Stefano Freguia

Self-Powered Bioelectrochemical Nutrient Recovery for Fertilizer Generation from Human Urine

Stefano Freguia, Maddalena E Logrieco, Juliette Monetti, Pablo Ledezma, Bernardino Virdis, Seiya Tsujimura

Journal article  |  2019  |  Sustainability

Nutrient recovery from source-separated human urine has been identified by many as a viable avenue towards the circular economy of..

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

Igor Vassilev, Frauke Kracke, Stefano Freguia, Jurg Keller, Jens O Kroemer, Pablo Ledezma, Bernardino Virdis

Journal article  |  2019  |  Chemical Communications

A microbial electrosynthesis cell comprising two biological cathode chambers sharing the same anode compartment is used to promote..

Nutrient Recovery by Bio-Electroconcentration is Limited by Wastewater Conductivity

Juliette Monetti, Pablo Ledezma, Bernardino Virdis, Stefano Freguia

Journal article  |  2019  |  ACS Omega

Biomimetic Peptide Nanowires Designed for Conductivity

Rhiannon CG Creasey, A Bernardus Mostert, Armin Solemanifar, Tuan AH Nguyen, Bernardino Virdis, Stefano Freguia, Bronwyn Laycock

Journal article  |  2019  |  ACS Omega

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

Guillermo Pozo, Yang Lu, Sebastien Pongy, Jurg Keller, Pablo Ledezma, Stefano Freguia

Journal article  |  2017  |  Bioelectrochemistry

Selective microbial retention is of paramount importance for the long-term performance of cathodic sulfate reduction in microbial ..

Modelling recovery of ammonium from urine by electro-concentration in a 3-chamber cell

Emma Thompson Brewster, Johannes Jermakka, Stefano Freguia, Damien J Batstone

Journal article  |  2017  |  Water Research

Electro-concentration enables treatment and nutrient recovery from source-separated urine, and is a potential technology for on-si..

Recovering Nitrogen as a Solid without Chemical Dosing: Bio-Electroconcentration for Recovery of Nutrients from Urine

Pablo Ledezma, Johannes Jermakka, Jurg Keller, Stefano Freguia

Journal article  |  2017  |  Environmental Science & Technology Letters

Webcasts promote in-class active participation and learning in an engineering elective course

Stefano Freguia

Journal article  |  2017  |  European Journal of Engineering Education

Redox-Polymers Enable Uninterrupted Day/Night Photo-Driven Electricity Generation in Biophotovoltaic Devices

Libertus Darus, Takuya Sadakane, Pablo Ledezma, Seiya Tsujimura, Isioma Osadebe, Donal Leech, Lo Gorton, Stefano Freguia

Journal article  |  2017  |  Journal of The Electrochemical Society

Nitrite addition to acidified sludge significantly improves digestibility, toxic metal removal, dewaterability and pathogen reduction

Fangzhou Du, Juerg Keller, Zhiguo Yuan, Damien J Batstone, Stefano Freguia, Ilje Pikaar

Journal article  |  2016  |  Scientific Reports

Sludge management is a major issue for water utilities globally. Poor digestibility and dewaterability are the main factors determ..

Effect of biomass concentration on methane oxidation activity using mature compost and graphite granules as substrata

S Xie, T O'Dwyer, S Freguia, I Pikaar, WP Clarke

Journal article  |  2016  |  Waste Management

Reported methane oxidation activity (MOA) varies widely for common landfill cover materials. Variation is expected due to differen..

Cathodic biofilm activates electrode surface and achieves efficient autotrophic sulfate reduction

Guillermo Pozo, Ludovic Jourdin, Yang Lu, Jurg Keller, Pablo Ledezma, Stefano Freguia

Journal article  |  2016  |  Electrochimica Acta

Biologically Induced Hydrogen Production Drives High Rate/High Efficiency Microbial Electrosynthesis of Acetate from Carbon Dioxide

Ludovic Jourdin, Yang Lu, Victoria Flexer, Jurg Keller, Stefano Freguia

Journal article  |  2016  |  ChemElectroChem

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

Libertus Darus, Pablo Ledezma, Juerg Keller, Stefano Freguia

Journal article  |  2016  |  Photosynthesis Research

This work studies how extracellular electron transfer (EET) from cyanobacteria-dominated marine microbial biofilms to solid electr..

