Arsenic sorption by Iron Based Sorbents (IBS)

• Type: Article in International Conference Proceedings Book
• Date: 2014

Authors

António Fiúza (Author) FEUP; Aurora Futuro Silva (Author) FEUP; Guimaraes, M (Author) Other

Conference proceedings International

Title: One Century of the Discovery of Arsenicosis in Latin America (1914-2014): As 2014

Pages: 657-661

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-009-TTV

Abstract (EN): Iron products have been used in the treatment of As in the groundwater, especially Zerovalent Iron (ZVI), Zerovalent Iron Nanoparticles (nZVI) and furnace slags. The potentialities of other iron based sorbents, such as oxides and hydroxides, commercially known as ARM 300 and GEH 102, have not been thoroughly examined. The behavior of these materials using laboratory studies at batch scale and in columns and their performance is compared with nZVI. A similar loading capacity was found for both sorbents: 20.6 g As kg-1 for GEH 102 and 20.8 g As kg-1 for ARM 300. The spatial distribution of As in the sorbent was analyzed using an electron microprobe that produced backscattered electron images and elemental mapping, evidencing that the deposition of As occurs on exposed surfaces and coincides with a net depletion in oxygen. © 2014 Taylor & Francis Group.

Language: English

Type (Professor's evaluation): Scientific