Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain.
Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain.
Bioresour Technol. 2016 Jan;200:311-9. doi: 10.1016/j.biortech.2015.10.051. Epub 2015 Oct 17.
Dried pellet of exhausted sugar beet cossettes were digested alone and combined with cow manure as co-substrate in a mesophilic semi-continuous anaerobic system. In single digestion assay, the stable biogas production and stable reactor operation was observed at the hydraulic retention time (HRT) of 20days (OLR: 3.26gVS/Lreactord) which was the minimum HRT tolerated by the system. However, co-digestion with cow manure allowed to decrease the HRT until 15days (OLR: 4.97gVS/Lreactord) with 32% higher biogas generation and efficient reactor operation. Propionic acid was the predominant VFA observed during single digestion assay failure, while acetic acid accumulation was observed in the co-digestion assay. In both single and co-digestion assays, the recovery of digesters was possible by ceasing the feeding and re-inoculation with a well-adapted inoculum.
废弃糖甜菜短纤的干颗粒在中温条件下的半连续厌氧系统中单独消化，并与牛粪混合作为共底物。在单消化试验中，在水力停留时间（HRT）为 20 天（OLR：3.26gVS/L 反应器）时观察到稳定的沼气产生和稳定的反应器运行，这是系统所能承受的最短 HRT。然而，与牛粪共消化允许将 HRT 降低到 15 天（OLR：4.97gVS/L 反应器），沼气产量提高 32%，反应器运行效率更高。在单消化试验失败期间，主要观察到丙酸是 VFA，而在共消化试验中则观察到乙酸积累。在单消化和共消化试验中，通过停止进料并用适应性良好的接种物重新接种，可以使消化器恢复。
