1. Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment (CRC CARE) Curtin University GPO Box U1987 WA 6845 Australia
2. School of Engineering Edith Cowan University 270 Joondalup Drive Joondalup WA 6027 Australia
3. Centre for Microscopy, Characterisation and Analysis The University of Western Australia Crawley WA 6009 Australia