Gutenberg Open Science: Salt partitioning in cationic thermoresponsive hydrogels for model-seawater desalination

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-8750

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DC Field	Value	Language
dc.contributor.author	Jangizehi, Amir	-
dc.contributor.author	Seiffert, Sebastian	-
dc.date.accessioned	2023-02-02T10:57:18Z	-
dc.date.available	2023-02-02T10:57:18Z	-
dc.date.issued	2022	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/8766	-
dc.description.abstract	Charged hydrogels partially reject salt ions during swelling in a salt solution reservoir. This feature suggests applicability for the separation of salt ions from saline water for water desalination in a membrane-free forward osmosis process. In this work, model charged cationic and thermoresponsive hydrogels are prepared and their potential for desalination of model seawater containing both monovalent and divalent ions with concentrations of 0.11–3.5 wt% is investigated. The recovery of adsorbed water, after partial salt rejection, is achieved by heating the hydrogels. The salt rejection increases upon increase of the charge density of the hydrogels and diminishes by increase of the concentration of the salt solution. In addition, the salt rejection during deswelling of the hydrogels is in the opposite of the overall process target, adding another challenge on the efficiency of the approach. Besides the experimental results, equations based on the Donnan theory are derived to predict the salt rejection of hydrogels during swelling and deswelling processes. While the theoretical values deviate from the experimental ones, the theory predict the overall trend well. Both experimental and theoretical results confirm that this approach has considerable potential for the desalination of saline water at low concentrations such as brackish waters.	en_GB
dc.description.sponsorship	Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) – Projektnummer 491381577	de
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	540 Chemie	de_DE
dc.subject.ddc	540 Chemistry and allied sciences	en_GB
dc.title	Salt partitioning in cationic thermoresponsive hydrogels for model-seawater desalination	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-8750	-
jgu.type.contenttype	Scientific article	de
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 09 Chemie, Pharmazie u. Geowissensch.	de
jgu.organisation.number	7950	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Macromolecular chemistry and physics	de
jgu.journal.volume	233	de
jgu.journal.issue	17	de
jgu.pages.alternative	2200070	de
jgu.publisher.year	2022	-
jgu.publisher.name	John Wiley & Sons, Ltd	de
jgu.publisher.place	Weinheim	de
jgu.publisher.issn	1521-3935	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	540	de
jgu.publisher.doi	10.1002/macp.202200070	de
jgu.organisation.ror	https://ror.org/023b0x485	-
jgu.subject.dfg	Naturwissenschaften	de
Appears in collections:	DFG-491381577-H

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