Biosystems and Agricultural Engineering Department, Oklahoma State University, Stillwater, OK, USA.
Biosystems and Agricultural Engineering Department, Oklahoma State University, Stillwater, OK, USA.
Bioresour Technol. 2015 Aug;189:292-301. doi: 10.1016/j.biortech.2015.04.018. Epub 2015 Apr 12.
The present study evaluated butanol production from switchgrass based on hydrothermolysis pretreatment. The inhibitors present in the hydrolyzates were measured. Results showed poor butanol production (1g/L) with non-detoxified hydrolyzate. However, adjusting the pH of the non-detoxified hydrolyzate to 6 and adding 4 g/L CaCO3 increased butanol formation to about 6g/L. There was about 1g/L soluble lignin content (SLC), and various levels of furanic and phenolic compounds found in the non-detoxified hydrolyzate. Detoxification of hydrolyzates with activated carbon increased the butanol titer to 11 g/L with a total acetone, butanol and ethanol (ABE) concentration of 17 g/L. These results show the potential of butanol production from hydrothermolysis pretreated switchgrass.
本研究评估了基于水热预处理从柳枝稷生产丁醇。测量了水解物中的抑制剂。结果表明，未经解毒的水解物中丁醇产量低（1g/L）。然而，将非解毒水解物的 pH 值调节至 6 并添加 4g/L 的 CaCO3 可将丁醇生成量提高到约 6g/L。非解毒水解物中含有约 1g/L 的可溶性木质素（SLC）和不同水平的呋喃和酚类化合物。用活性炭对水解物进行解毒可将丁醇浓度提高到 11g/L，总丙酮、丁醇和乙醇（ABE）浓度达到 17g/L。这些结果表明了从水热预处理的柳枝稷生产丁醇的潜力。
