Journal article

Accumulation of heavy metals in stormwater bioretention media: A field study of temporal and spatial variation

Mohammed Al-Ameri, Belinda Hatt, Sebastien Le Coustumer, Tim Fletcher, Emily Payne, Ana Deletic



Short term studies have found that stormwater biofiltration systems, also known as bioretention systems or raingardens, are very effective in reducing heavy metal concentrations. However, their long-term treatment performance, as well as the spatial and temporal accumulation of metals within these systems remain uncertain. This paper reports on a large scale field study that assessed the changes over time of cadmium (Cd), copper (Cu), lead (Pb), and zinc (Zn) levels in biofilters varying in age, design, and catchment characteristics. The survey incorporated 29 biofilters in 2006/7 and 49 biofilters, in 2014/15, located in three major Australian cities (Melbourne, Brisbane, and Sydney). Notin..

View full abstract


Funding Acknowledgements

This work was undertaken as part of the Facility for Advancing Water Biofiltration's research program, funded by the Victorian Government's Science, Technology and Innovation grant scheme, Melbourne Water, and the Higher Committee for Education Development in Iraq (HCED). The authors thank Richard Williamson, Bonnie Glaister and Peter Poelsma from Monash University - Australia, and Justin Lewis from Melbourne Water for their assistance with the field work.