Bringing High-Rate, CO2-Based Microbial Electrosynthesis Closer to Practical Implementation through Improved Electrode Design and Operating Conditions

Ludovic Jourdin, Stefano Freguia, Victoria Flexer, Jurg Keller

Journal article  |  2016  |  Environmental Science & Technology

The enhancement of microbial electrosynthesis (MES) of acetate from CO2 to performance levels that could potentially support pract..

High Acetic Acid Production Rate Obtained by Microbial Electrosynthesis from Carbon Dioxide

Ludovic Jourdin, Timothy Grieger, Juliette Monetti, Victoria Flexer, Stefano Freguia, Yang Lu, Jun Chen, Mark Romano, Gordon G Wallace, Jurg Keller

Journal article  |  2015  |  Environmental Science & Technology

High product specificity and production rate are regarded as key success parameters for large-scale applicability of a (bio)chemic..

Fully reversible current driven by a dual marine photosynthetic microbial community

Libertus Darus, Yang Lu, Pablo Ledezma, Juerg Keller, Stefano Freguia

Journal article  |  2015  |  Bioresource Technology

The electrochemical activity of two seawater microbial consortia were investigated in three-electrode bioelectrochemical cells. Tw..

Electrochemical Abatement of Hydrogen Sulfide from Waste Streams

Ilje Pikaar, Elena Mejia Likosova, Stefano Freguia, Juerg Keller, Korneel Rabaey, Zhiguo Yuan

Journal article  |  2015  |  Critical Reviews in Environmental Science and Technology

Enhancing Toxic Metal Removal from Acidified Sludge with Nitrite Addition

Fangzhou Du, Stefano Freguia, Zhiguo Yuan, Juerg Keller, Ilje Pikaar

Journal article  |  2015  |  Environmental Science & Technology

The production of sludge (biosolids) during wastewater treatment is a major issue for water utilities. A main issue limiting its b..

Development of bioelectrocatalytic activity stimulates mixed-culture reduction of glycerol in a bioelectrochemical system

Mi Zhou, Stefano Freguia, Paul G Dennis, Juerg Keller, Korneel Rabaey

Journal article  |  2015  |  Microbial Biotechnology

In a microbial bioelectrochemical system (BES), organic substrate such as glycerol can be reductively converted to 1,3-propanediol..

Autotrophic hydrogen-producing biofilm growth sustained by a cathode as the sole electron and energy source

Ludovic Jourdin, Stefano Freguia, Bogdan C Donose, Jurg Keller

Journal article  |  2015  |  Bioelectrochemistry

It is still unclear whether autotrophic microbial biocathode biofilms are able to self-regenerate under purely cathodic conditions..

Source-separated urine opens golden opportunities for microbial electrochemical technologies

Pablo Ledezma, Philipp Kuntke, Cees JN Buisman, Jurg Keller, Stefano Freguia

Journal article  |  2015  |  Trends in Biotechnology

The food security of a booming global population demands a continuous and sustainable supply of fertilisers. Their current once-th..

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

Pablo Ledezma, Bogdan C Donose, Stefano Freguia, Jurg Keller

Journal article  |  2015  |  Electrochimica Acta

Methanobacterium enables high rate electricity-driven autotrophic sulfate reduction

Guillermo Pozo, Ludovic Jourdin, Yang Lu, Pablo Ledezma, Jurg Keller, Stefano Freguia

Journal article  |  2015  |  RSC Advances

The autotrophic reduction of sulfate can be sustained with a cathode as the only electron donor in bioelectrochemical systems (BES..

Dissimilatory nitrate reduction to ammonium as an electron sink during cathodic denitrification

Elisa M Sander, Bernardino Virdis, Stefano Freguia

Journal article  |  2015  |  RSC Advances

Nitrate reduction to ammonium is shown as a competitive pathway during cathodic denitrification at low potential, and is dependent..

Methanobacterium enables high rate electricity-driven autotrophic sulfate reduction (vol 5, pg 89368, 2015)

Guillermo Pozo, Ludovic Jourdin, Yang Lu, Pablo Ledezma, Jurg Keller, Stefano Freguia

Journal article  |  2015  |  RSC Advances

Correction for ‘Methanobacterium enables high rate electricity-driven autotrophic sulfate reduction’ by Guillermo Pozo et al., RSC..

Oxygen Suppresses Light-Driven Anodic Current Generation by a Mixed Phototrophic Culture

Libertus Darus, Pablo Ledezma, Juerg Keller, Stefano Freguia

Journal article  |  2014  |  Environmental Science & Technology

This paper describes the detrimental effect of photosynthetically evolved oxygen on anodic current generation in the presence of r..

