The University of Queensland

Energy and metabolism

Ieropoulos, Ioannis A., Ledezma, Pablo, Scandroglio, Giacomo, Melhuish, Chris and Greenman, John (2018). Energy and metabolism. Living machines: a handbook of research in biomimetic and biohybrid systems. (pp. 62-72) edited by Tony J. Prescott, Nathan Lepora and Paul F.M.J Verschure. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/oso/9780199674923.003.0006

Fundamentals of microbial electrochemical systems

Freguia, Stefano, Guo, Kun and Ledezma, Pablo (2018). Fundamentals of microbial electrochemical systems. Functional electrodes for enzymatic and microbial electrochemical systems. (pp. 51-75) edited by Nicolas Brun and Victoria Flexer. London, United Kingdom : World Scientific Publishing. doi: 10.1142/9781786343543_0002

Resource recovery using enriched purple phototrophic bacteria in an outdoor flat plate photobioreactor: Suspended vs. attached growth

Capson-Tojo, Gabriel, Zuo Meng Gan, Albie, Ledezma, Pablo, Batstone, Damien J. and Hülsen, Tim (2023). Resource recovery using enriched purple phototrophic bacteria in an outdoor flat plate photobioreactor: Suspended vs. attached growth. Bioresource Technology, 373 128709, 1-5. doi: 10.1016/j.biortech.2023.128709

Modelling and techno-economic assessment of (bio)electrochemical nitrogen removal and recovery from reject water at full WWTP scale

Koskue, Veera, Pyrhönen, Veli-Pekka, Freguia, Stefano, Ledezma, Pablo and Kokko, Marika (2022). Modelling and techno-economic assessment of (bio)electrochemical nitrogen removal and recovery from reject water at full WWTP scale. Journal of Environmental Management, 319 115747, 1-10. doi: 10.1016/j.jenvman.2022.115747

Urea hydrolysis and long-term storage of source-separated urine for reuse as fertiliser is insufficient for the removal of anthropogenic micropollutants

Monetti, Juliette, Nieradzik, Ludwika, Freguia, Stefano, Choi, Phil M., O'Brien, Jake W., Thomas, Kevin V. and Ledezma, Pablo (2022). Urea hydrolysis and long-term storage of source-separated urine for reuse as fertiliser is insufficient for the removal of anthropogenic micropollutants. Water Research, 222 118891, 1-10. doi: 10.1016/j.watres.2022.118891

Electrochemical oxidation processes for PFAS removal from contaminated water and wastewater: fundamentals, gaps and opportunities towards practical implementation

Veciana, Mersabel, Bräunig, Jennifer, Farhat, Ali, Pype, Marie-Laure, Freguia, Stefano, Carvalho, Gilda, Keller, Jürg and Ledezma, Pablo (2022). Electrochemical oxidation processes for PFAS removal from contaminated water and wastewater: fundamentals, gaps and opportunities towards practical implementation. Journal of Hazardous Materials, 434 128886, 128886. doi: 10.1016/j.jhazmat.2022.128886

Fate of pharmaceuticals and PFASs during the electrochemical generation of a nitrogen-rich nutrient product from real reject water

Koskue, Veera, Monetti, Juliette, Rossi, Natascha, Nieradzik, Ludwika, Freguia, Stefano, Kokko, Marika and Ledezma, Pablo (2022). Fate of pharmaceuticals and PFASs during the electrochemical generation of a nitrogen-rich nutrient product from real reject water. Journal of Environmental Chemical Engineering, 10 (2) 107284, 107284. doi: 10.1016/j.jece.2022.107284

Optimised operational parameters for improved nutrient recovery from hydrolysed urine by bio-electroconcentration

Monetti, Juliette, Ledezma, Pablo and Freguia, Stefano (2021). Optimised operational parameters for improved nutrient recovery from hydrolysed urine by bio-electroconcentration. Separation and Purification Technology, 279 119793, 119793. doi: 10.1016/j.seppur.2021.119793

Electro-concentration of urine designed for separation of sodium from nitrogen

Jermakka, Johannes, Brewster, Emma Thompson, Freguia, Stefano, Ledezma, Pablo and Kokko, Marika (2021). Electro-concentration of urine designed for separation of sodium from nitrogen. Separation and Purification Technology, 276 119275, 119275. doi: 10.1016/j.seppur.2021.119275

