Journal article

A bio-reactive barrier sequence for petroleum hydrocarbon capture and degradation in low nutrient environments

Benjamin L Freidman, Sally L Gras, Ian Snape, Geoff W Stevens, Kathryn A Mumford



Sequenced permeable reactive barriers, containing materials for nutrient release and petroleum hydrocarbon adsorption, can promote biofilm formation and enhance biodegradation in low nutrient, cold environments. This study characterised the degree of biofilm formation and biodegradation of Antarctic diesel within laboratory scale permeable reactive barriers, containing ammonium exchanged zeolite for ammonium release onto a granular activated carbon bed. The adsorption of Antarctic diesel on the granular activated carbon bed resulted in low cell growth on the surface of the carbon, with biodegradation indices revealing limited access to and degradation of compounds adsorbed on the granular ac..

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Awarded by Australian Antarctic Science

Awarded by ARC Dairy Innovation Hub

Funding Acknowledgements

The authors acknowledge the financial support of Australian Antarctic Science Projects 4029 and 4036, as well as the Particulate Fluids Processing Centre (PFPC) at The University of Melbourne. We extend our thanks to Greg Hince and Lauren Wise at the Australian Antarctic Division for processing the TPH data and Simon Crawford at The University of Melbourne for FESEM sample preparation. Sally Gras is supported by The ARC Dairy Innovation Hub (IH120100005).