Abstract: A system and a method for separation of ions from ions-containing medium is disclosed herein, that utilizes capacitive-faradaic fuel cells (CFFC) particles coated at least partially with catalysts capable of catalyzing redox reactions provided a reductant (fuel) and/or an oxidant, thereby polarizing the particles to more effectively absorb charged species (ions) from the water upon introducing, e.g., H2 gas or O2 gas, in the medium during the adsorption or regeneration. The same concept is utilized in a hybrid electrochemical cell for providing a system and a method for generating and converting electrochemical energy.

Abstract: The present invention relates to a single module, flow-electrode apparatus for continuous water desalination, ion separation and selective ion removal and concentration by capacitive deionization, comprising: a first current collector (1), a first compartment (1?) for a flow electrode, a first ion exchange membrane (AEM, CEM), a first liquid-permeable channel (6a) next to the first ion exchange membrane (AEM, CEM), a second ion exchange membrane (CEM, AEM) with a fixed charge opposite to that of the first ion exchange membrane (AEM, CEM) next to the first liquid-permeable channel (6a), a second liquid-permeable channel (6b) next to the second ion exchange membrane (CEM, AEM), a third ion exchange membrane (AEM, CEM) having the same fixed charge as the first ion exchange membrane (AEM, CEM) next to the second liquid-permeable channel (6b), a second compartment (2?) for a flow electrode, and a second current collector (2), wherein a fluid (4) containing suspended conductive particles or a mixture of conductive

Abstract: Provided are physico-chemical processes for continuous and simultaneous water disinfection, oxidation of off flavor agents, minimization of trihalomethane (THM) production, reduction of nitrate and nitrite production and oxidation of ammonia so as to remove nitrogen species, in saline (for example, seawater) based aquaculture systems. The aquaculture system may be any handling/storage/transport system, for example, recirculated aquaculture systems (RAS), for fish or other aquaculture species.

Abstract: The present invention provides processes for removing nitrogen species from fresh water or high salinity water recirculated aquaculture systems. The processes are based on physico-chemical treatments which are performed at ambient temperatures and at low pH values thus keeping the total ammonia nitrogen concentrations below a value which is considered detrimental for the growth or survival rate of cultured fish/shrimp.

Abstract: Provided are physico-chemical processes for continuous and simultaneous water disinfection, oxidation of off flavor agents, minimization of trihalomethane (THM) production, reduction of nitrate and nitrite production and oxidation of ammonia so as to remove nitrogen species, in saline (for example, seawater) based aquaculture systems. The aquaculture system may be any handling/storage/transport system, for example, recirculated aquaculture systems (RAS), for fish or other aquaculture species.

Abstract: The present invention relates to a single module, flow-electrode apparatus for continuous water desalination, ion separation and selective ion removal and concentration by capacitive deionization, comprising: a first current collector (1), a first compartment (1?) for a flow electrode, a first ion exchange membrane (AEM, CEM), a first liquid-permeable channel (6a) next to the first ion exchange membrane (AEM, CEM), a second ion exchange membrane (CEM, AEM) with a fixed charge opposite to that of the first ion exchange membrane (AEM, CEM) next to the first liquid-permeable channel (6a), a second liquid-permeable channel (6b) next to the second ion exchange membrane (CEM, AEM), a third ion exchange membrane (AEM, CEM) having the same fixed charge as the first ion exchange membrane (AEM, CEM) next to the second liquid-permeable channel (6b), a second compartment (2?) for a flow electrode, and a second current collector (2), wherein a fluid (4) containing suspended conductive particles or a mixture of conductive

Abstract: The present invention provides processes for removing nitrogen species from fresh water or high salinity water recirculated aquaculture systems. The processes are based on physico-chemical treatments which are performed at ambient temperatures and at low p H values thus keeping the total ammonia nitrogen concentrations below a value which is considered detrimental for the growth or survival rate of cultured fish/shrimp.

Abstract: Processes for removing nitrogen species from fresh water or high salinity water recirculated aquaculture systems. The processes are based on physico-chemical treatments which are performed at ambient temperatures and at low pH values thus keeping the total ammonia nitrogen concentrations below a value which is considered detrimental for the growth or survival rate of cultured fish/shrimp.

Abstract: The present invention relates to microtubes made of carbon nanotubes or composites based on carbon nanotubes. The present invention also relates to the use of such microtubes made of carbon nanotubes or composites based of carbon nanotubes as stand alone electrodes electrodes or integrated with current collectors or as a part of membrane electrode assemblies applied in electrochemical systems such as primary and secondary batteries, redox flow batteries, fuel cells, electrochemical capacitors, capacitive deionization systems, electrochemical- and biosensors devices, or solar cells. Another use of the microtubes made of carbon nanotubes or composites based on carbon nanotubes relates to their application as supported or unsupported tubular membranes for water or wastewater filtration, in aqueous and organic solvent filtration, for blood filtration, for gas separation processes, in gas and liquid adsorption processes or in sensor applications.

Abstract: The present invention relates to an oxygen-vanadium redox flow battery with vanadium electrolyte having carbon particles dispersed therein.

Abstract: The present invention provides processes for removing nitrogen species from fresh water or high salinity water recirculated aquaculture systems. The processes are based on physico-chemical treatments which are performed at ambient temperatures and at low p H values thus keeping the total ammonia nitrogen concentrations below a value which is considered detrimental for the growth or survival rate of cultured fish/shrimp.