Efficient nitrogen removal and recovery from real digested sewage sludge reject water through electroconcentration

Koskue, Veera, Freguia, Stefano, Ledezma, Pablo and Kokko, Marika (2021). Efficient nitrogen removal and recovery from real digested sewage sludge reject water through electroconcentration. Journal of Environmental Chemical Engineering, 9 (5) 106286, 106286. doi: 10.1016/j.jece.2021.106286

Implementation of a sulfide–air fuel cell coupled to a sulfate-reducing biocathode for elemental sulfur recovery

Blázquez, Enric, Gabriel, David, Baeza, Juan Antonio, Guisasola, Albert, Ledezma, Pablo and Freguia, Stefano (2021). Implementation of a sulfide–air fuel cell coupled to a sulfate-reducing biocathode for elemental sulfur recovery. International Journal of Environmental Research and Public Health, 18 (11) 5571, 1-11. doi: 10.3390/ijerph18115571

Optimising nitrogen recovery from reject water in a 3-chamber bioelectroconcentration cell

Koskue, Veera, Rinta-Kanto, Johanna M., Freguia, Stefano, Ledezma, Pablo and Kokko, Marika (2021). Optimising nitrogen recovery from reject water in a 3-chamber bioelectroconcentration cell. Separation and Purification Technology, 264 118428, 1-10. doi: 10.1016/j.seppur.2021.118428

Anodic electro-fermentation: empowering anaerobic production processes via anodic respiration

Vassilev, Igor, Averesch, Nils J.H., Ledezma, Pablo and Kokko, Marika (2021). Anodic electro-fermentation: empowering anaerobic production processes via anodic respiration. Biotechnology Advances, 48 107728, 1-13. doi: 10.1016/j.biotechadv.2021.107728

Selective extraction of medium-chain carboxylic acids by electrodialysis and phase separation

Hernandez, Paula Andrea, Zhou, Miaomiao, Vassilev, Igor, Freguia, Stefano, Zhang, Yang, Keller, Jürg, Ledezma, Pablo and Virdis, Bernardino (2021). Selective extraction of medium-chain carboxylic acids by electrodialysis and phase separation. ACS Omega, 6 (11), 7841-7850. doi: 10.1021/acsomega.1c00397

Extracellular electron transfer by Microcystis aeruginosa is solely driven by high pH

Vieira Lemos, Rita, Tsujimura, Seiya, Ledezma, Pablo, Tokunou, Yoshihide, Okamoto, Akihiro and Freguia, Stefano (2021). Extracellular electron transfer by Microcystis aeruginosa is solely driven by high pH. Bioelectrochemistry, 137 107637, 107637. doi: 10.1016/j.bioelechem.2020.107637

Synechococcus and other bloom-forming cyanobacteria exhibit unique redox signatures

Tokunou, Yoshihide, Vieira Lemos, Rita, Tsujimura, Seiya, Okamoto, Akihiro, Ledezma, Pablo and Freguia, Stefano (2021). Synechococcus and other bloom-forming cyanobacteria exhibit unique redox signatures. ChemElectroChem, 8 (2), 360-364. doi: 10.1002/celc.202001274

Electrochemical system for selective oxidation of organics over ammonia in urine

Jermakka, Johannes, Freguia, Stefano, Kokko, Marika and Ledezma, Pablo (2021). Electrochemical system for selective oxidation of organics over ammonia in urine. Environmental Science: Water Research and Technology, 7 (5), 942-955. doi: 10.1039/d0ew01057j

Towards in situ electro-generation of ferrate for drinking water treatment: a comparison of three low-cost sacrificial iron electrodes

Diaz, M., Doederer, K., Keller, J., Cataldo, M., Donose, B. C., Ali, Y. and Ledezma, P. (2021). Towards in situ electro-generation of ferrate for drinking water treatment: a comparison of three low-cost sacrificial iron electrodes. Journal of Electroanalytical Chemistry, 880 114897, 114897. doi: 10.1016/j.jelechem.2020.114897

Staged electrochemical treatment guided by modelling allows for targeted recovery of metals and rare earth elements from acid mine drainage

Brewster, Emma Thompson, Freguia, Stefano, Edraki, Mansour, Berry, Luke and Ledezma, Pablo (2020). Staged electrochemical treatment guided by modelling allows for targeted recovery of metals and rare earth elements from acid mine drainage. Journal of Environmental Management, 275 111266, 111266. doi: 10.1016/j.jenvman.2020.111266

