; 山东省自然科学重点基金项目, ZR2011BZ008 号。 |
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| IMPACT OF EXOGENOUS ADDITIVES ON THE PERFORMANCE OF MARINE BENTHONIC MICROBIAL FUEL CELLS |
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YING Ming1, LIU Zhao-Hui1, ZHAO Yang-Guo2, FU Yu-Bin1
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1.Institute of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China;2.College of Environment Science and Engineering, Ocean University of China, Qingdao 266100, China
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| Abstract: |
| We constructed marine sediment microbial fuel cells with three types of materials, i.e., natural sea mud (BMFC-0), sediment enriched with exogenous glucose (BMFC-1), and sediments enriched paeonol (BMFC-2). Results indicate that paeonol obviously suppresses the activity of bacteria in the sediment and glucose enhances the properties of bacteria electricity production process. In the circuit, the anode potential of BMFC-1 is lower than that of BMFC-0 and the anode potential of BMFC-2 is higher than that of BMFC-0. Electrochemical experiments show that the electrochemical vitality in the BMFC-1 anode biofilms is higher than that of the BMFC-0. The paeonol restrains bioelectrochemical activity of anode biofilms in BMFC-2. The relative dynamic activity of the anode in the BMFC-1 is 1.91 times greater than that in BMFC-0; for BMFC-2, and 0.67 times smaller than that in BMFC-0. The average output power density of the BMFC-1 is 7.294mW/m2, 8.3 times and 68.8 times greater than that of BMFC-0(0.875mW/m2) and BMFC-2(0.106mW/m2), respectively. According to the anodic biofilm capacities property, a unique mechanism is presented to explain the influence of anodic capacitance on the performance of electrodes and cells. |
| Key words: marine sediment microbial fuel cells electrochemical property sea mud glucose paeonol |