A novel carbon nanotube modified scaffold as an efficient biocathode material for improved microbial electrosynthesis

Ludovic Jourdin, Stefano Freguia, Bogdan C Donose, Jun Chen, Gordon G Wallace, Jurg Keller, Victoria Flexer

Journal article  |  2014  |  J. Mater. Chem. A

Enhanced performance for the bioelectrosynthesis of acetate from carbon dioxide is achieved with a new three-dimensional CNT-modif..

Flame Oxidation of Stainless Steel Felt Enhances Anodic Biofilm Formation and Current Output in Bioelectrochemical Systems

Kun Guo, Bogdan C Donose, Alexander H Soeriyadi, Antonin Prevoteau, Sunil A Patil, Stefano Freguia, J Justin Gooding, Korneel Rabaey

Journal article  |  2014  |  Environmental Science & Technology

Stainless steel (SS) can be an attractive material to create large electrodes for microbial bioelectrochemical systems (BESs), due..

A novel electrochemical process for the recovery and recycling of ferric chloride from precipitation sludge

E Mejia Likosova, J Keller, Y Poussade, S Freguia

Journal article  |  2014  |  Water Research

During wastewater treatment and drinking water production, significant amounts of ferric sludge (comprising ferric oxy-hydroxides ..

Surfactant treatment of carbon felt enhances anodic microbial electrocatalysis in bioelectrochemical systems

Kun Guo, Alexander H Soeriyadi, Sunil A Patil, Antonin Prevoteau, Stefano Freguia, J Justin Gooding, Korneel Rabaey

Journal article  |  2014  |  Electrochemistry Communications

Biofuels

S Freguia, B Virdis, K Rabaey

Conference Proceedings  |  2014  |  Victorian Branch of the Australian Agricultural and Resource Economics Society

Anodic Reactivity of Ferrous Sulfide Precipitates Changing over Time due to Particulate Speciation

Elena Mejia Likosova, Richard N Collins, Jurg Keller, Stefano Freguia

Journal article  |  2013  |  Environmental Science & Technology

The disposal of ferric phosphate (FePO4) sludge, routinely generated in wastewater and drinking water treatment, has a major impac..

Carbon and Electron Fluxes during the Electricity Driven 1,3-Propanediol Biosynthesis from Glycerol

Mi Zhou, Jingwen Chen, Stefano Freguia, Korneel Rabaey, Juerg Keller

Journal article  |  2013  |  Environmental Science & Technology

1,3-Propanediol (1,3-PDO) can be produced biologically through glycerol fermentation. While such a process typically involves a pu..

Spontaneous modification of carbon surface with neutral red from its diazonium salts for bioelectrochemical systems

Kun Guo, Xin Chen, Stefano Freguia, Bogdan C Donose

Journal article  |  2013  |  Biosensors and Bioelectronics

This study introduces a novel and simple method to covalently graft neutral red (NR) onto carbon surfaces based on spontaneous red..

Understanding colloidal FeSx formation from iron phosphate precipitation sludge for optimal phosphorus recovery

E Mejia Likosova, J Keller, RA Rozendal, Y Poussade, S Freguia

Journal article  |  2013  |  Journal of Colloid and Interface Science

The use of sulfide to form iron sulfide precipitates is an attractive option for separation and recovery of phosphorus and ferric ..

Effects of Surface Charge and Hydrophobicity on Anodic Biofilm Formation, Community Composition, and Current Generation in Bioelectrochemical Systems

Kun Guo, Stefano Freguia, Paul G Dennis, Xin Chen, Bogdan C Donose, Jurg Keller, J Justin Gooding, Korneel Rabaey

Journal article  |  2013  |  Environmental Science & Technology

The focus of this study was to investigate the effects of surface charge and surface hydrophobicity on anodic biofilm formation, b..

Dynamically Adaptive Control System for Bioanodes in Serially Stacked Bioelectrochemical Systems

Stephen J Andersen, Ilje Pikaar, Stefano Freguia, Brian C Lovell, Korneel Rabaey, Rene A Rozendal

Journal article  |  2013  |  Environmental Science & Technology

Microbial bioelectrochemical systems (BESs) use microorganisms as catalysts for electrode reactions. They have emerging applicatio..

