Animal & Grassland Research and Innovation Centre, Teagasc, Grange, Dunsany, Co. Meath, Ireland; Science Foundation Ireland (SFI), MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland; School of Engineering, University College Cork, Cork, Ireland.
Science Foundation Ireland (SFI), MaREI Centre, Environmental Research Institute, University College Cork, Cork, Ireland; School of Engineering, University College Cork, Cork, Ireland.
Bioresour Technol. 2017 Aug;238:633-642. doi: 10.1016/j.biortech.2017.04.088. Epub 2017 Apr 26.
The manual manometric biochemical methane potential (mBMP) test uses the increase in pressure to calculate the gas produced. This gas production may be affected by the headspace volume in the incubation bottle and by the overhead pressure measurement and release (OHPMR) frequency. The biogas and methane yields of cellulose, barley, silage and slurry were compared with three incubation bottle headspace volumes (50, 90 and 180ml; constant 70ml total medium) and four OHPMR frequencies (daily, each third day, weekly and solely at the end of experiment). The methane yields of barley, silage and slurry were compared with those from an automated volumetric method (AMPTS). Headspace volume and OHPMR frequency effects on biogas yield were mediated mainly through headspace pressure, with the latter having a negative effect on the biogas yield measured and relatively little effect on methane yield. Two mBMP treatments produced methane yields equivalent to AMPTS.
手动压力测量生物甲烷潜能（mBMP）测试使用压力增加来计算产生的气体。这种气体产量可能会受到培养瓶中的顶部空间体积以及顶部压力测量和释放（OHPMR）频率的影响。纤维素、大麦、青贮料和浆液的沼气和甲烷产量与三种培养瓶顶部空间体积（50、90 和 180ml；总介质 70ml 保持不变）和四种 OHPMR 频率（每日、每三天、每周和仅在实验结束时）进行了比较。大麦、青贮料和浆液的甲烷产量与自动容量法（AMPTS）进行了比较。顶空体积和 OHPMR 频率对沼气产量的影响主要通过顶空压力来调节，后者对测量的沼气产量有负面影响，对甲烷产量的影响相对较小。两种 mBMP 处理产生的甲烷产量与 AMPTS 相当。
