Removal of the fermentation inhibitor, furfural, using activated carbon in cellulosic -ethanol production
Removal of the fermentation inhibitor, furfural, using activated carbon in cellulosic -ethanol production
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DOI：
10.1021/ie2013983
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发表时间：
2011-11
影响因子：
4.2
通讯作者：
Kuang Zhang;M. Agrawal;Justin Harper;Rachel Chen;W. Koros
中科院分区：
文献类型：
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作者：
Kuang Zhang;M. Agrawal;Justin Harper;Rachel Chen;W. Koros
乙醇可以由木质纤维素生物质通过发酵生产;然而，来自木质纤维素的一些副产物，例如糠醛化合物，对发酵具有高度抑制性，并且可以显著降低乙醇生产的效率。在这项研究中，商业和聚合物衍生的活性炭被用来选择性地去除模型发酵抑制剂，糠醛，从生物乙醇生产过程中的水溶液。碳表面上的含氧官能团被发现会影响吸附剂在分离过程中抑制剂和糖之间的选择性。通过选择性去除发酵液中的抑制剂，发酵过程中细胞生长和乙醇生产效率得到明显恢复。设计了一个吸附/解吸循环，并在固定床柱系统中使用含乙醇的标准溶液再生吸附剂。经过4 ~ 5次循环后，再生效果稳定。
Ethanol can be produced from lignocellulosic biomass through fermentation; however, some byproducts from lignocellulosics, such as furfural compounds, are highly inhibitory to the fermentation and can substantially reduce the efficiency of ethanol production. In this study, commercial and polymer-derived activated carbons were utilized to selectively remove the model fermentation inhibitor, furfural, from water solution during bioethanol production. The oxygen functional groups on the carbon surface were found to influence the selectivity of sorbents between inhibitors and sugars during the separation. After inhibitors were selectively removed from the broth, the cell growth and ethanol production efficiency was recovered noticeably in the fermentation. A sorption/desorption cycle was designed, and the sorbents were regenerated in a fixed-bed column system using ethanol-containing standard solution. Dynamic mass balance was obtained after running four or five cycles, and regeneration results were stable e...