Bioelectrochemical systems: Microbial versus enzymatic catalysis

Stefano Freguia, Bernardino Virdis, Falk Harnisch, Jurg Keller

Journal article  |  2012  |  Electrochimica Acta

A Basic Tutorial on Cyclic Voltammetry for the Investigation of Electroactive Microbial Biofilms

Falk Harnisch, Stefano Freguia

Journal article  |  2012  |  Chemistry - An Asian Journal

Electroactive microbial biofilms and the microorganisms embedded therein are not only of crucial fundamental interest because they..

Bioelectrochemical conversion of glycerol to 1,3-propanediol

K Rabaey, A Wise, AJ Johnstone, B Virdis, S Freguia, RA Rozendal

Conference Proceedings  |  2011  |  ACS National Meeting Book of Abstracts

Effects of oxygen on Shewanella decolorationis NTOU1 electron transfer to carbon-felt electrodes

Shiue-Lin Li, Stefano Freguia, Shiu-Mei Liu, Sheng-Shung Cheng, Seiya Tsujimura, Osamu Shirai, Kenji Kano

Journal article  |  2010  |  Biosensors and Bioelectronics

To clarify the major factor caused by oxygen-enhancing charge production of Shewanella decolorationis NTOU1 towards a polarized an..

Flavins contained in yeast extract are exploited for anodic electron transfer by Lactococcus lactis

Masaki Masuda, Stefano Freguia, Yung-Fu Wang, Seiya Tsujimura, Kenji Kano

Journal article  |  2010  |  Bioelectrochemistry

Microbial fuel cells operating on mixed fatty acids

Stefano Freguia, Ee Hoi Teh, Nico Boon, Kar Man Leung, Jurg Keller, Korneel Rabaey

Journal article  |  2010  |  Bioresource Technology

Strategies are being developed to harvest the energy content of the wasted sludge generated from the treatment of domestic wastewa..

Electron transfer pathways in microbial oxygen biocathodes

Stefano Freguia, Seiya Tsujimura, Kenji Kano

Journal article  |  2010  |  Electrochimica Acta

Lactococcus lactis catalyses electricity generation at microbial fuel cell anodes via excretion of a soluble quinone

Stefano Freguia, Masaki Masuda, Seiya Tsujimura, Kenji Kano

Journal article  |  2009  |  Bioelectrochemistry

Syntrophic Processes Drive the Conversion of Glucose in Microbial Fuel Cell Anodes

Stefano Freguia, Korneel Rabaey, Zhiguo Yuan, Juerg Keller

Journal article  |  2008  |  Environmental Science & Technology

Cathodic oxygen reduction catalyzed by bacteria in microbial fuel cells

Korneel Rabaey, Suzanne T Read, Peter Clauwaert, Stefano Freguia, Philip L Bond, Linda L Blackall, Jurg Keller

Journal article  |  2008  |  The ISME Journal

Microbial fuel cells (MFCs) have the potential to combine wastewater treatment efficiency with energetic efficiency. One of the ma..

Sequential anode-cathode configuration improves cathodic oxygen reduction and effluent quality of microbial fuel cells

Stefano Freguia, Korneel Rabaey, Zhiguo Yuan, Juerg Keller

Journal article  |  2008  |  Water Research

The anode potential regulates bacterial activity in microbial fuel cells

Peter Aelterman, Stefano Freguia, Jurg Keller, Willy Verstraete, Korneel Rabaey

Journal article  |  2008  |  Applied Microbiology and Biotechnology

The anode potential regulates the bacterial activity in microbial fuel cells.

P Aelterman, S Freguia, J Keller, K Rabaey, W Verstraete

Journal article  |  2008  |  Communications in agricultural and applied biological sciences

Non-catalyzed cathodic oxygen reduction at graphite granules in microbial fuel cells

Stefano Freguia, Korneel Rabaey, Zhiguo Yuan, Jurg Keller

Journal article  |  2007  |  Electrochimica Acta

Electron and carbon balances in microbial fuel cells reveal temporary bacterial storage behavior during electricity generation

Stefano Freguia, Korneel Rabaey, Zhiguo Yuan, Jurg Keller

Journal article  |  2007  |  Environmental Science & Technology

Microbial fuel cells: Methodology and technology

Bruce E Logan, Bert Hamelers, Rene A Rozendal, Uwe Schrorder, Jurg Keller, Stefano Freguia, Peter Aelterman, Willy Verstraete, Korneel Rabaey

Journal article  |  2006  |  Environmental Science & Technology

Modeling of CO2 capture by aqueous monoethanolamine

S Freguia, GT Rochelle

Journal article  |  2003  |  AIChE Journal