Build-up of toxic metals on the impervious surfaces of a commercial seaport

Ziyath, Abdul Mohamed, Egodawatta, Prasanna, & Goonetilleke, Ashantha (2016) Build-up of toxic metals on the impervious surfaces of a commercial seaport. Ecotoxicology and Environmental Safety, 127, pp. 193-198.

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Abstract

In the context of increasing threats to the sensitive marine ecosystem by toxic metals, this study investigated the metal build-up on impervious surfaces specific to commercial seaports. The knowledge generated in this study will contribute to managing toxic metal pollution of the marine ecosystem. The study found that inter-modal operations and main access roadway had the highest loads followed by container storage and vehicle marshalling sites, while the quay line and short term storage areas had the lowest. Additionally, it was found that Cr, Al, Pb, Cu and Zn were predominantly attached to solids, while significant amount of Cu, Pb and Zn were found as nutrient complexes. As such, treatment options based on solids retention can be effective for some metal species, while ineffective for other species. Furthermore, Cu and Zn are more likely to become bioavailable in seawater due to their strong association with nutrients. Mathematical models to replicate the metal build-up process were also developed using experimental design approach and partial least square regression. The models for Cr and Pb were found to be reliable, while those for Al, Zn and Cu were relatively less reliable, but could be employed for preliminary investigations.

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ID Code: 93593
Item Type: Journal Article
Refereed: Yes
Keywords: Marine ecosystem, Water quality modelling, Experimental Design, Stormwater pollutant processes, Stormwater quality
DOI: 10.1016/j.ecoenv.2016.01.027
ISSN: 0147-6513
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Water Quality Engineering (090508)
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2016 Elsevier Inc.
Copyright Statement: Licensed under the Creative Commons Attribution; Non-Commercial; No-Derivatives 4.0 International. DOI: 10.1016/j.ecoenv.2016.01.027
Deposited On: 10 Mar 2016 01:53
Last Modified: 15 Mar 2016 04:37

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