Please use this identifier to cite or link to this item: https://doi.org/10.1002/9781118341704.ch15
Title: Multi-Objective Optimization of a Hybrid Steam Stripper-Membrane Process for Continuous Bioethanol Purification
Authors: Gudena, K.
Rangaiah, G.P. 
Lakshminarayanan, S.
Keywords: ε-constraint method
Bioethanol purification
Hybrid steam stripper-membrane process
Multi-objective optimization
Issue Date: 2-Apr-2013
Source: Gudena, K.,Rangaiah, G.P.,Lakshminarayanan, S. (2013-04-02). Multi-Objective Optimization of a Hybrid Steam Stripper-Membrane Process for Continuous Bioethanol Purification. Multi-Objective Optimization in Chemical Engineering: Developments and Applications : 423-447. ScholarBank@NUS Repository. https://doi.org/10.1002/9781118341704.ch15
Abstract: Several ethanol-water separation technologies for continuous recovery and purification of bioethanol from fermentation broth are discussed in the literature. Recently, Huang et al. (Ind. Eng. Chem. Res. 2010, 49, 3760-3768) proposed a hybrid steam stripping-membrane separation process, and showed that energy consumption for separation is reduced by nearly half when compared with the conventional distillation process. In this chapter, detailed modeling of the hybrid stripper-membrane separation process in AspenPlus™ followed by its multi-objective optimization using the ?-constraint method is discussed. Several important objectives such as operating cost per unit of ethanol produced, ethanol purity of the product stream and ethanol loss in the waste stream are considered. There is no consensus on the limit for water in bioethanol as a fuel in different countries, and so ethanol purity is considered as one objective. Pareto-optimal solutions thus obtained for these conflicting objectives are useful to give a better understanding of the hybrid stripper-membrane process and for choosing one of them for the implementation as per the requirements. © 2013 John Wiley & Sons, Ltd.
Source Title: Multi-Objective Optimization in Chemical Engineering: Developments and Applications
URI: http://scholarbank.nus.edu.sg/handle/10635/90806
ISBN: 9781118341667
DOI: 10.1002/9781118341704.ch15
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