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Open Loop Optimal Operation and Sensitivity Analysis of a Continuous Biobutanol Fermentation Process with Ex-Situ Adsorption Recovery

机译:具有异位吸附回收的连续生物丁醇发酵过程的开环最佳操作和敏感性分析

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Biobutanol is considered to be an attractive biofuel due to its chemical similarity to gasoline, but low fermentation performance caused by butanol toxicity stands as a major obstacle in taking it to full commercialization. As a solution, an ex-situ recovery system with periodically switched adsorption column can be used to maintain the butanol concentration in a fermenter below the critical level. Due to the complex nature of the operation manifested by the periodic operation and the resulting cyclic steady state (CSS), it becomes a challenge to determine the optimal operation strategy of the system. In this study, an optimization problem is formulated to determine the operating condition to maximize a profit function at the CSS for a given feed concentration. This is followed by an open-loop sensitivity analysis to investigate the effect of uncertainties in the model parameters and adsorbent states on performance of the determined recipe.
机译:由于生物丁醇与汽油的化学相似性,它被认为是一种有吸引力的生物燃料,但是由于丁醇毒性导致的低发酵性能成为使其全面商业化的主要障碍。作为解决方案,可以使用具有定期切换的吸附塔的异位回收系统来将发酵罐中的丁醇浓度保持在临界水平以下。由于周期性操作和由此产生的循环稳态(CSS)所表现出的操作的复杂性,确定系统的最佳操作策略成为一项挑战。在这项研究中,制定了一个优化问题来确定操作条件,以在给定的饲料浓度下最大化CSS处的利润函数。随后进行开环敏感性分析,以研究模型参数和吸附剂状态的不确定性对确定配方性能的影响。

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