Unravelling the mechanisms controlling the electro-generation of ferrate using four iron salts in boron-doped diamond electrodes

Diaz, M., Cataldo, M., Ledezma, P., Keller, J. and Doederer, K. (2019). Unravelling the mechanisms controlling the electro-generation of ferrate using four iron salts in boron-doped diamond electrodes. Journal of Electroanalytical Chemistry, 854 113501, 113501. doi: 10.1016/j.jelechem.2019.113501

Self-powered bioelectrochemical nutrient recovery for fertilizer generation from human urine

Freguia, Stefano, Logrieco, Maddalena E., Monetti, Juliette, Ledezma, Pablo, Virdis, Bernardino and Tsujimura, Seiya (2019). Self-powered bioelectrochemical nutrient recovery for fertilizer generation from human urine. Sustainability, 11 (19) 5490, 5490. doi: 10.3390/su11195490

Recovery of elemental sulfur with a novel integrated bioelectrochemical system with an electrochemical cell

Blázquez, Enric, Gabriel, David, Baeza, Juan Antonio, Guisasola, Albert, Freguia, Stefano and Ledezma, Pablo (2019). Recovery of elemental sulfur with a novel integrated bioelectrochemical system with an electrochemical cell. Science of The Total Environment, 677, 175-183. doi: 10.1016/j.scitotenv.2019.04.406

Nutrient recovery by bio-electroconcentration is limited by wastewater conductivity

Monetti, Juliette, Ledezma, Pablo, Virdis, Bernardino and Freguia, Stefano (2019). Nutrient recovery by bio-electroconcentration is limited by wastewater conductivity. ACS Omega, 4 (1), 2152-2159. doi: 10.1021/acsomega.8b02737

Microbial electrosynthesis system with dual biocathode arrangement for simultaneous acetogenesis, solventogenesis and carbon chain elongation

Vassilev, Igor, Kracke, Frauke, Freguia, Stefano, Keller, Jurg, Krömer, Jens O., Ledezma, Pablo and Virdis, Bernardino (2019). Microbial electrosynthesis system with dual biocathode arrangement for simultaneous acetogenesis, solventogenesis and carbon chain elongation. Chemical Communications, 55 (30), 4351-4354. doi: 10.1039/c9cc00208a

Microbial electrosynthesis of isobutyric, butyric, caproic acids, and corresponding alcohols from carbon dioxide

Vassilev, Igor, Hernandez, Paula A., Batlle-Vilanova, Pau, Freguia, Stefano, Krömer, Jens O., Keller, Jürg, Ledezma, Pablo and Virdis, Bernardino (2018). Microbial electrosynthesis of isobutyric, butyric, caproic acids, and corresponding alcohols from carbon dioxide. ACS Sustainable Chemistry and Engineering, 6 (7), 8485-8493. doi: 10.1021/acssuschemeng.8b00739

Electro-concentration for chemical-free nitrogen capture as solid ammonium bicarbonate

Jermakka, Johannes, Thompson Brewster, Emma, Ledezma, Pablo and Freguia, Stefano (2018). Electro-concentration for chemical-free nitrogen capture as solid ammonium bicarbonate. Separation and Purification Technology, 203, 48-55. doi: 10.1016/j.seppur.2018.04.023

Electroactive haloalkaliphiles exhibit exceptional tolerance to free ammonia

Ledezma, Pablo, Lu, Yang and Freguia, Stefano (2018). Electroactive haloalkaliphiles exhibit exceptional tolerance to free ammonia. FEMS microbiology letters, 365 (2) fnx260. doi: 10.1093/femsle/fnx260

A modelling approach to assess the long-term stability of a novel microbial/electrochemical system for the treatment of acid mine drainage

Thompson Brewster, Emma , Pozo, Guillermo, Batstone, Damien J., Freguia, Stefano and Ledezma, Pablo (2018). A modelling approach to assess the long-term stability of a novel microbial/electrochemical system for the treatment of acid mine drainage. RSC Advances, 8 (33), 18682-18689. doi: 10.1039/c8ra03153c

A novel bioelectrochemical system for chemical-free permanent treatment of acid mine drainage

Pozo, Guillermo, Pongy, Sebastien, Keller, Jürg, Ledezma, Pablo and Freguia, Stefano (2017). A novel bioelectrochemical system for chemical-free permanent treatment of acid mine drainage. Water Research, 126, 411-420. doi: 10.1016/j.watres.2017.09.058

