软木松木的稀碱预处理：一种生物炼制方法。
Dilute alkali pretreatment of softwood pine: A biorefinery approach.
机构信息
Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; Industrial Biotechnology Group, Research Institute for Biotechnology and Bioengineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
出版信息
Bioresour Technol. 2017 Jun;234:67-76. doi: 10.1016/j.biortech.2017.03.030. Epub 2017 Mar 7.
Dilute alkali pretreatment was performed on softwood pine to maximize ethanol and biogas production via a biorefinery approach. Alkali pretreatments were performed with 0-2% w/v NaOH at 100-180°C for 1-5h. The liquid fraction of the pretreated substrates was subjected to anaerobic digestion. The solid fraction of the pretreatment was used for separate enzymatic hydrolysis and fermentation. High ethanol yields of 76.9‒78.0% were achieved by pretreatment with 2% (w/v) NaOH at 180°C. The highest biogas yield of 244mL/g volatile solid (at 25°C, 1bar) was achieved by the pretreatment with 1% (w/v) NaOH at 180°C. The highest gasoline equivalent (sum of ethanol and methane) of 197L per ton of pinewood and the lowest ethanol manufacturing cost of 0.75€/L was obtained after pretreatment with 1% NaOH at 180°C for 5h. The manufacturing cost of ethanol from untreated wood was 4.12€/L.
采用生物炼制方法，用稀碱预处理软木松木，以最大限度地提高乙醇和沼气的产量。在 100-180°C 下用 0-2%（w/v）NaOH 处理 1-5 小时进行碱预处理。预处理底物的液相进行厌氧消化。预处理的固相用于单独的酶解和发酵。用 2%（w/v）NaOH 在 180°C 预处理可获得 76.9-78.0%的高乙醇得率。用 1%（w/v）NaOH 在 180°C 预处理可获得 244mL/g 挥发性固体（在 25°C，1bar）的最高沼气产量。用 1%NaOH 在 180°C 下预处理 5 小时后，每吨松木的汽油当量（乙醇和甲烷之和）最高可达 197L，乙醇的制造成本最低，为 0.75 欧元/L。未经处理的木材生产乙醇的制造成本为 4.12 欧元/L。
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