Adsorption and mobility of metals in build-up on road surfaces
| Data(s) |
01/01/2015
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|---|---|
| Resumo |
The study investigated the adsorption and bioavailability characteristics of traffic generated metals common to urban land uses, in road deposited solids particles. To validate the outcomes derived from the analysis of field samples, adsorption and desorption experiments were undertaken. The analysis of field samples revealed that metals are selectively adsorbed to different charge sites on solids. Zinc, copper, lead and nickel are adsorbed preferentially to oxides of manganese, iron and aluminium. Lead is adsorbed to organic matter through chemisorption. Cadmium and chromium form weak bonding through cation exchange with most of the particle sizes. Adsorption and desorption experiments revealed that at high metal concentrations, chromium, copper and lead form relatively strong bonds with solids particles while zinc is adsorbed through cation exchange with high likelihood of being released back into solution. Outcomes from this study provide specific guidance for the removal of metals from stormwater based on solids removal. |
| Formato |
application/pdf |
| Identificador | |
| Publicador |
Elsevier Ltd. |
| Relação |
http://eprints.qut.edu.au/79647/1/Adsorption%20and%20mobility%20of%20metals%20in%20build-up%20on%20road%20surfaces.pdf DOI:10.1016/j.chemosphere.2014.02.048 Gunawardana, Chandima, Egodawatta, Prasanna, & Goonetilleke, Ashantha (2015) Adsorption and mobility of metals in build-up on road surfaces. Chemosphere, 119, pp. 1391-1398. |
| Direitos |
Copyright 2014 Elsevier Ltd. NOTICE: this is the author’s version of a work that was accepted for publication in Chemosphere. 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 Chemosphere, Volume 119, (January 2015), DOI: 10.1016/j.chemosphere.2014.02.048 |
| Fonte |
School of Civil Engineering & Built Environment; School of Earth, Environmental & Biological Sciences; Science & Engineering Faculty |
| Palavras-Chave | #Desorption #Traffic generated metals #Stormwater quality #Stormwater pollutant processes |
| Tipo |
Journal Article |
