Faculty of Agricultural Sciences, Department of Animal Sciences, Division Process Engineering, Georg-August-University of Göttingen, Universitätsstraße 7, 49377 Vechta, Germany.
Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Max-Eyth-Allee 100, 14469 Potsdam, Germany.
Bioresour Technol. 2015 Jan;175:8-16. doi: 10.1016/j.biortech.2014.10.041. Epub 2014 Oct 18.
Energetic use of complex lignocellulosic wastes has gained global interest. Thermophilic digestion of horse manure based on straw was investigated using the upflow anaerobic solid-state (UASS) process. Increasing the organic loading rate from 2.5 to 5.5gvsL(-)(1)d(-)(1) enhanced the average methane production rate from 0.387 to 0.687LCH4L(-)(1)d(-)(1), whereas the yield decreased from 154.8 to 124.8LCH4kgvs(-)(1). A single-stage and two-stage process design showed almost the same performance. Compared to prior experiments at mesophilic conditions, thermophilic conditions showed a significantly higher efficiency with an increase of 59.8% in methane yield and 58.1% in methane production rate. Additional biochemical methane potential (BMP) tests with two types of horse manure and four different bedding materials showed that wheat straw obtained the highest BMP. The results show that the thermophilic UASS process can be the key to an efficient energy recovery from straw-based manures.
能源化利用复杂的木质纤维素废弃物已引起全球关注。本研究采用上流式厌氧固态（UASS）工艺，以秸秆为基质对马粪进行了高温消化。当有机负荷率从 2.5gVS/(L·d)提高到 5.5gVS/(L·d)时，平均甲烷产率从 0.387LCH4/(L·d)提高到 0.687LCH4/(L·d)，而甲烷产率则从 154.8LCH4/kgVS 降低到 124.8LCH4/kgVS。单级和两级工艺设计几乎具有相同的性能。与中温条件下的先前实验相比，高温条件下的效率显著提高，甲烷产率提高了 59.8%，甲烷生成速率提高了 58.1%。对两种马粪和四种不同垫料进行的额外生物化学甲烷潜力（BMP）测试表明，小麦秸秆获得了最高的 BMP。结果表明，高温 UASS 工艺可能是从基于秸秆的粪肥中有效回收能源的关键。
