
Overview
Background
Biography:
Associate Professor Steven Pratt is known internationally for his work on the development of polyhdroxyalkanoate (PHA) bioplastics, and their associated wood-fibre composites, and nationally for his delivery of training courses to environmental professionals.
He has authored over 150 scientific publications, with his major contribution to the field of environmental biotechnology being the invention of the TOGA® Sensor for examination and control of biotech/bioprocess systems.
He leads the ARC Industrial Transformation Training Centre for Bioplastics and Biocomposites at UQ, and has won awards for his outstanding contribution to supervision and enhancing the research supervision culture.
Research:
Assocaite Professor Pratt is a research and education leader in environmental engineering, known internationally for his work on the development of polyhdroxyalkanoate (PHA) bioplastics, and their associated wood-fibre composites, and nationally for his delivery of training courses to environmental professionals. His research is industrially relevant; he has published on models for effective industry-education partnerships.
He is now Director of the new ARC Industrial Transformation Training Centre in Bioplastics and Biocomposites. ARC Centre for Bioplastics and Biocomposites
Plastics are now ubiquitous in our lives, and the systems within our modern society could not function without these light weight, easily formable, strong, cheap, durable, and readily available materials. However, our success at engineering such useful materials has created a systemic problem, with more than 10 million tonnes of plastic leaking into the global environment annually. Urgent change is needed to address this ‘plastic crisis’, and biodegradable bioplastics, along with their natural fibre composites, will play a pivotal role in this transition to a more sustainable plastics economy. Already, we are witnessing unprecedented growth in the global bioplastics industry – the projected annual growth to 2030 is 16-30%, leading to an estimated global market value of US$40B. As the world transitions towards the integration of bioplastics into a more sustainable plastics economy, there is a real opportunity for Australia to transform our existing plastics industry. Australia is uniquely positioned to become a global leader in the emerging bioplastic and biocomposite industry this decade, supported by our abundance of the raw natural materials needed for their manufacture. The ARC Training Centre for Bioplastics and Biocomposites will capitalise on Australia’s abundant natural bioresources to drive advances in technology for the development of bioplastic and biocomposite products for the new bioeconomy.
Teaching and Learning:
Dr Pratt has taught a variety of courses in process engineering, including Environmental Systems Engineering, Wastewater Treatment, Clean Technology and Environmental Biotechnology.
Additionally, he has run the IWES Principles of Wastewater Treatment course, which has an intake of about 100 professionals each year.
Projects:
ARC ITTC for Bioplastics and Biocomposties.
Availability
- Professor Steven Pratt is:
- Available for supervision
- Media expert
Fields of research
Qualifications
- Bachelor (Honours) of Engineering, The University of Queensland
- Doctor of Philosophy, The University of Queensland
Research impacts
Steven has authored nearly 150 scientific papers on related topics, with his major contribution to the field of environmental biotechnology being the invention of the TOGA® Sensor for examination and control of biotech/bioprocess systems. Widespread interest in TOGA® led to an agreement between Massey University and Scion for the commercialisation of the technology.
Works
Search Professor Steven Pratt’s works on UQ eSpace
2011
Journal Article
Impact of operating history on mixed culture fermentation microbial ecology and product mixture
Lu, Y., Slater, F. R., Mohd-Zaki, Z., Pratt, S. and Batstone, D. J. (2011). Impact of operating history on mixed culture fermentation microbial ecology and product mixture. Water Science and Technology, 64 (3), 760-765. doi: 10.2166/wst.2011.699
2011
Journal Article
Luxury uptake of phosphorus by microalgae in full-scale waste stabilisation ponds
