New Invention Profile
| Publication No: | IN202411012612 [India] | Application No: | IN202411012612 |
| Title: | An integrated electrochemical-cum-electro-osmotic system for selective electrolysis of cations and anions rich water for hydrogen generation and a process thereof | ||
| Publication Date: | 05-09-2025 | File Date: | 21-02-2024 |
| Inventor(s): | Singaram, Vengatesan; Subbiah, Ravichandran; Rajendran, Malini; Subramanyan, Vasudevan | ||
| IPC Classification: | C25B000104, B01D006100, C25B000923, C25B0011073, C25B0011077, C25B0011089, C25B001302 | ||
| Abstract: | Direct electrolysis of natural waters is very essential in recent days since it alleviates the added processes of purifying the natural waters before electrolysis, which is cost beneficial and also make the electrolysis process simpler and easier. The challenges in natural water electrolysis are enormous and it is necessary to understand the process deeply for designing the efficient electrolyser system for selective water oxidation. Conventionally, the strategies such as modification of electrode surfaces for repelling the anions, especially the Cl- ions or the complete removal of the ions (cations or anions) using pretreatment processes are commonly used in selective natural water electrolysis. These strategies increase the risk of electrode stability against vulnerable cations/anions as well as the capital cost of the system as a whole. At this scenario, an inbuilt filtration/purification mechanism within the electrolyser that can remove cations/anions and selectively allow only water molecules would be more advantageous. Hence, the present invention provides an integrated electrochemical-cum-electro-osmotic system for selective oxidation ofwater molecules that are transported by concentration driven electro-osmotic mobility. The change in volume and conductivity of the solution in feed water (seawater) compartment is periodically measured which revealed the transport of water molecules from feed water compartment to electrolyser compartment during electrolysis. The continuous electrolysis using neutral electrolytes in the electrolyser compartment are performed and the results revealed the increase in current density with increase in electrolyte concentration. The electrolysis also confirms the selective oxidation of water molecules to produce hydrogen and oxygen, thus avoiding the corrosive chlorine evolution. |
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: director[at]cecri[dot]res[dot]in
:91-4565-227777
:https://www.cecri.res.in