Phosphates Recovery from Iron Phosphates Sludge

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 2001 English Publisher:Informa UK LimitedJournal:Environmental Technology, volume 22, pages 1,295-1,301 (issn: 0959-3330, eissn: 1479-487X,

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Authors: J. Suschka; A. Machnicka; S. Poplawski;

doi: 10.1080/09593330409355432

pmid: 11804351

Phosphates Recovery from Iron Phosphates Sludge

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Abstract

Recovery of phosphates from ferrous and/or ferric residues as a result of chemical precipitation was investigated. The product of biological reduction of sulphates--sulphides and free hydrogen sulphide--can react with iron ions forming ferrous sulphide which are less soluble then ferrous phosphates, releasing phosphates into solution. Laboratory scale experiments have confirmed the possibility of phosphates recovery. It was found that strict anaerobic conditions are required and that the process is COD/S ratio dependent.

Related Organizations

University of Łódź
Poland
Lodz University of Technology
Poland

Keywords

Models, Chemical, Sewage, Chemical Precipitation, Ferrous Compounds, Phosphates

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