【摘要】 沉积物有机质种类对海泥电池阳极和输出功率具有重要影响。腐殖酸和木质素磺酸钠是海洋天然存在的有机质和海泥细菌营养底物，本文通过向500 g沉积物中分别添加2 g腐殖酸（HA组）和木质素磺酸钠（Lignin组）比较二者对海底沉积物微生物燃料电池性能的影响。结果表明，HA组和Lignin组阳极附近微生物数量分别提高到空白组的11.6和17.0倍。其循环伏安电容分别从70.455 F/m²（空白组）提高到265.152 F/m²（HA组）和704.199 F/m²（Lignin组）;交换电流密度分别是0.411×10^-3 mA/cm²（HA组）和0.585×10^-3 mA/cm²（Lignin组）较空白组(0.385×10^-3 mA/cm²)分别提高1.1和1.5倍；最大功率密度提高了1.6和1.9倍，分别达到438.578 mW/m²（HA组）和520.722 mW/m²（Lignin组）。上述结果表明腐殖酸和木质素磺酸钠均提高了海泥电池的阳极性能和输出功率，且木质素磺酸钠的影响更为显著。本研究将为海泥电池应用的海域选择和性能分析提供理论依据。更多还原

【Abstract】 Organic matter species have a significant impact on the anode performance and output power of marine sediments microbial fuel cells. Humic acid and sodium lignosulfonate are natural nutrient substrates for bacterial in the marine sediment. Humic acid（HA group） and sodium lignosulfonate（Lignin group） were added into sediments respectively to construct marine sediments microbial fuel cells in the paper. The results showed that the number of microorganisms nearby the anode of HA group and Lignin group was elevated to 11.6 and 17.0 times higher than blank group respectively. Their cyclic voltammetry capacitance increased from 70.455 F/m²（Blank group） to 265.152 F/m²（HA group） and 704.199 F/m²（Lignin group） respectively; The exchange current density was 0.411×10^-3 mA/cm²（HA group） and 0.385×10^-3 mA/cm²（Lignin group）, which was 1.1 and 1.5 times higher than blank group(0.585×10^-3 mA/cm²), respectively; The maximum power density was improved 1.9 and 2.8 times, reaching 49.991 mW/m²（HA group）and 72.100 mW/m²（Lignin group）, respectively. Humic acid and sodium lignosulfonate can improve the anode performance and output power of marine sediments microbial fuel cells, and the effect of sodium lignosulfonate is more significant. Therefore, the results will provide a theoretical basis for sea area selection and performance analysis of marine sediments microbial fuel cells.更多还原