Figure 9From: Impact of pretreatment and downstream processing technologies on economics and energy in cellulosic ethanol productionImpact of process water treatment on energy use, capital cost and electricity production. Figure illustrates the tradeoff between energy use and capital cost as the liquid stream after filter press is distributed among waste water treatment and evaporator. Blue and red lines show the total process energy and capital cost in the process per liter of ethanol. Green line shows the electricity produced from the excess steam (after using process steam) produced from lignin energy.Back to article page