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以合成气发酵菌株Clostridium autoethanogenum DSM10061为研究对象,研究改良DSM培养基640,添加玉米浆、焦油含量和产物浓度对合成气发酵的影响。结果表明:玉米浆浓度为0.175g/L时利于合成气乙醇发酵。适量的焦油有利于乙醇的生成,抑制乙酸的产生。低浓度的乙醇和乙酸能促进对应产物乙酸和乙醇的生成,但随着浓度的升高,乙醇和乙酸均会严重抑制产物的生成。
The fermentation of syngas was carried out with Clostridium autoethanogenum DSM10061 to study the effects of modified DSM medium 640, corn steep liquor, tar content and product concentration on the fermentation of syngas. The results showed that when the concentration of corn syrup was 0.175g / L, it was beneficial to the ethanol fermentation of syngas. The amount of tar is conducive to the formation of ethanol, inhibition of acetic acid production. Low concentration of ethanol and acetic acid can promote the formation of the corresponding products of acetic acid and ethanol, but with the increase of concentration, ethanol and acetic acid will seriously inhibit the product formation.