Recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents

Abstract This manuscript presents new method of phosphorus recovery from aqueous solutions in a convenient form of readily-soluble phosphates using chitosan hydrogels. Non-modified chitosan hydrogel granules (CHs) and chitosan hydrogel granules crosslinked with epichlorohydrin (CHs-ECH) served as or...

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Autores principales:	Tomasz Jóźwiak, Agata Kowalkowska, Urszula Filipkowska, Joanna Struk-Sokołowska, Ludmila Bolozan, Luminita Gache, Marius Ilie
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/773a88ced5b1439cafb934eb0fc091ab
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spelling	oai:doaj.org-article:773a88ced5b1439cafb934eb0fc091ab2021-12-02T16:45:47ZRecovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents10.1038/s41598-021-96416-22045-2322https://doaj.org/article/773a88ced5b1439cafb934eb0fc091ab2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96416-2https://doaj.org/toc/2045-2322Abstract This manuscript presents new method of phosphorus recovery from aqueous solutions in a convenient form of readily-soluble phosphates using chitosan hydrogels. Non-modified chitosan hydrogel granules (CHs) and chitosan hydrogel granules crosslinked with epichlorohydrin (CHs-ECH) served as orthophosphate ion carriers. The developed method was based on cyclic sorption/desorption of orthophosphates, with desorption performed in each cycle to the same solution (the concentrate). The concentrations of orthophosphates obtained in the concentrates depended on, i.a., sorbent type, sorption pH, source solution concentration, and desorption pH. Phosphorus concentrations in the concentrates were even 30 times higher than these in the source solutions. The maximum concentrate concentrations reached 332.0 mg P-PO4/L for CHs and 971.6 mg P-PO4/L for CHs-ECH. The experimental series with CHs-ECH were characterized by higher concentrations of the obtained concentrate, however the concentrates were also more contaminated with Cl− and Na+ ions compared to series with CHs. The high content of chlorine and sodium ions in the concentrates was also favored by the low pH of sorption (pH < 4) and very high pH of desorption (pH > 12) in the cycles. After concentrate evaporation, phosphorus content in the sediment ranged from 17.81 to 19.83% for CHs and from 16.04 to 17.74% for CHs-ECH.Tomasz JóźwiakAgata KowalkowskaUrszula FilipkowskaJoanna Struk-SokołowskaLudmila BolozanLuminita GacheMarius IlieNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tomasz Jóźwiak Agata Kowalkowska Urszula Filipkowska Joanna Struk-Sokołowska Ludmila Bolozan Luminita Gache Marius Ilie Recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents
description	Abstract This manuscript presents new method of phosphorus recovery from aqueous solutions in a convenient form of readily-soluble phosphates using chitosan hydrogels. Non-modified chitosan hydrogel granules (CHs) and chitosan hydrogel granules crosslinked with epichlorohydrin (CHs-ECH) served as orthophosphate ion carriers. The developed method was based on cyclic sorption/desorption of orthophosphates, with desorption performed in each cycle to the same solution (the concentrate). The concentrations of orthophosphates obtained in the concentrates depended on, i.a., sorbent type, sorption pH, source solution concentration, and desorption pH. Phosphorus concentrations in the concentrates were even 30 times higher than these in the source solutions. The maximum concentrate concentrations reached 332.0 mg P-PO4/L for CHs and 971.6 mg P-PO4/L for CHs-ECH. The experimental series with CHs-ECH were characterized by higher concentrations of the obtained concentrate, however the concentrates were also more contaminated with Cl− and Na+ ions compared to series with CHs. The high content of chlorine and sodium ions in the concentrates was also favored by the low pH of sorption (pH < 4) and very high pH of desorption (pH > 12) in the cycles. After concentrate evaporation, phosphorus content in the sediment ranged from 17.81 to 19.83% for CHs and from 16.04 to 17.74% for CHs-ECH.
format	article
author	Tomasz Jóźwiak Agata Kowalkowska Urszula Filipkowska Joanna Struk-Sokołowska Ludmila Bolozan Luminita Gache Marius Ilie
author_facet	Tomasz Jóźwiak Agata Kowalkowska Urszula Filipkowska Joanna Struk-Sokołowska Ludmila Bolozan Luminita Gache Marius Ilie
author_sort	Tomasz Jóźwiak
title	Recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents
title_short	Recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents
title_full	Recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents
title_fullStr	Recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents
title_full_unstemmed	Recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents
title_sort	recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/773a88ced5b1439cafb934eb0fc091ab
work_keys_str_mv	AT tomaszjozwiak recoveryofphosphorusassolublephosphatesfromaqueoussolutionsusingchitosanhydrogelsorbents AT agatakowalkowska recoveryofphosphorusassolublephosphatesfromaqueoussolutionsusingchitosanhydrogelsorbents AT urszulafilipkowska recoveryofphosphorusassolublephosphatesfromaqueoussolutionsusingchitosanhydrogelsorbents AT joannastruksokołowska recoveryofphosphorusassolublephosphatesfromaqueoussolutionsusingchitosanhydrogelsorbents AT ludmilabolozan recoveryofphosphorusassolublephosphatesfromaqueoussolutionsusingchitosanhydrogelsorbents AT luminitagache recoveryofphosphorusassolublephosphatesfromaqueoussolutionsusingchitosanhydrogelsorbents AT mariusilie recoveryofphosphorusassolublephosphatesfromaqueoussolutionsusingchitosanhydrogelsorbents
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Recovery of phosphorus as soluble phosphates from aqueous solutions using chitosan hydrogel sorbents

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