Optimal feeding strategy of diafiltration buffer in batch membrane processes

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dc.contributor.author Paulen, R.
dc.contributor.author Fikar, M.
dc.contributor.author Foley, G.
dc.contributor.author Kovacs, Z.
dc.contributor.author Czermak, Peter
dc.date.accessioned 2012-07-23T13:34:02Z
dc.date.available 2012-07-23T13:34:02Z
dc.date.issued 2012-07-23
dc.identifier.uri http://hdl.handle.net/2097/14059
dc.description.abstract This work addresses the optimal control strategy of diafiltration buffer utilisation in discontinuous membrane processes that are designed to fulfil the twin aims of concentration and fractionation. The problem of optimal process operation is formulated using a general membrane response model that encounters concentration-dependent flux and rejections. We consider two problems, operation time minimisation and diluant consumption minimisation, and we apply theory of optimal control and derive necessary conditions of optimality. Through selected case studies from the literature, we demonstrate how to apply the proposed methodology to determine optimal time-dependent wash-water feeding policy. The analytical results are confirmed by numerical computations, using numerical methods of dynamic optimisation. The presented methodology allows decision makers to analyse suboptimality of conventional diafiltration strategies in terms of processing time and diluant consumption. Results show that depending on the complexity of the membrane response model, it may be attractive to implement optimal trajectory. en_US
dc.relation.uri http://www.sciencedirect.com/science/article/pii/S0376738812003286 en_US
dc.subject Modelling en_US
dc.subject Diafiltration en_US
dc.subject Discontinuous operation en_US
dc.subject Optimal control en_US
dc.subject Dynamic optimisation en_US
dc.title Optimal feeding strategy of diafiltration buffer in batch membrane processes en_US
dc.type Article (author version) en_US
dc.date.published 2012 en_US
dc.citation.doi doi:10.1016/j.memsci.2012.04.028 en_US
dc.citation.epage 172 en_US
dc.citation.jtitle Journal of Membrane Science en_US
dc.citation.spage 160 en_US
dc.citation.volume 411-412 en_US
dc.contributor.authoreid pczermak en_US

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