Tony, Maha A.Maha A.TonyZhao, Y.Q.Y.Q.ZhaoFu, J.F.J.F.FuTayeb, Aghareed M.Aghareed M.Tayeb2011-08-312011-08-312008 Elsev2008-06Chemosphere0045-6535http://hdl.handle.net/10197/3140Alternative 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.421414 bytesapplication/pdfenThis is the author’s version of a work that was accepted for publication in Chemosphere. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemosphere, 72 (4): 673-677 DOI 10.1016/j.chemosphere.2008.03.032.Fenton reactionAluminium-based water treatment sludgeConditioningOptimizationResponse surface methodologyBox-Behnken designFenton's reagentWater treatment plant residualsSewage sludge--ConditioningResponse surfaces (Statistics)Journal Article72467367710.1016/j.chemosphere.2008.03.032https://creativecommons.org/licenses/by-nc-sa/1.0/