Bioethanol, biohydrogen and biogas production from wheat straw in a biorefinery concept
Bioethanol, biohydrogen and biogas production from wheat straw in a biorefinery concept
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DOI：
10.1016/j.biortech.2008.11.011
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发表时间：
2009-05-01
影响因子：
11.4
通讯作者：
Angelidaki, Irini
中科院分区：
文献类型：
--
作者：
Kaparaju, Prasad;Serrano, Maria;Angelidaki, Irini
在生物炼制框架内，研究了小麦秸秆生产生物乙醇、生物氢和沼气。最初，麦秸被水热分解为富含纤维素的纤维部分和半纤维素的液体部分（水解物）。纤维素酶解和随后的发酵产生0.41 g-乙醇/g-葡萄糖，而水解产物暗发酵产生178.0 ml-H-2/g-糖。进一步利用生物乙醇和生物氢工艺的出水生产甲烷，添加挥发性固体（VS）的产率分别为0.324和0.381 m(3)/kg。此外，对6种不同麦秸生物燃料生产方案的评估表明，与单独发酵C6糖时生产生物乙醇等单一燃料相比，使用麦秸生产沼气或生产多种燃料是能量效率最高的过程。因此，从小麦秸秆中生产多种生物燃料可以提高材料和能源的效率，并且可能是生物质利用的更经济的过程。(C) 2008 Elsevier Ltd版权所有。
The production of bioethanol, biohydrogen and biogas from wheat straw was investigated within a biorefinery framework. Initially, wheat straw was hydrothermally liberated to a cellulose rich fiber fraction and a hemicellulose rich liquid fraction (hydrolysate). Enzymatic hydrolysis and subsequent fermentation of cellulose yielded 0.41 g-ethanol/g-glucose, while dark fermentation of hydrolysate produced 178.0 ml-H-2/g-sugars. The effluents from both bioethanol and biohydrogen processes were further used to produce methane with the yields of 0.324 and 0.381 m(3)/kg volatile solids (VS)added, respectively. Additionally, evaluation of six different wheat straw-to-biofuel production scenaria showed that either use of wheat straw for biogas production or multi-fuel production were the energetically most efficient processes compared to production of mono-fuel such as bioethanol when fermenting C6 sugars alone. Thus, multiple biofuels production from wheat straw can increase the efficiency for material and energy and can presumably be more economical process for biomass utilization. (C) 2008 Elsevier Ltd. All rights reserved.