Magnetic adsorbents for selective removal of selenite from contaminated water. Issue 13 (2nd September 2019)

• Record Type: Journal Article
• Authors: Evans, Samuel F.; Ivancevic, Marko R.; Yan, Jiaqiang; Naskar, Amit K.; Levine, Alan M.; Lee, Richard J.; Tsouris, Costas; Paranthaman, M. Parans
• Is Part Of: Separation science and technology. Volume 54:Issue 13(2019)
• Page Start: 2138
• Page End: 2146
• Publication Date: 2019-09-02
• Subjects: Selenium removal -- tire derived carbon support -- iron oxide magnetic nanoparticles -- adsorbents -- water treatments; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2019.1617742
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: Novel meso- and microporous tire-derived carbon framework as a support for magnetic iron oxide nanoparticle adsorbents (MNA) that selectively adsorb selenite (Se(IV)) ions from contaminated water has been developed. Carbon-supported magnetic nanoparticle adsorbents (C-MNA) displayed higher adsorption values compared to MNA from 5 to 50 ppm selenite concentrations, maximizing at 48 ± 5 mg/g capacity with >99% Se removal at pH 3 and 5, and outperforms MNA at pH 7. These improvements will expand the range of water sources that can be treated, as well as easing adsorbent collection through magnetic separation.