Techno-Economic Analysis of Integrating First and Second-Generation Ethanol Production Using Filamentous Fungi: An Industrial Case Study

摘要: The 2nd generation plants producing ethanol from lignocelluloses demand risky and high investment costs. This paper presents the energy- economical evaluations for integrating lignocellulose in current 1st dry mill processes, using filamentous fungi. Dry mills use grains have mills, liquefactions, saccharifications, fermentation, distillation to produce ethanol, while their stillage passes centrifugation, evaporation recycle water cake evaporated syrup into animal feed. In this work, a bioreactor was considered cultivate fungi on either before or after centrifugation step together with pretreated lignocellulosic wheat bran. results showed that integrated process requires capital of 77 million USD, which could yield NPV 162 USD 20 years. Compared fungal cultivation thin modified process, resulted 53 higher NPV. energy analysis reduce overall consumption by 2.5% increase production 4%. Such modifications processes integration concepts be interesting industries, as existing setup less investment.