Re-use of dewatered aluminium-coagulated water treatment residual to immobilize phosphorus : batch and column trials using a condensed phosphate

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Show simple item record Babatunde, A.O. Zhao, Y.Q. Yang, Y. Kearney, P. 2011-09-01T13:46:04Z 2011-09-01T13:46:04Z 2008 Elsevier B.V. en 2008-03-01
dc.identifier.citation Chemical Engineering Journal en
dc.identifier.issn 1385-8947
dc.description.abstract The aluminium content in dewatered aluminium-coagulated water treatment residual (DAC-WTR) can lead to a high phosphorus (P) removal capacity. Therefore, DAC-WTR has been used as adsorbent/soil amendment to remove P in several studies, focusing mostly on orthophosphates (ortho-P). This study is concerned with extending such reuse of DAC-WTR to remove P using a condensed phosphate as the model P source. Using a 48-hr equilibration time and a 1.18mm (mean particle size); (1) P removal was found to increase with increasing DAC-WTR dosage, but specific uptake of P per mass of DAC-WTR was decreased (2) A maximum adsorption capacity of 4.52mg-P/g of DAC-WTR was obtained at a pH of 4.0. In the continuous flow test, P removal efficiency decreased from 90 to 30% when loading was increased from 3.9 to 16.5g-P/m2.d. An average 45% removal efficiency was obtained after an intentional P loading surge. At the end of the continuous flow test, an operating removal capacity of 2.66 mg-P/g of DAC-WTR was determined which was 83.3% of the adsorption maxima obtained in the batch tests. There was no excessive loss of solids during the continuous flow test and aluminium content in the effluent remained below 0.1mg-Al3+/l. These results have demonstrated that dewatered DAC-WTR can further be used as a low-cost adsorbent media for condensed phosphate removal. en
dc.description.sponsorship Other funder en
dc.format.extent 328836 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Elsevier en
dc.relation.requires Architecture, Landscape & Civil Engineering Research Collection en
dc.relation.requires Critical Infrastructure Group Research Collection en
dc.relation.requires Urban Institute Ireland Research Collection en
dc.rights This is the author’s version of a work that was accepted for publication in Chemical Engineering Journal. 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 Chemical Engineering Journal, 136 (2-3): 108-115 DOI 10.1016/j.cej.2007.03.013. en
dc.subject Adsorption en
dc.subject Aluminium-coagulated water treatment residual en
dc.subject Condensed phosphate en
dc.subject Disposal en
dc.subject Reuse en
dc.subject Wastewater treatment en
dc.subject.lcsh Phosphorus--Absorption and adsorption en
dc.subject.lcsh Water treatment plant residuals en
dc.subject.lcsh Water--Purification--Phosphate removal en
dc.title Re-use of dewatered aluminium-coagulated water treatment residual to immobilize phosphorus : batch and column trials using a condensed phosphate en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions en
dc.status Peer reviewed en
dc.identifier.volume 136 en
dc.identifier.issue 2-3 en
dc.identifier.startpage 108 en
dc.identifier.endpage 115 en
dc.identifier.doi 10.1016/j.cej.2007.03.013
dc.neeo.contributor Babatunde|A.O.|aut| en
dc.neeo.contributor Zhao|Y.Q.|aut| en
dc.neeo.contributor Yang|Y.|aut| en
dc.neeo.contributor Kearney|P.|aut| en
dc.description.othersponsorship Environmental Protection Agency en
dc.description.admin ti, ke, -SB01/09/2011 en

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