A5091786200- Microbial Metabolic Engineering and Bioproduction
- Microbial Fuel Cells and Bioremediation
- Biofuel production and bioconversion
- Membrane-based Ion Separation Techniques
- Anaerobic Digestion and Biogas Production
- CO2 Reduction Techniques and Catalysts
- Extraction and Separation Processes
- Wastewater Treatment and Nitrogen Removal
- Ionic liquids properties and applications
- Membrane Separation Technologies
- Supercapacitor Materials and Fabrication
- Fuel Cells and Related Materials
- Probiotics and Fermented Foods
- Electrochemical sensors and biosensors
- Magnetic and Electromagnetic Effects
- Nanopore and Nanochannel Transport Studies
- Electrocatalysts for Energy Conversion
- Electrokinetic Soil Remediation Techniques
- Catalysis for Biomass Conversion
- Wastewater Treatment and Reuse
- Microbial Metabolism and Applications
- Plant and Biological Electrophysiology Studies
- Phosphorus and nutrient management
- Microbial metabolism and enzyme function
- Enzyme Catalysis and Immobilization
Ghent University
2013-2020
Centre for Advanced Process Technology for Urban Resource Recovery
2020
Ghent University Hospital
2015-2019
Ecologie Microbienne Lyon
2015
Using carbon dioxide for bioproduction combines decreased greenhouse gas emissions with a dependence on fossil production of multicarbon products. Microbial electrosynthesis (MES) enables this, using renewable energy to drive the reduction CO2 at cathode an electrochemical cell. To date, low product concentrations preclude cost-effective extraction during MES. Here we present approach that couples and recovery acetate in single, three-chamber reactor system. Acetate was produced 61%...
A membrane electrolysis system that was coupled with a bioreactor and pertraction accomplished phase separation of oil, which consisted >90% medium-chain carboxylic acids, without addition chemicals.
Short-chain carboxylates such as acetate are easily produced through mixed culture fermentation of many biological waste streams, although routinely digested to biogas and combusted rather than harvested. We developed a pipeline extract upgrade short-chain esters via membrane electrolysis biphasic esterification. Carboxylate-rich broths electrolyzed in cathodic chamber from which anions flux across an anion exchange into anodic chamber, resulting clean acid concentrate with neither solids...
Volatile fatty acids (VFA) are building blocks for the chemical industry. Sustainable, biological production is constrained by and recovery costs, including need intensive pH correction. Membrane electrolysis has been developed as an in situ extraction technology tailored to direct of VFA from fermentation while stabilizing acidogenesis without caustic addition. A current applied across anion exchange membrane reduces broth (catholyte, water reduction: H2O + e(-) → ½ H2 OH(-)) drives...
Medium chain carboxylic acids, such as caproic acid, are conventionally produced from food materials. Caproic acid can be through fermentation by the reverse β-oxidation of lactic generated low value lignocellulosic biomass. In situ extraction achieved membrane electrolysis coupled to process, allowing recovery phase separation.Grass was fermented in a leach-bed-type reactor, which then further converted secondary fermenter. The concentration 9.36 ± 0.95 g L-1 over 33-day semi-continuous...
A microbial community is engaged in a complex economy of co-operation and competition for carbon energy. In engineered systems such as anaerobic digestion fermentation, these relationships are exploited conversion broad range substrates into products, biogas, ethanol carboxylic acids. Medium chain fatty acids (MCFA), example hexanoic acid, valuable, energy dense fermentation however MCFA exhibit toxicity to microorganisms at low concentrations. Here we operated continuous mixed-population...
Disc shaped microbial aggregates enriched in Ruminococcaceae and lactic acid bacteria produced caproic from solid-free thin stillage.
Abstract Hexanoic acid (HA), also called caproic acid, can be used as an antimicrobial agent and a precursor to various chemicals, such fuels, solvents fragrances. HA produced from ethanol acetate by the mesophilic anaerobic bacterium Clostridium kluyveri , via two successive elongation steps over butyrate. A high-throughput growth curve technique was coupled data analysis framework assess kinetics for range of substrate product concentrations. Using this method, rates several kinetic...
Abstract Ionic liquids can both act as a solvent and mediate esterification to valorize low‐titer volatile fatty acids generate organic solvents from renewable carbon sources including biowaste CO 2 . In this study, four phosphonium ionic were tested for single‐stage extraction of acetic acid dilute stream ethyl acetate with added ethanol heat. The proceeded maximum conversion 85.9±1.3 % after 30 min at 75 °C 1:1 stoichiometric ratio reactants. Extraction be tailored using mixed‐anion...
Microbial bioelectrochemical systems (BESs) use microorganisms as catalysts for electrode reactions. They have emerging applications in bioenergy, bioproduction, and bioremediation. BESs can be scaled up a linked series of units or cells; however, this may lead to so-called cell reversal. Here, we demonstrate balance system (CBS) that controls individual BES cells connected electrically by dynamically adapting the applied potential kilohertz frequency range relative performance bioanode. The...
Streams such as urine and manure can contain high levels of ammonium, which could be recovered for reuse in agriculture or chemistry. The extraction ammonium from an ammonium-rich stream is demonstrated using electrochemical a bioelectrochemical system. Both systems are controlled by potentiostat to either fix the current (for cell) potential working electrode cell). In cell, electroactive bacteria catalyze anodic reaction, whereas cell applies higher voltage produce current. consequent...
The fermentative production of succinic acid leads to increasing toxicity over time, and requires continuous removal from the broth improve fermentation efficiency.
Streams such as urine and manure can contain high levels of ammonium, which could be recovered for reuse in agriculture or chemistry. The extraction ammonium from an ammonium-rich stream is demonstrated using electrochemical a bioelectrochemical system. Both systems are controlled by potentiostat to either fix the current (for cell) potential working electrode cell). In cell, electroactive bacteria catalyze anodic reaction, whereas cell applies higher voltage produce current. consequent...