Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/14799

TitleRemoval of phosphorus from water using active barriers : Al2O3 immobilized on to polyolefins
Author(s)Oliveira, M.
Ribeiro, Daniel
Nóbrega, J. M.
Machado, A. V.
Brito, A. G.
Nogueira, R.
KeywordsEutrophication
Phosphorus removal
Polyolefin
Aluminium oxide
Issue date2011
PublisherTaylor & Francis
JournalEnvironmental Technology
Abstract(s)Phosphorus is known to contribute to eutrophication of fresh water systems, as generally it is the limiting nutrient controlling algae growth. Laboratory studies were conducted to develop and test active barriers composed of aluminium oxide immobilized on to polyolefins to remove phosphorus from water. For this purpose, flat plates of polyethylene and polyethylene grafted with maleic anhydride were prepared and tested. The adsorption mechanism of phosphorus on to aluminium oxide was described by the Freundlich isotherm. The optimum pH interval for phosphorus removal was between 5.2 and 7.8, which includes the pH of natural waters. The maximum phosphorus removal capacity was around 11.1 ì g/cm 2 for both active barriers. Both barriers removed more than 90% of phosphorus from a 100 ì g/L solution in a static batch experiment carried out for 90 d. The in situ implementation of the active barriers developed in the present study might be a valuable strategy to sequester phosphate and thus to control eutrophication in natural ecosystems, though further work is required to evaluate possible interferences coming from other substances present in the water.
TypeArticle
URIhttp://hdl.handle.net/1822/14799
DOI10.1080/09593330.2010.522597
ISSN0959-3330
1479-487X
Publisher versionhttp://dx.doi.org/10.1080/09593330.2010.522597
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series
IPC - Artigos em revistas científicas internacionais com arbitragem

Files in This Item:
File Description SizeFormat 
Removal of phosphorus from water using active barriers Al2O3 immobilized onto polyolefins.pdf
  Restricted access
Removal of phosphorus from water using active barriers: Al2O3 immobilized on to polyolefins188,93 kBAdobe PDFView/Open    Request a copy!

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID