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Dispositivo bioelectroquímico para producción de hidrógeno y oxígeno mediante separación de agua

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOES20150115004
Publicado:
05/08/2015
Caducidad:
04/08/2016
Resumen:
Un centro español de investigación pública ha diseñado un dispositivo bioelectroquímico para separación de agua que utiliza una enzima lacasa desarrollada por el centro mediante ingeniería de proteínas, que hace que la electrolisis sea más eficiente y económica en la producción de hidrógeno. La lacasa cataliza la oxidación de agua a sobrepotenciales bajos, permitiendo un importante ahorro energético y altas proporciones de oxígeno. La cantidad de oxígeno obtenida, en comparación con la cantidad de peróxido de hidrógeno, es cinco veces mayor que en la electrolisis no catalizada. Se buscan empresas interesadas en continuar con el desarrollo y utilizar el dispositivo bajo licencia de patente.


Details

Tittle:
Bioelectrochemical device for hydrogen or oxygen production by water splitting
Summary:
A Spanish public research organisation has designed a bioelectrochemical device for water splitting using a laccase enzyme developed by the Institution, through protein engineering, which makes the electrolysis more efficient and economical for hydrogen production. The laccase catalyses the water oxidation at low overpotentials, allowing significant energetic saving, with high oxygen evolution. Companies interested in further development and use of this device under a patent license, are sought.
Description:
Decomposition of pure water into hydrogen and oxygen at standard temperature and pressure is not favourable in thermodynamic terms. Currently, the electrolytic process is rarely used in industrial applications since hydrogen can currently be produced more affordably from fossil fuels. In this context finding efficient and economical water splitting process would be a key technology component of a hydrogen economy.
the Spanish research centre has used a biocatalyst for increasing the efficiency of the electrolysis of water, specifically, a laccase enzyme has been immobilised onto the anode of an electrochemical cell, allowing water oxidation and producing oxygen when applying oxidative potentials with low overpotentials. These enzymes have been broadly used as bioelectrocatalysts in fuel cells, as electron donor for oxygen reduction. However in this case, reverse activity of the enzyme has been used, allowing high oxygen evolution ratio against hydrogen peroxide production during water electrolysis.
A high potential laccase, resistant to anions and developed by our Institution through directed evolution techniques, was immobilised onto a graphene anode with excellent results. The overpotencial for oxygen production was lowered and it resulted in an electrode with higher lifetime than the one immobilised with native lacases, keeping its activity after 3 days of use.
The Spanish public institution is looking for companies interested in the use of this device under a License Agreement, as the technology has been protected by a patent application. However, this technology is not fully developed, so further research must be done, for example, under collaborative research agreement.
Advantages and Innovations:
· The electro-catalytic anode with the immobilised laccase allows simultaneous production of hydrogen and oxygen at potentials around 1.4 V vs. RHE.
· The amount of oxygen obtained, compared with hydrogen peroxide, is five times higher than the amount obtained in the no-catalysed electrolysis.
· This method may be carried out without need of solar light, unlike PSII, the only enzyme known to date to catalyse the electrolytic generation of oxygen from water
· The evolved enzyme can be produced at industrial scale and it is easily immobilised onto low-density graphite electrodes.
· The energetic saving and the low cost of the electrochemical device make this electrochemical production of hydrogen a cost efficient process.
Stage of Development:
Under development/lab tested
IPs:
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
PCT ("international") patent application filed

Partner sought

Type and Role of Partner Sought:
Companies or institutions interested in developing and using the technology or the device for hydrogen production, under patent license.

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English
Spanish

Keywords

Technology Keywords:
04002001 Fuel cells
06002004 Ingeniería de proteínas
04002002 Producción de hidrógeno
06002003 Tecnología de enzimas
03004004 Tecnología e ingeniería eléctrica / aparatos eléctricos