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Enhanced fermentative hydrogen production from sugarcane processing derivatives using landfill leachate as a co-substrate

机译:使用垃圾填埋液作为共衬底的甘蔗加工衍生物增强发酵氢气产生

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Fermentation is a sustainable method to obtain H2, because the process allows the use of renewable raw materials as substrates. To be economically viable, fermentative approaches must produce H2 from low-cost raw materials. We investigated H2 production by a mixed culture using landfill leachate combined with derivatives from sugarcane processing, such as glucose, sucrose, molasses, and vinasse. Landfill leachate and sugarcane processing derivatives were characterized in terms of total organic carbon (TOC) and metal (Cu, Cd, Pb, Hg, Ni, and Fe) concentrations. Leachate and molasses contained the highest Fe concentrations. Leachate alone was not a suitable substrate for H2 production. However, blended with glucose, sucrose, molasses, and vinasse, the leachate enhanced the H2 production rate 2.0-, 2.8-, 4.6-, and 0.5-fold, respectively, compared with these substrates without the leachate. The use of these substrates could add value to the leachate by reducing its polluting power and generating a clean energy source. The use of these substrates could reduce the leachate polluting power by generating a clean energy source.
机译:发酵是获得H2的可持续方法,因为该过程允许使用可再生原料作为基材。在经济上可行,发酵方法必须从低成本原料生产H2。我们研究了使用垃圾填埋液相同的混合培养物生产的H2生产,所述含芳丙烷加工等衍生物,如葡萄糖,蔗糖,糖蜜和vinasse。垃圾填埋渗滤液和甘蔗加工衍生物的特征在于总有机碳(TOC)和金属(Cu,Cd,Pb,Hg,Ni和Fe)浓度。渗滤液和糖蜜含有最高的Fe浓度。单独的渗滤液不是合适的H2生产基材。然而,与葡萄糖,蔗糖,糖蜜和vinasse混合,与这些基材的渗透液分别增强了H2生产率2.0-,2.8-,4.6-和0.5倍,而不具有渗滤液。通过减少其污染力并产生清洁能源,使用这些基板可以向渗滤液增加值。使用这些基板可以通过产生清洁能源来减少渗滤液污染力。

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