Characterization of aluminium-based water treatment residual for potential phosphorus removal in engineered wetlands

Files in This Item:
File Description SizeFormat 
26-A.O.Babatunde-yzhao.pdf339.49 kBAdobe PDFDownload
Title: Characterization of aluminium-based water treatment residual for potential phosphorus removal in engineered wetlands
Authors: Babatunde, A.O.
Zhao, Y.Q.
Burke, A.M.
Morris, M.A.
Hanrahan, J.P.
Permanent link:
Date: Oct-2009
Abstract: Aluminium-based water treatment residual (Al-WTR) is the most widely generated residual from water treatment facilities worldwide. It is regarded as a by-product of no reuse potential and landfilled. This study assessed Al-WTR as a potential phosphate-removing substrate in engineered wetlands for wastewater treatment. Results indicate the specific surface area ranged from 28.0 m2 g-1 to 41.4 m2 g-1 and this increased with increasing particle size. X-ray Diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and energy-dispersive X-ray spectroscopy all indicate that the Al-WTR is mainly composed of amorphous aluminium which influences its phosphorus (P) adsorption capacity. The pH and electrical conductivity ranged from 5.9 - 6.0 and 0.104 dS m-1 - 0.140 dS m-1 respectively, and both showed that it should suitably support plant growth. Batch tests showed a maximum P adsorption capacity of 31.9 mg-P g-1 and significant P removal was achieved in column tests. Overall, results showed that Al-WTR can be a low-cost, easily and locally available substrate for enhanced P removal in engineered wetlands and it carries the benefits of reuse of a by-product that promotes sustainability.
Funding Details: Other funder
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2009 Elsevier Ltd.
Keywords: Adsorption capacityEngineered wetlandsWater treatment residualPhosphorus removalWastewater treatment
Subject LCSH: Water treatment plant residuals
Phosphorus--Absorption and adsorption
Constructed wetlands
DOI: 10.1016/j.envpol.2009.04.016
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

Citations 1

Last Week
Last month
checked on Aug 17, 2018

Page view(s) 10

checked on May 25, 2018

Download(s) 5

checked on May 25, 2018

Google ScholarTM



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.