Laboratory of Environment-Enhancing Energy, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China.
Key Laboratory for Industrial Biocatalysis, Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Bioresour Technol. 2015 Jan;175:152-9. doi: 10.1016/j.biortech.2014.10.067. Epub 2014 Oct 18.
Understanding the role of furan derivatives, furfural (FUR) and 5-hydroxymethyl furfural (HMF), is important for biofuel production from lignocellulosic biomass. In this study, the effects of furan derivatives on hydrogen fermentation from wet steam-exploded cornstalk were investigated. The control experiments with only seed sludge indicated that HMF addition of up to 1g/L stimulated hydrogen production. Similar results were obtained using steam-exploded cornstalk as the feedstock. Hydrogen productivity was increased by up to 40% with the addition of HMF. In addition, over 90% of furan derivatives with an initial concentration below 1g/L were degraded. Pyosequencing showed that the addition of HMF and FUR resulted in different microbial communities. HMF led to a higher proportion of the genera Clostridium and Ruminococcaceae, supporting the increased hydrogen production. This study suggested that hydrogen fermentation could be a detoxifying step for steam-exploded cornstalk, and HMF and FUR exhibited different functions for hydrogen fermentation.
了解呋喃衍生物（糠醛（FUR）和 5-羟甲基糠醛（HMF））在木质纤维素生物质生物燃料生产中的作用非常重要。在这项研究中，研究了呋喃衍生物对湿蒸汽爆破玉米秸秆氢发酵的影响。仅用种子污泥进行的对照实验表明，添加高达 1g/L 的 HMF 可刺激氢气的产生。使用蒸汽爆破玉米秸秆作为原料时，也得到了类似的结果。添加 HMF 可使氢气生产率提高高达 40%。此外，初始浓度低于 1g/L 的超过 90%的呋喃衍生物被降解。基于 pyrosequence 的分析表明，添加 HMF 和 FUR 导致了不同的微生物群落。HMF 导致 Clostridium 和 Ruminococcaceae 属的比例更高，支持了氢气产量的增加。本研究表明，氢发酵可以作为蒸汽爆破玉米秸秆的解毒步骤，而 HMF 和 FUR 对氢发酵表现出不同的功能。
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