We demonstrate the feasibility of algal lipid production and bioelectricity generation with concurrent treatment of municipal solid waste (MSW) leachate in a double-chamber algal-assisted microbial fuel cell (AAMFC). The cathode chamber was loaded with Synechococcus sp. and MSW leachate whereas anode chamber was loaded with anaerobic microflora. While treating 50% MSW leachate, highest power density (95.63 mW/m2), current density (2.48 A/m2), and biomass concentration (2.54 g/l) were observed. The algal growth in the cathode chamber increased the oxygen concentration from 5.5 to 8.6 mg/l. Secondly, we studied the influence of salinity in AAMFC performance. The addition of 30 mM NaCl with 50% leachate increased the power and current density to 110.92 mW/m2 and 5.169 A/m2, respectively. It also increased the biomass concentration, protein, and lipid content. The analysis of fatty acid profile of algae confirmed the presence of palmitic acid, stearic acid, and linoleic acid. The proposed technique is effective for concurrent treatment of MSW leachate and power generation besides algal lipid production without external aeration.

中文翻译：

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使用藻类辅助微生物燃料电池从城市垃圾填埋场渗滤液中产生碳中性电力。

我们展示了在双室藻类辅助微生物燃料电池（AAMFC）中同时处理城市固体废物（MSW）渗滤液的藻类脂质生产和生物发电的可行性。阴极室装有Synechococcus sp.。MSW渗滤液，而阳极室装有厌氧菌群。处理50％的城市固体垃圾渗滤液时，观察到最高功率密度（95.63 mW / m2），电流密度（2.48 A / m2）和生物质浓度（2.54 g / l）。阴极室中藻类的生长使氧气浓度从5.5毫克/升增加到8.6毫克/升。其次，我们研究了盐度对AAMFC性能的影响。添加30 mM NaCl和50％沥出液可将功率和电流密度分别提高到110.92 mW / m2和5.169 A / m2。它还增加了生物质浓度，蛋白质，和脂质含量。藻类脂肪酸谱的分析证实了棕榈酸，硬脂酸和亚油酸的存在。所提出的技术除了可产生藻类脂质且无需外部曝气外，还可以有效地同时处理城市生活垃圾渗滤液和发电。