Cost Estimates and Sensitivity Analyses for the Ammonia Fiber Explosion Process
Process designs were conducted for each unit of the conceptual ammonia fiber explosion (AFEX) process, and fixed capital investment and operating costs were estimated. AFEX costs about $20-40/t of dry biomass treated. Several promising areas for reducing process costs exist. Return on investment (ROI) calculations were also done for AFEX-treated materials (as digestibility-enhanced animal feeds), in conjunction with sensitivity analyses on the overall processing costs. Estimated ROIs range from over 100%/y to negative, depending on the system variables. The most important variables are the cost of corn and corn fiber, ammonia loading, and whether or not drying is required.
Index EntriesBiomass pretreatment cost estimation and economic analysis process design computer simulation ammonia fiber explosion
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