Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water

The application and optimal operation of nanoparticle adsorbents in fixed-bed columns or industrial-scale water treatment applications are limited. This limitation is generally due to the tendency of nanoparticles to aggregate, the use of non-sustainable and inefficient polymeric resins as supportin...

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Autores principales:	Md Musfiqur Rahman, Islam Hafez, Mehdi Tajvidi, Aria Amirbahman
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cellulose nanofibrils iron oxide nanoparticles aerogel arsenic water treatment Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f61e5f058d6e4bf6ab56386e3f93620d
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spelling	oai:doaj.org-article:f61e5f058d6e4bf6ab56386e3f93620d2021-11-25T18:30:01ZHighly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water10.3390/nano111128182079-4991https://doaj.org/article/f61e5f058d6e4bf6ab56386e3f93620d2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2818https://doaj.org/toc/2079-4991The application and optimal operation of nanoparticle adsorbents in fixed-bed columns or industrial-scale water treatment applications are limited. This limitation is generally due to the tendency of nanoparticles to aggregate, the use of non-sustainable and inefficient polymeric resins as supporting materials in fixed-bed columns, or low adsorption capacity. In this study, magnesium-doped amorphous iron oxide nanoparticles (IONPs) were synthesized and immobilized on the surface of cellulose nanofibrils (CNFs) within a lightweight porous aerogel for arsenic removal from water. The IONPs had a specific surface area of 165 m<sup>2</sup> g<sup>−1</sup>. The IONP-containing CNF aerogels were stable in water and under constant agitation due to the induced crosslinking using an epichlorohydrin crosslinker. The adsorption kinetics showed that both As(III) and As(V) adsorption followed a pseudo second-order kinetic model, and the equilibrium adsorption isotherm was best fitted using the Langmuir model. The maximum adsorption capacities of CNF-IONP aerogel for As(III) and As(V) were 48 and 91 mg As g-IONP<sup>−1</sup>, respectively. The optimum IONP concentration in the aerogel was 12.5 wt.%, which resulted in a maximum arsenic removal, minimal mass loss, and negligible leaching of iron into water.Md Musfiqur RahmanIslam HafezMehdi TajvidiAria AmirbahmanMDPI AGarticlecellulose nanofibrilsiron oxide nanoparticlesaerogelarsenicwater treatmentChemistryQD1-999ENNanomaterials, Vol 11, Iss 2818, p 2818 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cellulose nanofibrils iron oxide nanoparticles aerogel arsenic water treatment Chemistry QD1-999
spellingShingle	cellulose nanofibrils iron oxide nanoparticles aerogel arsenic water treatment Chemistry QD1-999 Md Musfiqur Rahman Islam Hafez Mehdi Tajvidi Aria Amirbahman Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water
description	The application and optimal operation of nanoparticle adsorbents in fixed-bed columns or industrial-scale water treatment applications are limited. This limitation is generally due to the tendency of nanoparticles to aggregate, the use of non-sustainable and inefficient polymeric resins as supporting materials in fixed-bed columns, or low adsorption capacity. In this study, magnesium-doped amorphous iron oxide nanoparticles (IONPs) were synthesized and immobilized on the surface of cellulose nanofibrils (CNFs) within a lightweight porous aerogel for arsenic removal from water. The IONPs had a specific surface area of 165 m<sup>2</sup> g<sup>−1</sup>. The IONP-containing CNF aerogels were stable in water and under constant agitation due to the induced crosslinking using an epichlorohydrin crosslinker. The adsorption kinetics showed that both As(III) and As(V) adsorption followed a pseudo second-order kinetic model, and the equilibrium adsorption isotherm was best fitted using the Langmuir model. The maximum adsorption capacities of CNF-IONP aerogel for As(III) and As(V) were 48 and 91 mg As g-IONP<sup>−1</sup>, respectively. The optimum IONP concentration in the aerogel was 12.5 wt.%, which resulted in a maximum arsenic removal, minimal mass loss, and negligible leaching of iron into water.
format	article
author	Md Musfiqur Rahman Islam Hafez Mehdi Tajvidi Aria Amirbahman
author_facet	Md Musfiqur Rahman Islam Hafez Mehdi Tajvidi Aria Amirbahman
author_sort	Md Musfiqur Rahman
title	Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water
title_short	Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water
title_full	Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water
title_fullStr	Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water
title_full_unstemmed	Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water
title_sort	highly efficient iron oxide nanoparticles immobilized on cellulose nanofibril aerogels for arsenic removal from water
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f61e5f058d6e4bf6ab56386e3f93620d
work_keys_str_mv	AT mdmusfiqurrahman highlyefficientironoxidenanoparticlesimmobilizedoncellulosenanofibrilaerogelsforarsenicremovalfromwater AT islamhafez highlyefficientironoxidenanoparticlesimmobilizedoncellulosenanofibrilaerogelsforarsenicremovalfromwater AT mehditajvidi highlyefficientironoxidenanoparticlesimmobilizedoncellulosenanofibrilaerogelsforarsenicremovalfromwater AT ariaamirbahman highlyefficientironoxidenanoparticlesimmobilizedoncellulosenanofibrilaerogelsforarsenicremovalfromwater
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Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water

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