title: Flaws in the design of Fe(0)-based filtration systems?
abstract: Use of metallic iron (Fe(0)) for water treatment has attracted much attention over the passed two decades. Achieved results have recalled that the formation of voluminous, low-soluble iron oxides and hydroxides within the system is ubiquitous at pH>4.0. These properties imply that efficiency and porosity of Fe(0)-based filtration systems will decrease in the long-term. Some methods have been suggested to solve the identified problems. However, they could be collectively regarded as weak because they are based on a false description of the system. This note reveals two major inherent flaws in the design of Fe(0)-based filters and shows ways to fix them.
authors: Angewandte Geologie, Universität Göttingen, Goldschmidtstraße 3, D-37077 Göttingen, Germany; Kultur und Nachhaltige Entwicklung CDD e.V., Postfach 1502, D-37005 Göttingen, Germany; Comité Afro-européen, Avenue Léopold II, 41, 5000 Namur, Belgium. Electronic address: cnoubac@gwdg.de.
authors: Chicgoua
authors: C
authors: Noubactep
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry; D005374:Filtration / Q000379:methods*; D007501:Iron / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D005290:Ferric Compounds; D014874:Water Pollutants, Chemical; C000499:ferric oxide; D007501:Iron
keywords: Packed-bed filtration; Paradigm shift; Permeability loss; Removal process; Zero-valent iron