Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.
Bioresour Technol. 2013 May;135:635-9. doi: 10.1016/j.biortech.2012.07.046. Epub 2012 Jul 22.
This study explored a new approach to the pretreatment of lignocellulosic biomass using FeCl3 combined with a fuel cell system to generate electricity. After pretreatment, ferric iron (Fe(3+)), a strong catalyst in the hydrolysis of carbohydrate, was found to be reduced to ferrous iron (Fe(2+)) by means of the oxidation of xylose and lignin. Ferrous iron, as a fuel, was employed to the anode part of a fuel cell, generating power of 1110 mW/m(2). During the fuel cell operation, ferrous iron was completely removed through oxidation to ferric iron and precipitated out. The optimal conditions for the operation of the fuel cell were found to be a pH of 7.0 and ferrous iron concentration of above 0.008 M. These results clearly show that a fuel cell system could be used not only to remove ferrous iron from liquid hydrolysate, but also to produce electricity.
本研究探索了一种使用 FeCl3 预处理木质纤维素生物质的新方法，并结合燃料电池系统来发电。预处理后，发现木糖和木质素的氧化作用将强催化剂三价铁（Fe(3+)）还原为二价铁（Fe(2+)）。二价铁作为燃料被应用于燃料电池的阳极部分，产生 1110 mW/m(2)的功率。在燃料电池运行过程中，二价铁通过氧化作用完全转化为三价铁并沉淀出来。研究发现，燃料电池运行的最佳条件为 pH 值为 7.0 和二价铁浓度高于 0.008 M。这些结果清楚地表明，燃料电池系统不仅可以去除液体水解物中的二价铁，还可以发电。
