Mesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal

Due to the existence-threatening risk to aquatic life and entire ecosystems, the removal of oxyanions such as sulfate and phosphate from anthropogenic wastewaters, such as municipal effluents and acid mine drainage, is inevitable. Furthermore, phosphorus is an indispensable resource for worldwide pl...

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Autores principales:	Konstantin B. L. Borchert, Christine Steinbach, Berthold Reis, Niklas Gerlach, Philipp Zimmermann, Simona Schwarz, Dana Schwarz
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	porous resin particles sorption oxyanion removal melamine–formaldehyde resin hard templating silica Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/5c3b53e49a7848f1a9d46d011efdfde2
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spelling	oai:doaj.org-article:5c3b53e49a7848f1a9d46d011efdfde22021-11-11T18:35:13ZMesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal10.3390/molecules262166151420-3049https://doaj.org/article/5c3b53e49a7848f1a9d46d011efdfde22021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6615https://doaj.org/toc/1420-3049Due to the existence-threatening risk to aquatic life and entire ecosystems, the removal of oxyanions such as sulfate and phosphate from anthropogenic wastewaters, such as municipal effluents and acid mine drainage, is inevitable. Furthermore, phosphorus is an indispensable resource for worldwide plant fertilization, which cannot be replaced by any other substance. This raises phosphate to one of the most important mineral resources worldwide. Thus, efficient recovery of phosphate is essential for ecosystems and the economy. To face the harsh acidic conditions, such as for acid mine drainage, an adsorber material with a high chemical resistivity is beneficial. Poly(melamine-<i>co</i>-formaldehyde) (PMF) sustains these conditions whilst its very high amount of nitrogen functionalities (up to 53.7 wt.%) act as efficient adsorption sides. To increase adsorption capacities, PMF was synthesized in the form of mesoporous particles using a hard-templating approach yielding specific surface areas up to 409 m<sup>2</sup>/g. Different amounts of silica nanospheres were utilized as template and evaluated for the adsorption of sulfate and phosphate ions. The adsorption isotherms were validated by the Langmuir model. Due to their properties, the PMF particles possessed outperforming maximum adsorption capacities of 341 and 251 mg/g for phosphate and sulfate, respectively. Furthermore, selective adsorption of sulfate from mixed solutions of phosphate and sulfate was found for silica/PMF hybrid particles.Konstantin B. L. BorchertChristine SteinbachBerthold ReisNiklas GerlachPhilipp ZimmermannSimona SchwarzDana SchwarzMDPI AGarticleporous resin particlessorptionoxyanion removalmelamine–formaldehyde resinhard templatingsilicaOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6615, p 6615 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	porous resin particles sorption oxyanion removal melamine–formaldehyde resin hard templating silica Organic chemistry QD241-441
spellingShingle	porous resin particles sorption oxyanion removal melamine–formaldehyde resin hard templating silica Organic chemistry QD241-441 Konstantin B. L. Borchert Christine Steinbach Berthold Reis Niklas Gerlach Philipp Zimmermann Simona Schwarz Dana Schwarz Mesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal
description	Due to the existence-threatening risk to aquatic life and entire ecosystems, the removal of oxyanions such as sulfate and phosphate from anthropogenic wastewaters, such as municipal effluents and acid mine drainage, is inevitable. Furthermore, phosphorus is an indispensable resource for worldwide plant fertilization, which cannot be replaced by any other substance. This raises phosphate to one of the most important mineral resources worldwide. Thus, efficient recovery of phosphate is essential for ecosystems and the economy. To face the harsh acidic conditions, such as for acid mine drainage, an adsorber material with a high chemical resistivity is beneficial. Poly(melamine-<i>co</i>-formaldehyde) (PMF) sustains these conditions whilst its very high amount of nitrogen functionalities (up to 53.7 wt.%) act as efficient adsorption sides. To increase adsorption capacities, PMF was synthesized in the form of mesoporous particles using a hard-templating approach yielding specific surface areas up to 409 m<sup>2</sup>/g. Different amounts of silica nanospheres were utilized as template and evaluated for the adsorption of sulfate and phosphate ions. The adsorption isotherms were validated by the Langmuir model. Due to their properties, the PMF particles possessed outperforming maximum adsorption capacities of 341 and 251 mg/g for phosphate and sulfate, respectively. Furthermore, selective adsorption of sulfate from mixed solutions of phosphate and sulfate was found for silica/PMF hybrid particles.
format	article
author	Konstantin B. L. Borchert Christine Steinbach Berthold Reis Niklas Gerlach Philipp Zimmermann Simona Schwarz Dana Schwarz
author_facet	Konstantin B. L. Borchert Christine Steinbach Berthold Reis Niklas Gerlach Philipp Zimmermann Simona Schwarz Dana Schwarz
author_sort	Konstantin B. L. Borchert
title	Mesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal
title_short	Mesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal
title_full	Mesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal
title_fullStr	Mesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal
title_full_unstemmed	Mesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal
title_sort	mesoporous poly(melamine-<i>co</i>-formaldehyde) particles for efficient and selective phosphate and sulfate removal
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5c3b53e49a7848f1a9d46d011efdfde2
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Mesoporous Poly(melamine-<i>co</i>-formaldehyde) Particles for Efficient and Selective Phosphate and Sulfate Removal

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