Author(s):
R. Paulen – M. Fikar – G. Foley – Z. Kovacs – P. Czermak
Title:
Optimal feeding strategy of diafiltration buffer in batch membrane processes
Journal:
Journal of Membrane Science
Year:
2012
Keyword(s):
Modelling, Diafiltration, Discontinuous operation, Optimal control, Dynamic optimisation
Volume:
411-412
Pages:
160–172
Month:
1 Sep 2012
Language:
English
Annote:
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.
ISSN:
0376-7388
DOI:
10.1016/j.memsci.2012.04.028

Category of publication:
ADC – Scientific papers published in foreign renowned journals
V3 – Vedecký výstup publikačnej činnosti z časopisu
Department:
OIaRP
Inserted/edited by:
doc. Ing. Radoslav Paulen, PhD.
Last change:
6.10.2018 13:06:44

Full text:
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BibTeX:
@article{uiam1296,
author={R. Paulen and M. Fikar and G. Foley and Z. Kovacs and P. Czermak},
title={Optimal feeding strategy of diafiltration buffer in batch membrane processes},
journal={Journal of Membrane Science},
year={2012},
keyword={Modelling, Diafiltration, Discontinuous operation, Optimal control, Dynamic optimisation},
volume={411-412},
pages={160-172},
month={1 Sep 2012},
annote={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.},
doi={10.1016/j.memsci.2012.04.028},
url={https://www.uiam.sk/assets/publication_info.php?id_pub=1296}
}