Powell, N., Shilton, A., Pratt, S. and Chisti, Y. (2011). Luxury uptake of phosphorus by microalgae in full-scale waste stabilisation ponds. Water Science and Technology, 63 (4), 704-709. doi: 10.2166/wst.2011.116
2011
Journal Article
Phosphate release from waste stabilisation pond sludge: significance and fate of polyphosphate
Powell, N., Shilton, A., Pratt, S. and Chisti, Y. (2011). Phosphate release from waste stabilisation pond sludge: significance and fate of polyphosphate. Water Science and Technology, 63 (8), 1689-1694. doi: 10.2166/wst.2011.336
2010
Journal Article
Development of membrane inlet mass spectrometry for examination of fermentation processes
Bastidas-Oyanedel, Juan-Rodrigo, Mohd-Zaki, Zuhaida, Pratt, Steven, Steyer, Jean-Philippe and Batstone, Damien J. (2010). Development of membrane inlet mass spectrometry for examination of fermentation processes. Talanta, 83 (2), 482-492. doi: 10.1016/j.talanta.2010.09.034
2010
Journal Article
Rapid quantification of intracellular PHA using infrared spectroscopy: An application in mixed cultures
Arcos-Hernandez, Mónica V., Gurieff, Nicholas, Pratt, Steven, Magnusson, Per, Werker, Alan, Vargas, Alejandro and Lant, Paul (2010). Rapid quantification of intracellular PHA using infrared spectroscopy: An application in mixed cultures. Journal of Biotechnology, 150 (3), 372-379. doi: 10.1016/j.jbiotec.2010.09.939
2010
Journal Article
Production of polyhydroxyalkanoates in open, mixed cultures from a waste sludge stream containing high levels of soluble organics, nitrogen and phosphorus
Morgan-Sagastume, Fernando, Karlsson, Anton, Johansson, Peter, Pratt, Steven, Boon, Nico, Lant, Paul and Werker, Alan (2010). Production of polyhydroxyalkanoates in open, mixed cultures from a waste sludge stream containing high levels of soluble organics, nitrogen and phosphorus. Water Research, 44 (18), 5196-5211. doi: 10.1016/j.watres.2010.06.043
2010
Conference Publication
Microbial community analysis during continuous fermentation of thermally hydrolysed waste activated sludge
Cirne, Dores G., Bond, Philip, Pratt, Steven, Lant, Paul and Batstone, Damien J. (2010). Microbial community analysis during continuous fermentation of thermally hydrolysed waste activated sludge. AD12: 12th World Congress on Anaerobic Digestion. Water and Energy for the World, Guadalajara, Mexico, 31 October - 4 November 2010. London, United Kingdom: International Water Association (IWA).
2010
Conference Publication
Impact of operating history on mixed culture fermentation microbial ecology and product mixture
Lu, Yang, Slater, F. R., Mohd-Zaki, Z., Pratt, S. and Batstone, D. J. (2010). Impact of operating history on mixed culture fermentation microbial ecology and product mixture. AD12: 12th World Congress on Anaerobic Digestion. Water and Energy for the World, Guadalajara, Jalisco, Mexico, 31 October - 4 November 2010. London, United Kingdom: International Water Association (IWA).
2010
Conference Publication
Novel direct accumulation of polyhydroxyalkanoates in waste activated sludge
Arcos-Hernandez, M. V., Lant, P. and Pratt, S. (2010). Novel direct accumulation of polyhydroxyalkanoates in waste activated sludge. ISBP 2010 International Symposium on Biopolymers, Stuttgart, Germany, October 3-7 2010.
2009
Journal Article
Towards a luxury uptake process via microalgae – Defining the polyphosphate dynamics
Powell, Nicola, Shilton, Andy, Chisti, Yusuf and Pratt, Steven (2009). Towards a luxury uptake process via microalgae – Defining the polyphosphate dynamics. Water Research, 43 (17), 4207-4213. doi: 10.1016/j.watres.2009.06.011
2009
Journal Article
Assessment of physical techniques to regenerate active slag filters removing phosphorus from wastewater
Pratt, C., Shilton, A., Haverkamp, R. G. and Pratt, S. (2009). Assessment of physical techniques to regenerate active slag filters removing phosphorus from wastewater. Water Research, 43 (2), 277-282. doi: 10.1016/j.watres.2008.10.020
2009
Conference Publication
The Potential for generating algae derived biofuels using coal seam gas water as the growth media
Pratt, Steven, Keymer, Philip, Lant, Paul and Keller, Jurg (2009). The Potential for generating algae derived biofuels using coal seam gas water as the growth media. Water & Industry 2009 Conference, Palmerston North, New Zealand, 30 November - 2 December. New Zealand: International Water Association.
