One step preparation of ZnFe2O4/Zn5(OH)6(CO3)2 nanocomposite with improved As(V) removal capacity. Issue 10 (3rd July 2018)

• Record Type: Journal Article
• Authors: Tresintsi, S.; Kokkinos, E.; Kamou, A.; Simeonidis, K.; Kyriakou, G.; Zouboulis, A.; Mitrakas, M.
• Is Part Of: Separation science and technology. Volume 53:Issue 10(2018)
• Page Start: 1457
• Page End: 1464
• Publication Date: 2018-07-03
• Subjects: Hydrozincite -- zinc ferrite -- nanocomposite -- arsenate -- drinking water; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2017.1413390
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: Novel adsorbents consisting of ZnFe2 O4 /Zn5 (OH)6 (CO3 )2 (hydrozincite) nanocomposite materials were studied for efficient As(V) removal from water. Nanocomposites were synthesized by the co-precipitation of Zn and Fe salts in alkaline conditions. Depending on the Zn/Fe molar ratio, a variety of materials was produced with different ZnFe2 O4 /Zn5 (OH)6 (CO3 )2 contents. The adsorbent's efficiency for As(V) removal was enhanced proportionally to the percentage of Zn5 (OH)6 (CO3 )2 content. The nanocomposite with 74 ± 7 wt% of Zn5 (OH)6 (CO3 )2 provided a capacity of 18.4 μg As(V)/mg for residual concentration of 10 μg/L (pH 7) which is over twice that of an iron oxy-hydroxide prepared under similar conditions.