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

Author(s)
Babatunde, A.O.  
Zhao, Y.Q.  
Burke, A.M.  
Morris, M.A.  
Hanrahan, J.P.  
Uri
http://hdl.handle.net/10197/3128
Date Issued
2009-10
Date Available
2011-08-30T13:31:36Z
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.
Sponsorship
Other funder
Other Sponsorship
Environmental Protection Agency
Type of Material
Journal Article
Publisher
Elsevier
Journal
Environmental Pollution
Volume
157
Issue
10
Start Page
2830
End Page
2836
Copyright (Published Version)
2009 Elsevier Ltd.
Subjects

Adsorption capacity

Engineered wetlands

Water treatment resid...

Phosphorus removal

Wastewater treatment

Subject – LCSH
Water treatment plant residuals
Phosphorus--Absorption and adsorption
Constructed wetlands
DOI
10.1016/j.envpol.2009.04.016
Web versions
http://dx.doi.org/10.1016/j.envpol.2009.04.016
Language
English
Status of Item
Peer reviewed
ISSN
0269-7491
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-sa/1.0/
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26-A.O.Babatunde-yzhao.pdf

Size

339.49 KB

Format

Adobe PDF

Checksum (MD5)

80f0270530852cac4f4a60033ce78c9e

Owning collection
Civil Engineering Research Collection
Mapped collections
Centre for Water Resources Research Collection•
Critical Infrastructure Group Research Collection•
Urban Institute Ireland Research Collection

Item descriptive metadata is released under a CC-0 (public domain) license: https://creativecommons.org/public-domain/cc0/.
All other content is subject to copyright.

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