| Babatunde, Akintunde, Zhao, Y. Q., Burke, A. M., Morris, M. A. and Hanrahan, J. P. 2009. Characterization of aluminium-based water treatment residual for potential phosphorus removal in engineered wetlands. Environmental Pollution 157 (10) , pp. 2830-2836. 10.1016/j.envpol.2009.04.016 |
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 potential phosphate-removing substrate in engineered wetlands. Results indicate specific surface area ranged from 28.0 m2 g−1 to 41.4 m2 g−1. X-ray Diffraction, Fourier transform infrared and energy-dispersive X-ray spectroscopes all indicate Al-WTR is mainly composed of amorphous aluminium which influences its phosphorus (P) adsorption capacity. The pH and electrical conductivity ranged from 5.9 to 6.0 and 0.104 dS m−1 to 0.140 dS m−1 respectively, showing that it should support plant growth. Batch tests showed adsorption maxima of 31.9 mg P g−1 and significant P removal was achieved in column tests. Overall, results showed that Al-WTR can be used for P removal in engineered wetlands and it carries the benefits of reuse of a by-product that promotes sustainability.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Engineering |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering |
| Uncontrolled Keywords: | Adsorption capacity; Engineered wetlands; Water treatment residual; Phosphorus removal; Wastewater treatment |
| Publisher: | Elsevier |
| ISSN: | 0269-7491 |
| Last Modified: | 04 Jun 2017 04:10 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/34015 |
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