Novel nanostructured iron oxide cryogels for arsenic (As(III)) removal

Novel nanostructured iron oxide cryogels for arsenic (As(III)) removal Full article

Journal

Journal of Hazardous Materials
ISSN: 0304-3894

Output data

Year: 2020, Volume: 381, Article number : 120996, Pages count : 10 DOI: 10.1016/j.jhazmat.2019.120996

Tags

Iron oxide nanoparticles Adsorbent Arsenic Water remediation Polymer cryogel

Authors

Otero-González Lila ¹ , Mikhalovsky Sergey V. ^2,3 , Václavíková Miroslava ⁴ , Trenikhin Mikhail V. ⁵ , Cundy Andrew B. ¹ , Savina Irina N. ⁶

Affiliations

1	School of Environment & Technology, University of Brighton, Brighton BN2 4GJ, UK
2	ANAMAD Ltd, Sussex Innovation Centre Science Park Square, Falmer, Brighton BN1 9SB, UK
3	Chuiko Institute of Surface Chemistry, 17, General Naumov street, Kyiv, 03164, Ukraine
4	Institute of Geotechnics, Slovak Academy of Sciences, 040 01 Košice, Slovakia
5	Center of New Chemical Technologies of the Federal Research Center Boreskov, Institute of Catalysis of Siberian Branch of the Russian Academy of Sciences, Omsk
6	School of Pharmacy & Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK

Novel macroporous iron oxide nanocomposite cryogels were synthesized and assessed as arsenite (As(III)) adsorbents. The two-step synthesis method, by which a porous nanonetwork of iron oxide is firstly formed, allowed a homogeneous dispersion of the iron oxide in the cryogel reaction mixture, regardless of the nature of the copolymer forming the cryogel structure. The cryogels showed excellent mechanical properties, especially the acrylamide-based cryogel. This gel showed the highest As(III) adsorption capacity, with the maximum value estimated at 118 mg/g using the Langmuir model. The immobilization of the nanostructured iron oxide gel into the cryogel matrix resulted in slower adsorption kinetics, however the cryogels offer the advantage of a stable three-dimensional structure that impedes the release of the iron oxide nanoparticles into the treated effluent. A preliminary toxicity evaluation of the cryogels did not indicate any apparent inhibition of human hepatic cells activity, which together with their mechanical stability and high adsorption capacity for As(III) make them excellent materials for the development of nanoparticle based adsorption devices for drinking water treatment

Otero-González L. , Mikhalovsky S.V. , Václavíková M. , Trenikhin M.V. , Cundy A.B. , Savina I.N.
Novel nanostructured iron oxide cryogels for arsenic (As(III)) removal

Journal of Hazardous Materials. 2020. V.381. 120996 :1-10. DOI: 10.1016/j.jhazmat.2019.120996 WOS Scopus РИНЦ OpenAlex

Full text from publisher

Submitted:	Apr 12, 2019
Accepted:	Aug 10, 2019
Published online:	Aug 12, 2019
Published print:	Jan 1, 2020

Web of science:	WOS:000504778400067
Scopus:	2-s2.0-85070904872
Elibrary:	41640724
OpenAlex:	W2968285177

DB	Citing
Web of science	40
Scopus	50
OpenAlex	54