海带残渣微生物燃料电池产电性能研究
首发时间:2017-10-06
摘要:以海带残渣为原料,在酸盐协同作用下水解产还原糖,并以水解液作为底物构建了一种藻类微生物燃料电池(MFC)。选用盐酸和氯化镁作为海带残渣水解的催化剂,设计反应温度、反应时间、HCl浓度、MgCl2浓度四因素三水平Box-Behnken试验,并以还原糖浓度作为响应值,确定了最优工艺参数: 反应温度121 ℃、反应时间64 min、HCl浓度1.85%,MgCl2浓度0.5%,最终还原糖浓度为17.10 mg/mL。以稀释后的海带水解液作为微生物燃料电池底物进行产电分析,结果表明:当加入海带水解液12 mL,pH值为6.68时,电池最大功率密度最高,为0.57 W/m2。
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Research on the performance of electricity generation from kelp residue-fed Microbial Fuel Cell
Abstract:The goal of this work was to produce reducing sugar of kelp residue by using acid and salt as catalyst and developed a microbial fuel cell for the direct power generation using kelp residue hydrolysates as fuel. Hydrochloric acid and magnesium chloride was selected as the catalyst for the hydrolysis of kelp, temperature, time, concentration of hydrochloric acid and magnesium chloride as three-level four-factors box-bohnken design, the reducing sugars yield was used as the response values for the characterization of the catalyst. The result shows that the optimum conditions was 121℃, 64min, 1.85% hydrochloric acid and 0.5% magnesium chloride. We also developed a microbial fuel cell using kelp hydrolysates as substrates. The maximum power density reached 0.57W/m2 under the condition of 12mL kelp hydrolysates and 6.68 pH.
Keywords: Microbial fuel cells;kelp residue;hydrolysis;The response surface method
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