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Sustainable Chemical Processes
Fig. 2 | Sustainable Chemical Processes

Fig. 2

From: Combined production of biogas and ethanol at high solids loading from wheat straw impregnated with acetic acid: experimental study and techno-economic evaluation

Fig. 2

Energy efficiency of products. Energy efficiency is expressed as the energy content in the products divided by the incoming energy. The energy content was based on the LHV calculated from the heat of combustion values for the various materials. The incoming energy consists of the energy in the raw material, enzymes, and molasses and the energy for harvest and transport of the raw materials. The configurations are denoted C10–96, C12.5–96, C15–96, C17.5–96, C20–96, C20–120, C20–144, C20–168, and C20–192, where the first number refers to the WIS content in SSF (in %) followed by the time that was set for the SSF (in hour)

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