
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
2023
Journal Article
Synthesis and characterisation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-b-poly(3-hydroxybutyrate-co-3-hydroxyvalerate) multi-block copolymers produced using diisocyanate chemistry
Mai, Jingjing, Pratt, Steven, Laycock, Bronwyn and Chan, Clement Matthew (2023). Synthesis and characterisation of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-b-poly(3-hydroxybutyrate-co-3-hydroxyvalerate) multi-block copolymers produced using diisocyanate chemistry. Polymers, 15 (15) 3257. doi: 10.3390/polym15153257
2023
Other Outputs
Biodegradability of plastics: Discussion papers. A joint collaboration between Corrs Chambers Westgarth and The University of Queensland
Camenzuli, Louise, Syme, Rosie, Downie, Rachelle, McKinley, Belle, Chan, Jennifer, Lant, Paul, Laycock, Bronwyn, Pratt, Steven and Chan, Clement (2023). Biodegradability of plastics: Discussion papers. A joint collaboration between Corrs Chambers Westgarth and The University of Queensland. Brisbane, Australia: The University of Queensland. doi: 10.14264/20d45a9
2023
Journal Article
Understanding the reaction of hydroxy-terminated poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) random copolymers with a monoisocyanate
Mai, Jingjing, Chan, Clement Matthew, Laycock, Bronwyn and Pratt, Steven (2023). Understanding the reaction of hydroxy-terminated poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) random copolymers with a monoisocyanate. Macromolecules, 56 (6), 2328-2338. doi: 10.1021/acs.macromol.2c02513
2022
Journal Article
Effect of toxic phthalate-based plasticizer on the biodegradability of polyhydroxyalkanoate
Chan, Clement Matthew, Lyons, Rebecca, Dennis, Paul G., Lant, Paul, Pratt, Steven and Laycock, Bronwyn (2022). Effect of toxic phthalate-based plasticizer on the biodegradability of polyhydroxyalkanoate. Environmental Science andTechnology, 56 (24), 17732-17742. doi: 10.1021/acs.est.2c06583
2022
Journal Article
Utilisation of paunch waste as a natural fibre in biocomposites
Chan, Clement Matthew, Martin, Darren, Gauthier, Emilie, Jensen, Paul, Laycock, Bronwyn and Pratt, Steven (2022). Utilisation of paunch waste as a natural fibre in biocomposites. Polymers, 14 (18) 3704, 1-16. doi: 10.3390/polym14183704
2022
Journal Article
Tailored production of lignin-containing cellulose nanofibrils from sugarcane bagasse pretreated by acid-catalyzed alcohol solutions
Liu, Yiting, Li, Wen, Li, Kai, Annamalai, Pratheep Kumar, Pratt, Steven, Hassanpour, Morteza, Lu, Haiqin and Zhang, Zhanying (2022). Tailored production of lignin-containing cellulose nanofibrils from sugarcane bagasse pretreated by acid-catalyzed alcohol solutions. Carbohydrate Polymers, 291 119602, 119602. doi: 10.1016/j.carbpol.2022.119602
2022
Journal Article
Characterisation of end groups of hydroxy-functionalised scl-PHAs prepared by transesterification using ethylene glycol
Mai, Jingjing, Chan, Clement Matthew, Colwell, John, Pratt, Steven and Laycock, Bronwyn (2022). Characterisation of end groups of hydroxy-functionalised scl-PHAs prepared by transesterification using ethylene glycol. Polymer Degradation and Stability, 205 110123, 1-14. doi: 10.1016/j.polymdegradstab.2022.110123
2022
Book Chapter
Anaerobic fermentation technologies for the production of chemical building blocks and bio-based products from wastewater
Candry, Pieter, Carvajal-Arroyo, José Maria, Pratt, Steven, Sousa, João, Akyol, Çağri, Fatone, Francesco and Ganigué, Ramon (2022). Anaerobic fermentation technologies for the production of chemical building blocks and bio-based products from wastewater. Resource recovery from water: principles and application. (pp. 159-196) edited by lje Pikaar, Jeremy Guest, Ramon Ganigué, Paul Jensen, Korneel Rabaey, Thomas Seviour, John Trimmer, Olaf van der Kolk, Céline Vaneeckhaute and Willy Verstraete. Amsterdam, Netherlands: IWA Publishing. doi: 10.2166/9781780409566
2022
Journal Article
Screening two biodegradable polymers in enhanced efficiency fertiliser formulations reveals the need to prioritise performance goals
Redding, M. R., Witt, T., Lobsey, C. R., Mayer, D. G., Hunter, B., Pratt, S., Robinson, N., Schmidt, S., Laycock, B. and Phillips, I. (2022). Screening two biodegradable polymers in enhanced efficiency fertiliser formulations reveals the need to prioritise performance goals. Journal of Environmental Management, 304 114264, 114264. doi: 10.1016/j.jenvman.2021.114264
2022
Journal Article
Zeolite shape selectivity impact on LDPE and PP catalytic pyrolysis products and coke nature
Hasan, Md M., Batalha, Nuno, Fraga, Gabriel, Ahmed, Mohamed H. M., Pinard, L., Konarova, Muxina, Pratt, Steven and Laycock, Bronwyn (2022). Zeolite shape selectivity impact on LDPE and PP catalytic pyrolysis products and coke nature. Sustainable Energy and Fuels, 6 (6), 1587-1602. doi: 10.1039/d2se00146b
2022
Book Chapter
Effects of natural weathering on aesthetics, thermal and mechanical properties of completely biodegradable composites
Chan, Clement Matthew, Pratt, Steven and Laycock, Bronwyn (2022). Effects of natural weathering on aesthetics, thermal and mechanical properties of completely biodegradable composites. Aging effects on natural fiber-reinforced polymer composites: durability and life prediction. (pp. 173-188) edited by Chandrasekar Muthukumar, Senthilkumar Krishnasamy, Senthil Muthu Kumar Thiagamani and Suchart Siengchin. Singapore: Springer Singapore. doi: 10.1007/978-981-16-8360-2_10