Selective cathodic microbial biofilm retention allows a high current-to-sulfide efficiency in sulfate-reducing microbial electrolysis cells

Pozo, Guillermo, Lu, Yang, Pongy, Sebastien, Keller, Jurg, Ledezma, Pablo and Freguia, Stefano (2017). Selective cathodic microbial biofilm retention allows a high current-to-sulfide efficiency in sulfate-reducing microbial electrolysis cells. Bioelectrochemistry, 118, 62-69. doi: 10.1016/j.bioelechem.2017.07.001

Recovering nitrogen as a solid without chemical dosing: bio-electroconcentration for recovery of nutrients from urine

Ledezma, Pablo, Jermakka, Johannes, Keller, Jurg and Freguia, Stefano (2017). Recovering nitrogen as a solid without chemical dosing: bio-electroconcentration for recovery of nutrients from urine. Environmental Science and Technology Letters, 4 (3), 119-124. doi: 10.1021/acs.estlett.7b00024

Redox-polymers enable uninterrupted day/night photo-driven electricity generation in biophotovoltaic devices

Darus, Libertus, Sadakane, Takuya, Ledezma, Pablo, Tsujimura, Seiya, Osadebe, Isioma, Leech, Donal, Gorton, Lo and Freguia, Stefano (2017). Redox-polymers enable uninterrupted day/night photo-driven electricity generation in biophotovoltaic devices. Journal of the Electrochemical Society, 164 (3), 3037-3040. doi: 10.1149/2.0091703jes

Cathodic biofilm activates electrode surface and achieves efficient autotrophic sulfate reduction

Pozo, Guillermo, Jourdin, Ludovic, Lu, Yang, Keller, Jurg, Ledezma, Pablo and Freguia, Stefano (2016). Cathodic biofilm activates electrode surface and achieves efficient autotrophic sulfate reduction. Electrochimica Acta, 213, 66-74. doi: 10.1016/j.electacta.2016.07.100

Fully reversible current driven by a dual marine photosynthetic microbial community

Darus, Libertus, Lu, Yang, Ledezma, Pablo, Keller, Jurg and Freguia, Stefano (2015). Fully reversible current driven by a dual marine photosynthetic microbial community. Bioresource Technology, 195, 248-253. doi: 10.1016/j.biortech.2015.06.055

Methanobacterium enables high rate electricity-driven autotrophic sulfate reduction

Pozo, Guillermo, Jourdin, Ludovic, Lu, Yang, Ledezma, Pablo, Keller, Jurg and Freguia, Stefano (2015). Methanobacterium enables high rate electricity-driven autotrophic sulfate reduction. RSC Advances, 5 (109), 89368-89374. doi: 10.1039/C5RA18444D

Marine phototrophic consortia transfer electrons to electrodes in response to reductive stress

Darus, Libertus, Ledezma, Pablo, Keller, Jurg and Freguia, Stefano (2015). Marine phototrophic consortia transfer electrons to electrodes in response to reductive stress. Photosynthesis Research, 127 (3), 347-354. doi: 10.1007/s11120-015-0193-y

Source-separated urine opens golden opportunities for microbial electrochemical technologies

Ledezma, Pablo, Kuntke, Philipp, Buisman, Cees J. N., Keller, Jurg and Freguia, Stefano (2015). Source-separated urine opens golden opportunities for microbial electrochemical technologies. Trends in Biotechnology, 33 (4), 214-220. doi: 10.1016/j.tibtech.2015.01.007

Oxidised stainless steel: a very effective electrode material for microbial fuel cell bioanodes but at high risk of corrosion

Ledezma, Pablo, Donose, Bogdan C., Freguia, Stefano and Keller, Jurg (2015). Oxidised stainless steel: a very effective electrode material for microbial fuel cell bioanodes but at high risk of corrosion. Electrochimica Acta, 158, 356-360. doi: 10.1016/j.electacta.2015.01.175

Erratum: Methanobacterium enables high rate electricity-driven autotrophic sulfate reduction

Pozo, Guillermo, Jourdin, Ludovic, Lu, Yang, Ledezma, Pablo, Keller, Jurg and Freguia, Stefano (2015). Erratum: Methanobacterium enables high rate electricity-driven autotrophic sulfate reduction. RSC Advances, 5 (111), 91821-91821. doi: 10.1039/c5ra90096d

