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Modelling sugarcane vinasse processing in an acidogenic reactor to produce hydrogen with an ADM1-based model
International Journal of Hydrogen Energy ( IF 8.1 ) Pub Date : 2020-01-23 , DOI: 10.1016/j.ijhydene.2019.12.206
P.T. Couto , F. Eng , W. Naessens , I. Nopens , M. Zaiat , R. Ribeiro

Biohydrogen can be produced by dark fermentation of sugarcane vinasse, wastewater from the sugar-alcohol industry, in acidogenic anaerobic bioreactors. In this work, a model based on ADM1 was constructed to model anaerobic processing of sugarcane vinasse in an acidogenic batch reactor. Based on experimental data, hypotheses were put forward. Two new pathways were assumed: Acetate+LactateButyrate+Hydrogen and GlycerolButyrate+Hydrogen. A sensitivity analysis was carried out to reduce the number of free parameters, after which the model was calibrated with the experimental data. The proposed model was able to adequately describe sugar and glycerol consumption, acetate and lactate production and consumption and hydrogen and butyrate production over the operational time at an initial concentration of vinasse of 30kgCODm3. Nevertheless more improvements can be carried out to make the model more realistic and to cover intermediate metabolic pathways under conditions of lower vinasse concentration, such as 15kgCODm3 and 20kgCODm3.



中文翻译:

使用基于ADM1的模型来模拟产酸反应器中甘蔗酒的生产过程以产生氢气

可以通过在产酸厌氧生物反应器中对甘蔗酒(糖醇工业产生的废水)进行暗发酵来生产生物氢。在这项工作中,建立了一个基于ADM1的模型来模拟产酸间歇反应器中甘蔗酒糟的厌氧处理。根据实验数据,提出了假设。假定了两个新途径:一种CËŤ一种ŤË+大号一种CŤ一种ŤËüŤÿ[R一种ŤË+Hÿd[RØGËñGÿCË[RØüŤÿ[R一种ŤË+Hÿd[RØGËñ。进行灵敏度分析以减少自由参数的数量,然后用实验数据对模型进行校准。所提出的模型能够在酒糟初始浓度为50%的情况下,充分描述糖和甘油的消耗量,乙酸和乳酸的生产量和消耗量以及氢和丁酸的生产量。30ķGCØd-3。然而,可以进行更多的改进以使模型更加逼真并覆盖酒糟浓度较低的条件下的中间代谢途径,例如15ķGCØd-320ķGCØd-3

更新日期:2020-01-23
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