Role of particle size and composition in metal adsorption by solids deposited on urban road surfaces


Autoria(s): Gunawardana, Chandima; Egodawatta, Prasanna; Goonetilleke, Ashantha
Data(s)

01/01/2014

Resumo

Despite common knowledge that the metal content adsorbed by fine particles is relatively higher compared to coarser particles, the reasons for this phenomenon has gained little research attention. The research study discussed in the paper investigated the variations in metal content for different particle sizes of solids associated with pollutant build-up on urban road surfaces. Data analysis confirmed that parameters favourable for metal adsorption to solids such as specific surface area, organic carbon content, effective cation exchange capacity and clay forming minerals content decrease with the increase in particle size. Furthermore, the mineralogical composition of solids was found to be the governing factor influencing the specific surface area and effective cation exchange capacity. There is high quartz content in particles >150µm compared to particles <150µm. As particle size reduces below 150µm, the clay forming minerals content increases, providing favourable physical and chemical properties that influence adsorption.

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/63301/

Publicador

Elsevier

Relação

http://eprints.qut.edu.au/63301/1/Role_of_particle_size_and_composition_in_metal_adsorption_by_solids_deposited_on_urban_road_surfaces.pdf

DOI:10.1016/j.envpol.2013.08.010

Gunawardana, Chandima, Egodawatta, Prasanna, & Goonetilleke, Ashantha (2014) Role of particle size and composition in metal adsorption by solids deposited on urban road surfaces. Environmental Pollution, 184, pp. 44-53.

Direitos

Copyright 2013 Elsevier Ltd.

NOTICE: this is the author’s version of a work that was accepted for publication in Environmental Pollution. 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 Environmental Pollution, [Volume 184, (January 2014)] DOI: 10.1016/j.envpol.2013.08.010

Fonte

School of Earth, Environmental & Biological Sciences; Science & Engineering Faculty

Palavras-Chave #090500 CIVIL ENGINEERING #090508 Water Quality Engineering #effective cation exchange capacity #metal adsorption #mineralogy #pollutants build-up #specific surface area #stormwater pollutant processes #stormwater quality
Tipo

Journal Article