2021
Journal Article
Adaptation and evolution of freshwater Anammox communities treating saline/brackish wastewater
Lin, Limin, Pratt, Steven, Li, Zhiheng and Ye, Liu (2021). Adaptation and evolution of freshwater Anammox communities treating saline/brackish wastewater. Water Research, 207 117815, 117815. doi: 10.1016/j.watres.2021.117815
2021
Journal Article
Osmotic shock pre-treatment of Chaetoceros muelleri wet biomass enhanced solvent-free lipid extraction and biogas production
Maria Gonzalez-Gonzalez, Lina, Astals, Sergi, Pratt, Steven, Jensen, Paul D. and Schenk, Peer M. (2021). Osmotic shock pre-treatment of Chaetoceros muelleri wet biomass enhanced solvent-free lipid extraction and biogas production. Algal Research-Biomass Biofuels and Bioproducts, 54 102177, 1-8. doi: 10.1016/j.algal.2020.102177
2021
Journal Article
High-resolution micro-computed tomography reveals cracking in a hydrophobic composite; a new mechanism for mobilisation in controlled release applications
Levett, Ian, Donose, Bogdan C., Laycock, Bronwyn and Pratt, Steven (2021). High-resolution micro-computed tomography reveals cracking in a hydrophobic composite; a new mechanism for mobilisation in controlled release applications. Biosystems Engineering, 203, 44-54. doi: 10.1016/j.biosystemseng.2020.12.001
2021
Journal Article
Role of catalyst support's physicochemical properties on catalytic transfer hydrogenation over palladium catalysts
Fraga, Gabriel, Santos, Mirella S., Konarova, Muxina, Hasan, M. D., Laycock, Bronwyn, Batalha, Nuno and Pratt, Steven (2021). Role of catalyst support's physicochemical properties on catalytic transfer hydrogenation over palladium catalysts. ChemCatChem, 13 (24), 5191-5202. doi: 10.1002/cctc.202101170
2021
Journal Article
Salinity effect on freshwater Anammox bacteria: ionic stress and ion composition
Lin, Limin, Pratt, Steven, Crick, Oliver, Xia, Jun, Duan, Haoran and Ye, Liu (2021). Salinity effect on freshwater Anammox bacteria: ionic stress and ion composition. Water Research, 188 116432, 1-10. doi: 10.1016/j.watres.2020.116432
2020
Journal Article
Can nitrogen source and nitrification inhibitors affect in-season nitrogen supply?
Redding, M.R., Phillips, I., Pratt, C., Paungfoo-Lonhienne, C., Levett, I., Hill, J., Mehta, C., Bailey, T., Brackin, R., McAuley, J., Pratt, S., Laycock, B. and Mayer, D.G. (2020). Can nitrogen source and nitrification inhibitors affect in-season nitrogen supply?. Communications in Soil Science and Plant Analysis, 51 (16), 2189-2204. doi: 10.1080/00103624.2020.1822383
2020
Journal Article
Hydrocarbon hydrogen carriers for catalytic transfer hydrogenation of guaiacol
Fraga, Gabriel, Yin, Yuling, Konarova, Muxina, Hasan, M. D., Laycock, Bronwyn, Yuan, Qinghong, Batalha, Nuno and Pratt, Steven (2020). Hydrocarbon hydrogen carriers for catalytic transfer hydrogenation of guaiacol. International Journal of Hydrogen Energy, 45 (51), 27381-27391. doi: 10.1016/j.ijhydene.2020.07.136
2020
Journal Article
Geo-agriculture: reviewing opportunities through which the geosphere can help address emerging crop production challenges
Pratt, Chris, Kingston, Kate, Laycock, Bronwyn, Levett, Ian and Pratt, Steven (2020). Geo-agriculture: reviewing opportunities through which the geosphere can help address emerging crop production challenges. Agronomy, 10 (7) 971, 1-26. doi: 10.3390/agronomy10070971
2020
Journal Article
Designing for effective controlled release in agricultural products: new insights into the complex nature of the polymer–active agent relationship and implications for use
Levett, Ian, Liao, Minjie, Pratt, Chris, Redding, Matthew, Laycock, Bronwyn and Pratt, Steven (2020). Designing for effective controlled release in agricultural products: new insights into the complex nature of the polymer–active agent relationship and implications for use. Journal of the Science of Food and Agriculture, 100 (13) jsfa.10531, 4723-4733. doi: 10.1002/jsfa.10531
Funding
Current funding
Past funding
Supervision
Availability
- Professor Steven Pratt is:
- Available for supervision
Before you email them, read our advice on how to contact a supervisor.
Available projects
-
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
-
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
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 in the Circular Economy
Principal Advisor
Other advisors: Professor Bronwyn Laycock, Professor Paul Lant, Dr Celine Chaleat
-
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
Biopolymer production from syngas and carbon dioxide/hydrogen by purple phototrophic bacteria
Associate Advisor
Other advisors: Professor Bronwyn Laycock, Professor Damien Batstone
-
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
Advanced bioplastic materials for a sustainable plastics future
Associate Advisor
Other advisors: Professor Bronwyn Laycock, Professor Paul Lant
-
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
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
Degradation of biodegradable plastics in aquatic environments
Associate Advisor
Other advisors: Professor Paul Lant, Dr Clement Chan, Professor Bronwyn Laycock
-
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
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
-
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
-
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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