A5032751987- Enzyme Catalysis and Immobilization
- Microbial Metabolic Engineering and Bioproduction
- Membrane Separation and Gas Transport
- Biofuel production and bioconversion
- Enzyme-mediated dye degradation
- Catalysis for Biomass Conversion
- biodegradable polymer synthesis and properties
- Process Optimization and Integration
- Membrane Separation Technologies
- Radioactive contamination and transfer
- Radioactive element chemistry and processing
- Carbon Dioxide Capture Technologies
- Catalysts for Methane Reforming
- Ionic liquids properties and applications
- Electrochemical sensors and biosensors
- Radioactivity and Radon Measurements
- Microbial metabolism and enzyme function
- Analytical Chemistry and Chromatography
- Analytical chemistry methods development
- Membrane-based Ion Separation Techniques
- Biochemical and biochemical processes
- Vitamin C and Antioxidants Research
- Microbial Inactivation Methods
- Microbial Metabolites in Food Biotechnology
- Aldose Reductase and Taurine
Flemish Institute for Technological Research
2014-2024
Orano (France)
2011
Ghent University
1953-2010
Agence Nationale pour la Gestion des Déchets Radioactifs
2002
The effect of bubble-free oxygenation on the stability a bi-enzymatic system with redox mediator regeneration for conversion lactose to lactobionic acid was investigated in miniaturized reactor bubbleless oxygenation. Earlier investigations this biocatalytic oxidation have shown that dispersive addition oxygen can cause significant enzyme inactivation. In process studied, cellobiose dehydrogenase (CDH) oxidizes at C-1 position reducing sugar moiety lactobionolactone, which spontaneously...
Abstract Glucose dehydrogenase (GDH) is frequently used for the reduction of NAD + and NADP in bench‐ industrial‐scale syntheses because coenzyme regenerating system GDH easy to apply, robust relatively inexpensive. To optimize application this long known regeneration we investigated commonly applied Bacillus characterized enzyme by its kinetic features presence substrates products at pH 6.4 8.0. Three substrates/products were found inhibit considerably: (i) reaction product...
The technical feasilibity of integrating ABE fermentations with organophilic pervaporation has been described and demonstrated numerous times. However, engineering guidelines for integration fermentation are currently not available. A novel calculation procedure to size units in function carbohydrate concentration the feed is elaborated detail. overall energetic economic outlook less investigated remain unclear. Furthermore, effect permeate pressure cooling frequently ignored. Therefore,...
The performance of fed-batch and continuous ABE fermentations integrated with organophilic pervaporation was thoroughly tested. Poly(octyl methyl siloxane) (POMS) based membranes were applied during fermentation compared to the polydimethylsiloxane (PDMS) membranes. POMS superior both in terms flux, separation factor index. Depending on solvent concentration fermentor, total fluxes (measured fermentation) varied from 0.871 1.392 kg m−2 h−1 for (obtained at 20 mbar) 0.564–0.719 PDMS membrane...
This article reports a new family of functional side-chain phenolic polymers derived from lignin monomers, displaying combination properties that are usually mutually exclusive within single material. includes well-defined molecular structure, transparency, antioxidant activity, and antistatic properties. Our design strategy is based on the lignin-derived bioaromatic monomer dihydroconiferyl alcohol (DCA), promising yet largely unexplored asymmetrical diol bearing one aliphatic hydroxyl...
Syngas fermentation is a leading microbial process for the conversion of carbon monoxide, dioxide, and hydrogen to valuable biochemicals. Clostridium autoethanogenum stands as model organism this process, showcasing its ability convert syngas into ethanol industrially with simultaneous fixation reduction greenhouse gas emissions. A deep understanding on metabolism microorganism influence operational conditions performance key advance technology enhancement production yields. In work, we...
A model has been developed to describe the interaction between two enzymes and an intermediary redox mediator. In this bi-enzymatic process, enzyme cellobiose dehydrogenase oxidizes lactose at C-1 position of reducing sugar moiety lactobionolactone, which spontaneously hydrolyzes lactobionic acid. 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt is used as electron acceptor continuously regenerated by laccase. Oxygen terminal fully reduced water laccase, a...
This work reports an integrated reaction and separation process for the enzymatic synthesis of isopropyl palmitate (IPP) laurate (IPL). Experimental tests IPP with hydrophilic pervaporation mode demonstrated potential technology a stable performance (∼99% fatty acid conversion) without decline in enzyme activity membrane over 5 consecutive tests. A techno-economic analysis was made facility producing 2000 metric tons IPL per annum using experimental results. Furthermore, hybrid mathematical...
This study presents a solvent-free enzymatic approach for the synthesis of fatty acid methyl esters (FAMEs), such as oleate, their application adjuvant in plant protection products (PPP) formulations. The direct esterification between free and methanol was optimized to achieve 98% conversion. kinetics this conversion accurately described by simple second order mechanism non-linear regression applied calculate rate constants forward backward reactions based on full progress curves data....
Uranium and plutonium isotopes were measured in soils, sediments waters an area subject to the past present discharges from uranium conversion plant of Malvési (France). The (236)U (239)Pu are well known activation products they prove be powerful tracers spent fuel releases soils sediments. On other hand (234)U (238)U activities can used distinguish between background sources. Such findings contribute improve monitoring actinides by nuclear facilities (mining sites, conversion, enrichment...
Cypress needles collected at the edge of Malvési uranium facility (SW France) exhibit enhanced activities actinides and some decay products (uranium, americium, plutonium, (230)Th, (226)Ra) compared to a remote site. These resulted from release U via smokestacks passive former artificial ponds located inside nuclear Enhanced are also observed in selected produce (wheat, lettuce, fruits) sampled However, excess measured wheat grains 2007 inconsistent with ratio soils. This result suggests...