Department of Environmental Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark.
Bioresour Technol. 2010 Oct;101(19):7668-71. doi: 10.1016/j.biortech.2010.04.064.
The aim of this study was to elucidate the effect of steam pretreatment on the biomethane potential of biofibers from digested manure. These biofibers were treated for 15 min with steam in a pressure vessel. The effect of steam treatment temperature, solids content, catalyst concentration and time of pre-soaking on the methane potential of the biofibers was determined. The highest increase of methane production from steam-treated biofibers compared to untreated biofibers was 67% and was achieved at 155 degrees C with addition of 2.1% w/w H2SO4. Also higher treatment temperatures (180 degrees C without addition of acid) improved the methane production, but only by 29% compared to untreated biofibers. Long pre-soaking treatment (24 h) and high acid concentration increased the risk of inhibition of the biogas process. The energy from the increased methane production after steam treatment was between 15 and 121 kW h (t WW)(-1) (wet weight of untreated biofibers).
本研究旨在阐明蒸汽预处理对消化粪便中生物纤维的生物甲烷潜力的影响。这些生物纤维在压力釜中用蒸汽处理 15 分钟。研究了蒸汽处理温度、固含量、催化剂浓度和预浸泡时间对生物纤维甲烷潜力的影响。与未经处理的生物纤维相比，蒸汽处理后的生物纤维的甲烷产量最高增加了 67%，在添加 2.1%w/w H2SO4 的情况下，在 155°C 时达到最高。较高的处理温度（180°C 不加酸）也提高了甲烷产量，但与未经处理的生物纤维相比仅提高了 29%。长时间的预浸泡处理（24 小时）和高酸浓度增加了沼气过程抑制的风险。蒸汽处理后甲烷产量增加所产生的能量在 15 至 121kW h（t WW）（-1）（未经处理的生物纤维湿重）之间。
