Influence of ageing on the structure and phosphate adsorption capacity of dewatered alum sludge
Files in This Item:
|36-ageing effects-UCD-F-Yang-CEJ-2008-0413.pdf||522.98 kB||Adobe PDF||Download|
|Title:||Influence of ageing on the structure and phosphate adsorption capacity of dewatered alum sludge||Authors:||Yang, Y.
|Permanent link:||http://hdl.handle.net/10197/3138||Date:||15-Dec-2008||Abstract:||In line with the increasing studies on the beneficial reuse of alum sludge from a “waste” into useful raw material, this paper reports an in-depth investigation of the effects of ageing time on the structure and the phosphate adsorption capacity of a dewatered alum sludge obtained from a local drinking water treatment plant in Ireland. During the ageing period from 0 day to up to 18 months, the adsorption capacity of the sludge varied from 21.4 to 23.9 mg-P g-1-sludge at pH 4.3, 14.3 to 14.9 mg-P g-1-sludge at pH 7.0 and 0.9 to 1.1 mg-P g-1-sludge at pH 9.0, respectively, indicating marginal effect of ageing time on such sludge's ability to adsorb phosphate. This result seems conflict with other studies reported in the literature. To reveal such, series of investigations including physicochemical characterization, morphological structure, BET surface area and porous structure of the aged sludge were carried out. All the results conclusively show that ageing time has insignificant effect on the structure and properties of the dewatered alum sludge and thus the phosphate adsorption capacity of the alum sludge remains insignificant change during the ageing.||Funding Details:||Other funder||Type of material:||Journal Article||Publisher:||Elsevier||Copyright (published version):||2008 Elsevier B.V.||Keywords:||Alum sludge;Adsorption;Phosphorus removal;Ageing time;Pore structure;Surface area||Subject LCSH:||Water treatment plant residuals
Phosphates--Absorption and adsorption
|DOI:||10.1016/j.cej.2008.04.026||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
Show full item record
Page view(s) 20140
This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.