Repositorio UFRO · Omeka S

nZVI-Based Nanomaterials Used for Phosphate Removal from Aquatic Systems

Primer Autor	Suazo-Hernandez, Jonathan
Co-autores	Sepulveda, Pamela Caceres-Jensen, Lizethly Castro-Rojas, Jorge Poblete-Grant, Patricia Bolan, Nanthi Mora, Maria de la Luz
Título	nZVI-Based Nanomaterials Used for Phosphate Removal from Aquatic Systems
Editorial	MDPI
Revista	NANOMATERIALS
Lenguaje	en
Resumen	In the last decade, the application of nanoscale zero-valent iron (nZVI) has garnered great attention as an adsorbent due to its low cost, non-toxicity, high porosity, and BET-specific surface area. In particular, the immobilization of nZVI particles onto inorganic and organic substrates (nanocomposites) decreased its agglomeration, allowing them to be effective and achieve greater adsorption of pollutants than pristine nanoparticles (NPs). Although nZVI began to be used around 2004 to remove pollutants, there are no comprehensive review studies about phosphate removal from aquatic systems to date. For this reason, this study will show different types of nZVI, pristine nZVI, and its nanocomposites, that exist on the market, how factors such as pH solution, oxygen, temperature, doses of adsorbent, initial phosphate concentration, and interferents affect phosphate adsorption capacity, and mechanisms involved in phosphate removal. We determined that nanocomposites did not always have higher phosphate adsorption than pristine nZVI particles. Moreover, phosphate can be removed by nZVI-based nanoadsorbents through electrostatic attraction, ion exchange, chemisorption, reduction, complexation, hydrogen bonding, and precipitation mechanisms. Using the partition coefficient (PC) values, we found that sepiolite-nZVI is the most effective nanoadsorbent that exists to remove phosphate from aqueous systems. We suggest future studies need to quantify the PC values for nZVI-based nanoadsorbents as well as ought to investigate their phosphate removal efficiency under natural environmental conditions.
Fecha Publicación	2023
Tipo de Recurso	artículo de revisión
doi	10.3390/nano13030399
Formato Recurso	PDF
Palabras Claves	nanoscale zero-valent iron nanocomposites phosphorus adsorption aquatic environment
Ubicación del archivo	http://dx.doi.org/10.3390/nano13030399
Categoría OCDE	Química Ciencia y tecnología - Otros temas Ciencia de materiales Física
Materias	nanoescala del hierro de valencia cero nanocompuestos fósforo adsorción ambiente acuático
Identificador del recurso (Mandatado-único)	artículo de revisión
Versión del recurso (Recomendado-único)	versión publicada
License	CC BY 4.0
Condición de la licencia (Recomendado-repetible)	CC BY 4.0
Derechos de acceso	acceso abierto
Access Rights	acceso abierto
Id de Web of Science	WOS:000929506600001
Tipo de ruta	verde# dorado
Categoría WOS	Química Ciencia y tecnología - Otros temas Ciencia de materiales Física