Optimal Operational Profiles in an Electrodialysis Unit for Ion Recovery

Electrodialysis is an efficient process for the cleaning of industrial water effluent streams from toxic ionic substances with the simultaneous recovery of valuable ions for reuse. Energy consumption and waste recovery are the two key goals of the process. A dynamic optimisation program aims to dete...

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Autores principales:	Athanasios Latinis, Athanasios I. Papadopoulos, Panos Seferlis
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/da6dff296166424083502c4775cb74f3
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spelling	oai:doaj.org-article:da6dff296166424083502c4775cb74f32021-11-15T21:47:19ZOptimal Operational Profiles in an Electrodialysis Unit for Ion Recovery10.3303/CET21881702283-9216https://doaj.org/article/da6dff296166424083502c4775cb74f32021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11963https://doaj.org/toc/2283-9216Electrodialysis is an efficient process for the cleaning of industrial water effluent streams from toxic ionic substances with the simultaneous recovery of valuable ions for reuse. Energy consumption and waste recovery are the two key goals of the process. A dynamic optimisation program aims to determine the optimal operating conditions in terms of applied voltage and effluent flow rate in a batch operating scheme. A model is developed that accounts for the ion transfer through the ion selective membranes and the dynamics of the system. A combination of three objective functions targeting the minimisation of the overall batch process time, the minimisation of the electrical energy consumption required for the ion transfer, and the maximisation of the overall degree of separation is investigated. The manipulated variables applied voltage and feed stream flow rate are considered as piecewise constant during each time interval, spanning the duration of the entire batch. The dynamic optimisation problem is solved through standard non-linear programming techniques which calculate the optimal batch duration and condition profiles for the system. A multi-objective analysis is presented for various combinations of weight values for the joint objective function through the development of the Pareto optimal front. The current approach has been implemented in the removal and recovery of sulfuric anions from an aqueous solution and resulted in the achievement of a high degree of separation in a shorter period at a much lower energy consumption.Athanasios LatinisAthanasios I. PapadopoulosPanos SeferlisAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Athanasios Latinis Athanasios I. Papadopoulos Panos Seferlis Optimal Operational Profiles in an Electrodialysis Unit for Ion Recovery
description	Electrodialysis is an efficient process for the cleaning of industrial water effluent streams from toxic ionic substances with the simultaneous recovery of valuable ions for reuse. Energy consumption and waste recovery are the two key goals of the process. A dynamic optimisation program aims to determine the optimal operating conditions in terms of applied voltage and effluent flow rate in a batch operating scheme. A model is developed that accounts for the ion transfer through the ion selective membranes and the dynamics of the system. A combination of three objective functions targeting the minimisation of the overall batch process time, the minimisation of the electrical energy consumption required for the ion transfer, and the maximisation of the overall degree of separation is investigated. The manipulated variables applied voltage and feed stream flow rate are considered as piecewise constant during each time interval, spanning the duration of the entire batch. The dynamic optimisation problem is solved through standard non-linear programming techniques which calculate the optimal batch duration and condition profiles for the system. A multi-objective analysis is presented for various combinations of weight values for the joint objective function through the development of the Pareto optimal front. The current approach has been implemented in the removal and recovery of sulfuric anions from an aqueous solution and resulted in the achievement of a high degree of separation in a shorter period at a much lower energy consumption.
format	article
author	Athanasios Latinis Athanasios I. Papadopoulos Panos Seferlis
author_facet	Athanasios Latinis Athanasios I. Papadopoulos Panos Seferlis
author_sort	Athanasios Latinis
title	Optimal Operational Profiles in an Electrodialysis Unit for Ion Recovery
title_short	Optimal Operational Profiles in an Electrodialysis Unit for Ion Recovery
title_full	Optimal Operational Profiles in an Electrodialysis Unit for Ion Recovery
title_fullStr	Optimal Operational Profiles in an Electrodialysis Unit for Ion Recovery
title_full_unstemmed	Optimal Operational Profiles in an Electrodialysis Unit for Ion Recovery
title_sort	optimal operational profiles in an electrodialysis unit for ion recovery
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/da6dff296166424083502c4775cb74f3
work_keys_str_mv	AT athanasioslatinis optimaloperationalprofilesinanelectrodialysisunitforionrecovery AT athanasiosipapadopoulos optimaloperationalprofilesinanelectrodialysisunitforionrecovery AT panosseferlis optimaloperationalprofilesinanelectrodialysisunitforionrecovery
_version_	1718426873835290624

Optimal Operational Profiles in an Electrodialysis Unit for Ion Recovery

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