MaREI Centre, Environmental Research Institute (ERI), University College Cork (UCC), Ireland; School of Engineering, UCC, Ireland.
MaREI Centre, Environmental Research Institute (ERI), University College Cork (UCC), Ireland; School of Engineering, UCC, Ireland.
Bioresour Technol. 2016 Sep;216:238-49. doi: 10.1016/j.biortech.2016.05.050. Epub 2016 May 19.
Four feedstocks were assessed for use in a demand driven biogas system. Biomethane potential (BMP) assays were conducted for grass silage, food waste, Laminaria digitata and dairy cow slurry. Semi-continuous trials were undertaken for all feedstocks, assessing biogas and biomethane production. Three kinetic models of the semi-continuous trials were compared. A first order model most accurately correlated with gas production in the pulse fed semi-continuous system. This model was developed for production of electricity on demand, and biomethane upgrading. The model examined a theoretical grass silage digester that would produce 435kWe in a continuous fed system. Adaptation to demand driven biogas required 187min to produce sufficient methane to run a 2MWe combined heat and power (CHP) unit for 60min. The upgrading system was dispatched 71min following CHP shutdown. Of the biogas produced 21% was used in the CHP and 79% was used in the upgrading system.
四种原料被评估用于需求驱动的沼气系统。对草青贮、食物垃圾、海带和奶牛粪浆进行了生物甲烷潜力（BMP）测定。对所有原料进行了半连续试验，评估了沼气和生物甲烷的生产。比较了半连续试验的三种动力学模型。一阶模型最能准确地与脉冲进料半连续系统中的气体生产相关联。该模型是为按需发电和生物甲烷升级而开发的。该模型研究了一个理论上的草青贮消化器，该消化器在连续进料系统中可产生 435kW 的电力。适应需求驱动的沼气需要 187 分钟才能产生足够的甲烷，以运行一个 2MW 的热电联产（CHP）装置 60 分钟。升级系统在 CHP 关闭后 71 分钟被调度。在产生的沼气中，21%用于 CHP，79%用于升级系统。