Oxygen suppresses light-driven anodic current generation by a mixed phototrophic culture

Darus, Libertus, Ledezma, Pablo, Keller, Jürg and Freguia, Stefano (2014). Oxygen suppresses light-driven anodic current generation by a mixed phototrophic culture. Environmental Science and Technology, 48 (23), 14000-14006. doi: 10.1021/es5024702

Dynamic polarisation reveals differential steady-state stabilisation and capacitive-like behaviour in microbial fuel cells

Ledezma, Pablo, Degrenne, Nicolas, Bevilacqua, Pascal, Buret, François, Allard, Bruno, Greenman, John and Ieropoulos, Ioannis (2014). Dynamic polarisation reveals differential steady-state stabilisation and capacitive-like behaviour in microbial fuel cells. Sustainable Energy Technologies and Assessments, 5, 1-6. doi: 10.1016/j.seta.2013.10.008

Waste to real energy: The first MFC powered mobile phone

Ieropoulos, Ioannis A., Ledezma, Pablo, Stinchcombe, Andrew, Papaharalabos, George, Melhuish, Chris and Greenman, John (2013). Waste to real energy: The first MFC powered mobile phone. Physical Chemistry Chemical Physics, 15 (37), 15312-15316. doi: 10.1039/c3cp52889h

The first self-sustainable microbial fuel cell stack

Ledezma, Pablo, Stinchcombe, Andrew, Greenman, John and Ieropoulos, Ioannis (2013). The first self-sustainable microbial fuel cell stack. Physical Chemistry Chemical Physics, 15 (7), 2278-2281. doi: 10.1039/c2cp44548d

Bi-directional electrical characterisation of microbial fuel cell

Degrenne, N., Ledezma, P., Bevilacqua, P., Buret, F., Allard, B., Greenman, J. and Ieropoulos, I. A. (2013). Bi-directional electrical characterisation of microbial fuel cell. Bioresource Technology, 128, 769-773. doi: 10.1016/j.biortech.2012.10.110

MFC-cascade stacks maximise COD reduction and avoid voltage reversal under adverse conditions

Ledezma, Pablo, Greenman, John and Ieropoulos, Ioannis (2013). MFC-cascade stacks maximise COD reduction and avoid voltage reversal under adverse conditions. Bioresource Technology, 134, 158-165. doi: 10.1016/j.biortech.2013.01.119

Maximising electricity production by controlling the biofilm specific growth rate in microbial fuel cells

Ledezma, Pablo, Greenman, John and Ieropoulos, Ioannis (2012). Maximising electricity production by controlling the biofilm specific growth rate in microbial fuel cells. Bioresource Technology, 118, 615-618. doi: 10.1016/j.biortech.2012.05.054

Decentralised nutrient recovery from urine without added power or chemicals

Ledezma, P., Monetti, J., Virdis, B., Keller, J. and Freguia, S. (2018). Decentralised nutrient recovery from urine without added power or chemicals. IWA Nutrient Removal and Recovery Conference 2018, Brisbane, QLD Australia, 18-21 November 2018.

Chemical free nitrogen capture from urine by precipitation as ammonium bicarbonate: overcoming limits of precipitation

Jermakka, Johannes, Thompson Brewster, Emma, Ledezma, Pablo and Freguia, Stefano (2017). Chemical free nitrogen capture from urine by precipitation as ammonium bicarbonate: overcoming limits of precipitation. General Meeting of the International Society for Microbial Electrochemistry and Technology, Lisbon, Portugal, 3 - 6 October 2017.

Decentralised nutrient recovery from urine without added power or chemicals

Ledezma, P., Keller, J. and Freguia, S. (2016). Decentralised nutrient recovery from urine without added power or chemicals. IWA World Water Congress 2016, Brisbane, QLD Australia, 9-13 October 2016.

Comparative analysis of different polymer materials for the construction of microbial fuel cell stacks

Ledezma, P., Ieropoulos, I. and Greenman, J. (2010). Comparative analysis of different polymer materials for the construction of microbial fuel cell stacks. 14th International Biotechnology Symposium and Exhibition (IBS-2008), Rimini, Italy, 14 - 18 September 2010. Amsterdam, The Netherlands: Elsevier BV. doi: 10.1016/j.jbiotec.2010.08.373