Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/48078

TitleKinetic and equilibrium studies of phosphorous adsorption: Effect of physical and chemical properties of adsorption agent
Author(s)Oliveira, M.
Araujo, A.
Azevedo, G.
Pereira, M. F. R.
Neves, Isabel C.
Machado, A. V.
KeywordsPhosphorous
Wastewater
Kinetics
Adsorption composition
Issue date1-Sep-2015
PublisherElsevier Science BV
JournalEcological Engineering
Abstract(s)Several materials, with and without thermal treatment, were used as phosphorus removal agents. Surface area, porosity and chemical composition were determined for each material aiming to study their effect on phosphorus removal. While, calcined waste eggshell (ES) and natural crushed minerals (calcium (M1), iron (M2) and aluminum (M3)) were not sensible to pH variation, zeolites, USY and HY, exhibited a maximum removal above pH 4. Laboratory adsorption experiments (72 h of equilibrium at 22 degrees C and 200 rpm) using the different materials revealed a phosphorous removal ability of 26.48, 0.14, 0.14, 0.11, 0.12 and 0.10 mgP g(-1) for ES, USY, HY, M1, M2 and M3, respectively. The adsorption revealed to be chemical for USY and HY and physical for the remaining materials. ES demonstrated to efficiently reduce the phosphorus concentration present in wastewater.
TypeArticle
URIhttp://hdl.handle.net/1822/48078
DOI10.1016/j.ecoleng.2015.05.020
ISSN0925-8574
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDQuim - Artigos (Papers)

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