2008
Journal Article
Factors influencing luxury uptake of phosphorus by microalgae in waste stabilization ponds
Powell, Nicola, Shilton, Andrew N., Pratt, Steven and Chisti, Yusuf (2008). Factors influencing luxury uptake of phosphorus by microalgae in waste stabilization ponds. Environmental Science & Technology, 42 (16), 5958-5962. doi: 10.1021/es703118s
2008
Journal Article
Enhanced biological phosphorus removal for high-strength wastewater with a low rbCOD:P ratio
Broughton, Alistair, Pratt, Steven and Shilton, Andy (2008). Enhanced biological phosphorus removal for high-strength wastewater with a low rbCOD:P ratio. Bioresource Technology, 99 (5917), 1236-1241. doi: 10.1016/j.biortech.2007.02.013
2007
Journal Article
Effects of Redox Potential and pH Changes on Phosphorus Retention by Melter Slag Filters Treating Wastewater
Pratt, C., Shilton, A., Pratt, S., Haverkamp, R. G. and Elmetri, I. (2007). Effects of Redox Potential and pH Changes on Phosphorus Retention by Melter Slag Filters Treating Wastewater. Environmental Science and Technology, 41 (18), 6585-6590. doi: 10.1021/es070914m
2007
Journal Article
Development and examination of a granular nitrogen-fixing wastewater treatment system
Pratt, Steven, Tan, Michael, Gapes, Daniel and Shilton, Andy (2007). Development and examination of a granular nitrogen-fixing wastewater treatment system. Process Biochemistry, 42 (5), 863-872. doi: 10.1016/j.procbio.2007.02.009
2007
Journal Article
Phosphorus Removal Mechanisms in Active Slag Filters Treating Waste Stabilization Pond Effluent
Pratt, Chris, Shilton, Andy, Pratt, Steven, Haverkamp, Richard G. and Bolan, Nanthi S. (2007). Phosphorus Removal Mechanisms in Active Slag Filters Treating Waste Stabilization Pond Effluent. Environmental Science and Technology, 41 (9), 3296-3301. doi: 10.1021/es062496b
2007
Conference Publication
Removal of manganese for drinking water by oxidation with potassium permanganate.
Hintze, M. and Pratt, S. (2007). Removal of manganese for drinking water by oxidation with potassium permanganate.. New Zealand Water & Wastes Association, Rotorua, New Zealand, September 18-21, 2007.
2007
Conference Publication
Factors affecting biological phosphorus removal in waste stabilisation ponds: statistical analysis
Powell, N., Shilton, A., Pratt, S., Chisti, Y. and Grigg, N. (2007). Factors affecting biological phosphorus removal in waste stabilisation ponds: statistical analysis. 7 th International IWA Conference on Waste Stabilisation Ponds, Bangkok, Thailand, 25th - 27th September 2006. IWA.
2007
Conference Publication
Investigation into methanol as a carbon source for denitrification in wastewater treatment
Brian, K., Pratt, S., Gapes, D. and Shilton, A. (2007). Investigation into methanol as a carbon source for denitrification in wastewater treatment. New Zealand Water and Waste Association, Rotorua, New Zealand, 18-21 September 2007.
Funding
Current funding
Past funding
Supervision
Availability
- Professor Steven Pratt is:
- Available for supervision
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Available projects
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PhD scholarships in Bioplastics
Scholarships available, up to $45,000 p.a. tax free
12-month industry placements
There is unprecedented growth in demand for bioderived and biodegradable materials. The new ARC Training Centre in Bioplastics and Biocomposites will capitalise on Australia’s abundant natural bioresources to drive advances in technology for the development of bioplastic and biocomposite products for the new bioeconomy. We are a collaboration between industry, The University of Queensland (UQ) and Queensland University of Technology (QUT). Our vision is to perform leading edge research and to develop industry-ready specialists to underpin Australia’s transition to a globally significant bioplastics and biocomposites industry.
Up to 3 scholarships are available for outstanding PhD candidates to work in a multidisciplinary research team, embedded in industry. PhD projects are available in each of the following themes: Bioresource transformation, Bioplastic manufacture, Bioplastics applications, Effecting change and sustainability assessment.
We have a critical focus on providing an exceptional PhD experience. We will deliver targeted training and development opportunities including: leadership, innovation, emotional intelligence, critical thinking and project management.
As a Centre student you will receive mentoring from academic and industry leaders, access internal funding opportunities, and gain real world experience through extensive industry placements.
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Green additives and fillers
ITTC for Bioplastics and Biocomposites - Fully funded PhD Scholarship of $35,000 pa (with potential for a top up of $10,000 pa for outstanding students). Applicants with skills/experience in chemistry, chemical engineering, material science or material processing are encouraged to apply.
There is booming demand for eco-materials, based on biodegradation polymers. But commercially relevant bioplastics are much more than the biopolymers upon which they are based.
This project considers the impact of additives and fillers on degradation rates of bioplastics (and the mobilisation of those additives and fillers to the environment) – with the aim of developing alternative ‘green’ fillers and additives.
