Abstract: A bioelectrochemical reactor (1) has an anode chamber (11) having at least two bioanodes (12, 13), and an anodic electrolyte (14) with an anodic electroactive microorganisms,—a cathode chamber (21) with at least one biocathode (22), and a cathodic electrolyte (24) with a cathodic electroactive microorganisms. The anode chamber (11) is separated from the cathode chamber (21) by, running from the anode chamber to the cathode chamber, a cation exchange membrane (31) and an anion exchange membrane (32). The cation and anion exchange membranes are separated from each other by an inter-membrane chamber (30), and means for applying a potential difference between the interconnected bioanodes and the biocathode/biocathodes. The bioanodes and biocathode/biocathodes have active surfaces such that the total active surface of the biocathode/biocathodes (22) is greater than the total active surface of the two bioanodes (12, 13).

Abstract: A bioelectrochemical reactor (1) has an anode chamber (11) having at least two bioanodes (12, 13), and an anodic electrolyte (14) with an anodic electroactive microorganisms,—a cathode chamber (21) with at least one biocathode (22), and a cathodic electrolyte (24) with a cathodic electroactive microorganisms. The anode chamber (11) is separated from the cathode chamber (21) by, running from the anode chamber to the cathode chamber, a cation exchange membrane (31) and an anion exchange membrane (32). The cation and anion exchange membranes are separated from each other by an inter-membrane chamber (30), and means for applying a potential difference between the interconnected bioanodes and the biocathode/biocathodes. The bioanodes and biocathode/biocathodes have active surfaces such that the total active surface of the biocathode/biocathodes (22) is greater than the total active surface of the two bioanodes (12, 13).

Abstract: Disclosed is a method for synthesising organic molecules from carbon-containing sources and dihydrogen, as well as a device for implementing the method. The method can make use of carbon-containing sources and/or dihydrogen from renewable resources.

Abstract: Disclosed is a method for synthesising organic molecules from carbon-containing sources and dihydrogen, as well as a device for implementing the method. The method can make use of carbon-containing sources and/or dihydrogen from renewable resources.

Abstract: An electrolysis device including a bioanode and a cathode catalyst, a method for implementing the same, and the use thereof for producing hydrogen.

Abstract: The present invention relates to an oxidation process for organic matter and the kit for carrying out said process, in particular for the treatment of waste, effluent and sewage sludge.

Abstract: A proton exchange membrane fuel cell comprises an cathodic compartment including a cathode, an oxidant consisting of oxygen and at least one enzyme catalyst, an anodic compartment comprising an anode, a fuel and at least one catalyst. The anodic and cathodic compartments are arranged at either end of the membrane. The cell is characterized in that the enzyme catalyst of the anodic compartment is an oxidoreductase type enzyme capable of catalyzing the reduction of oxygen into hydrogen peroxide and the hydrogen peroxide is a direct receptor of the electrons from the cathode.

Abstract: A proton exchange membrane fuel cell comprises an cathodic compartment including a cathode, an oxidant consisting of oxygen and at least one enzyme catalyst, an anodic compartment comprising an anode, a fuel and at least one catalyst. The anodic and cathodic compartments are arranged at either end of the membrane. The cell is characterized in that the enzyme catalyst of the anodic compartment is an oxidoreductase type enzyme capable of catalyzing the reduction of oxygen into hydrogen peroxide and the hydrogen peroxide is a direct receptor of the electrons from the cathode.

Abstract: A proton exchange membrane fuel cell comprises an cathodic compartment including a cathode, an oxidant consisting of oxygen and at least one enzyme catalyst, an anodic compartment comprising an anode, a fuel and at least one catalyst. The anodic and cathodic compartments are arranged at either end of the membrane. The cell is characterized in that the enzyme catalyst of the anodic compartment is an oxidoreductase type enzyme capable of catalyzing the reduction of oxygen into hydrogen peroxide and the hydrogen peroxide is a direct receptor of the electrons from the cathode.

Abstract: Electrolysis device intended to produce hydrogen by the reduction of water, comprising a cathode compartment, an anode compartment, and an element connecting said compartments and allowing ions to migrate between them, the device being characterized in that the cathode compartment contains at least one weak acid capable of catalyzing the reduction and an electrolytic solution, the pH of which is in the range between 3 and 9.

Abstract: The present invention relates to a process for the treatment of at least one of the electrodes (cathode and/or anode) of a fuel cell, before the said cell is operated, and before or after the said electrode is placed in the said cell, comprising the step consisting in forming a biofilm on at least part of the surface of the said electrode, by immersing the said electrode in a medium capable of causing the growth of biofilms, the said biofilm being intended to catalyse the reaction at the electrode, and the step consisting simultaneously in subjecting the said electrode to a polarization potential. The invention also relates to a fuel cell comprising at least one electrode covered with a biofilm, obtained before the said electrode is placed in the cell, and to the electrode.

Abstract: The invention relates to a proton exchange membrane fuel cell comprising: a cathodic compartment comprising a cathode, an oxidant consisting of oxygen and at least one enzyme catalyst; an anodic compartment comprising an anode, a fuel and at least one catalyst, said anodic and cathodic compartments being arranged at either end of said membrane, said cell being characterised in that said enzyme catalyst of the cathodic compartment is an oxidoreductase type enzyme, said enzyme being capable of catalysing the reduction of oxygen into hydrogen peroxide, said hydrogen peroxide fulfilling the role of direct acceptor of the electrons from the cathode.

Abstract: The invention relates to a process for the electrochemical regeneration of pyridine cofactors.The process of the invention is characterized by carrying out a doubly mediated catalysis by means of a flavin and an oxidoreductase enzyme.