Conditioning of aluminium-based water treatment sludge with Fenton’s reagent : effectiveness and optimising study to improve dewaterability

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Title: Conditioning of aluminium-based water treatment sludge with Fenton’s reagent : effectiveness and optimising study to improve dewaterability
Authors: Tony, Maha A.
Zhao, Y.Q.
Fu, J.F.
Tayeb, Aghareed M.
Permanent link: http://hdl.handle.net/10197/3140
Date: Jun-2008
Abstract: Alternative conditioning of aluminium-based drinking water treatment sludge using Fenton reagent (Fe2+/H2O2) was examined in this study. Focuses were placed on effectiveness and factors to affect such novel application of Fenton process. Experiments have demonstrated that considerable improvement of alum sludge dewaterability evaluated by capillary suction time (CST) can be obtained at the relative low concentrations of Fenton reagent. A Box-Behnken experimental design based on the response surface methodology was applied to evaluate the optimum of the influencing variables, i.e. iron concentration, hydrogen peroxide concentration and pH. The optimal values for Fe2+, H2O2, and pH are 21 mg g-1 DS-1(dry solids), 105 mg g-1 DS-1 and 6, respectively, at which the CST reduction efficiency of 48±3 % can be achieved, this agreed with that predicted by an established polynomial model in this study.
Funding Details: Not applicable
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2008 Elsevier B.V.
Keywords: Fenton reaction;Aluminium-based water treatment sludge;Conditioning;Optimization;Response surface methodology;Box-Behnken design
Subject LCSH: Fenton's reagent
Water treatment plant residuals
Sewage sludge--Conditioning
Response surfaces (Statistics)
DOI: 10.1016/j.chemosphere.2008.03.032
Language: en
Status of Item: Peer reviewed
Appears in Collections:Centre for Water Resources Research Collection
Urban Institute Ireland Research Collection
Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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