This project is developed in partnership with the Minderoo Foundation, with the view to facilitating the transition to a ‘greener’ plastics future.
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Sustainable bioplastics
ITTC for Bioplastics and Biocomposites - Fully funded PhD Scholarship of $35,000 pa (with potential for a top up of $10,000 pa for outstanding students). Applicants with skills/experience in chemistry, chemical engineering, material science or material processing are encouraged to apply.
Bioplastics are forecast to play an increasingly important role in addressing the plastic pollution problem. However, not all bioplastics are necessarily benign – even biodegradable bioplastics.
The aims of this project are to develop commercially relevant bioplastic products from polyhydroxyalkanoate (PHA) and to understand the (bio)degradation and potential impacts of those bioplastics in various environments.
The project is developed in partnership with the Minderoo Foundation, with the view to facilitating production of environmentally benign alternatives to conventional packaging materials.
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Sustainable bioplastics
Bioplastics are forecast to play an increasingly important role in addressing the plastic pollution problem. However, not all bioplastics are necessarily benign – even biodegradable bioplastics.
This project facilitates bringing PHA bioplastics, which are bioderived and truly biodegradable, to market.
Contact me for further info.
Supervision history
Current supervision
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Doctor Philosophy
Green additives and fillers for environmentally benign biocomposites
Principal Advisor
Other advisors: Professor Bronwyn Laycock, Professor Paul Lant, Dr Clement Chan
-
Doctor Philosophy
PHA in the Circular Economy
Principal Advisor
Other advisors: Professor Bronwyn Laycock, Professor Paul Lant, Dr Celine Chaleat
-
Doctor Philosophy
Understanding the extensional rheology of biodegradable polymers: A study for enhancing film blowing of polyhydroxyalkanoates (PHAs)
Principal Advisor
Other advisors: Professor Bronwyn Laycock, Professor Paul Lant
-
Doctor Philosophy
PHA materials development
Principal Advisor
Other advisors: Professor Bronwyn Laycock, Professor Paul Lant
-
Doctor Philosophy
Fermentation process for the synthesis and anaerobic degradation of polyhydroxyalkanoates
Associate Advisor
Other advisors: Dr Clement Chan, Professor Bronwyn Laycock
-
Doctor Philosophy
Lifetimes of bioplastics in natural and engineered environments
Associate Advisor
Other advisors: Professor Bronwyn Laycock, Dr Clement Chan, Professor Paul Lant
-
Doctor Philosophy
Fermentation process for the synthesis and anaerobic degradation of polyhydroxyalkanoates
Associate Advisor
Other advisors: Dr Clement Chan, Professor Bronwyn Laycock
-
Doctor Philosophy
Development of sustainable biodegradable products based on PHA
Associate Advisor
Other advisors: Professor Paul Lant, Dr Celine Chaleat, Professor Bronwyn Laycock
-
Doctor Philosophy
Novel PHA based materials
Associate Advisor
Other advisors: Professor Paul Lant, Dr Ian Levett, Professor Bronwyn Laycock
-
Doctor Philosophy
Novel halophilic biotechnology for PHA production from sugar
Associate Advisor
Other advisors: Dr Lisa Bai, Dr Ian Levett, Associate Professor Adrian Oehmen
-
Doctor Philosophy
Advanced bioplastic materials for a sustainable plastics future
Associate Advisor
Other advisors: Professor Bronwyn Laycock, Professor Paul Lant
-
Doctor Philosophy
Degradation of biodegradable plastics in aquatic environments
Associate Advisor
Other advisors: Professor Paul Lant, Dr Clement Chan, Professor Bronwyn Laycock
-
Doctor Philosophy
Biopolymer production from syngas and carbon dioxide/hydrogen by purple phototrophic bacteria
Associate Advisor
Other advisors: Professor Bronwyn Laycock, Professor Damien Batstone
-
Doctor Philosophy
Rapid Switch for Plastics: Transitioning to a Zero-Waste Future
Associate Advisor
Other advisors: Professor Paul Lant, Dr Clement Chan, Professor Bronwyn Laycock
Completed supervision
-
2022
Doctor Philosophy
Liquid organic hydrogen carriers and their application on transfer hydrogenation and activation of metal-based catalysts
Principal Advisor
Other advisors: Professor Bronwyn Laycock, Dr Muxina Konarova
-
2019
Doctor Philosophy
Biosynthesis of Polyhydroxyalkanoates (PHAs) in Methane-utilizing Mixed Cultures
Principal Advisor
Other advisors: Professor Bronwyn Laycock, Professor Paul Lant
-
2016
Master Philosophy
Biological silicon removal from coal seam gas water
Principal Advisor
Other advisors: Professor Liu Ye
-
2016
Master Philosophy
Silica characterization in coal seam gas water and its removal by activated alumina
Principal Advisor
Other advisors: Associate Professor Greg Birkett
-
2016
Doctor Philosophy
Composition of Mixed Culture PHA Biopolymers and Implications for Downstream Processing
Principal Advisor
Other advisors: Professor Bronwyn Laycock, Professor Peter Halley
-
2015
Doctor Philosophy
Management of waste microalgae harvested from iodine rich groundwater holding ponds
Principal Advisor
Other advisors: Professor William Clarke
-
2015
Doctor Philosophy
Enhancing algal biomass and biofuels recovery from open culture systems
Principal Advisor
Other advisors: Professor Paul Lant
-
2014
Doctor Philosophy
Polyhydroxyalkanoates (PHAs) from microbial subpopulations in mixed cultures
Principal Advisor
Other advisors: Professor Bronwyn Laycock
-
2013
Doctor Philosophy
Enhancing biomass production and energy recovery in algal systems
Principal Advisor
Other advisors: Professor Paul Lant
-
2025
Doctor Philosophy
Fermentation process for the synthesis and anaerobic degradation of polyhydroxyalkanoates
Associate Advisor
Other advisors: Dr Clement Chan, Professor Bronwyn Laycock
-
2023
Doctor Philosophy
Colloidal silica and silica-rich nanoparticles in reverse osmosis treatment of coal seam gas associated water: occurrence, evolution and speciation
Associate Advisor
Other advisors: Associate Professor Greg Birkett
-
2023
Doctor Philosophy
Chemical Synthesis and Characterization of High Molecular Weight Polyhydroxyalkanoate-b-Polyhydroxyalkanoate Block Copolymers
Associate Advisor
Other advisors: Dr Clement Chan, Professor Bronwyn Laycock
-
2021
Doctor Philosophy
Freshwater Anammox bacteria for treatment of saline wastewater
Associate Advisor
Other advisors: Professor Liu Ye
-
2021
Master Philosophy
Drivers and Barriers in the Deployment of Lignocellulose waste-derived liquid fuel in Australia
Associate Advisor
Other advisors: Dr Joe Lane, Dr Luigi Vandi, Professor Bronwyn Laycock
-
2020
Doctor Philosophy
Understanding the mechanisms that control the release of a soluble crystalline agrichemical extruded with biopolymers
Associate Advisor
Other advisors: Professor Bronwyn Laycock
-
2020
Doctor Philosophy
Development of Novel Polyhydroxyalkanoate Materials
Associate Advisor
Other advisors: Professor Paul Lant, Professor Bronwyn Laycock
-
2020
Doctor Philosophy
Exploring the Role of Biodegradable Plastics
Associate Advisor
Other advisors: Professor Paul Lant, Professor Bronwyn Laycock
-
2019
Doctor Philosophy
Development of a closed loop microalgal oil production system through anaerobic digestion and nutrient recycling
Associate Advisor
Other advisors: Associate Professor Paul Jensen
-
2019
Doctor Philosophy
Development of Bio-derived and Biodegradable Polyhydroxyalkanoate (PHA)-based Wood Plastic Composites (WPCs)
Associate Advisor
Other advisors: Professor Peter Halley, Dr Luigi Vandi, Professor Bronwyn Laycock
-
2016
Doctor Philosophy
Process Design and Development of Microalgae Pilot Scale Production Systems
Associate Advisor
-
2016
Doctor Philosophy
Regulation of Mixed Culture Fermentation
Associate Advisor
Other advisors: Professor Damien Batstone
-
2015
Doctor Philosophy
Low-cost microalgae harvesting and dewatering using geotextiles, hydrate separation technology and solar drying
Associate Advisor
-
2015
Doctor Philosophy
Enhancement of microalgae lipid extraction efficiency for biodiesel production
Associate Advisor
-
2013
Doctor Philosophy
Production and characterisation of mixed culture polyhydroxyalkanoates
Associate Advisor
Other advisors: Professor Paul Lant
Media
Enquiries
Contact Professor Steven Pratt directly for media enquiries about:
- biomaterials
- bioplastics
- wastewater
- water
- wood plastic composites
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