The Sono-Hydro-Gen Process (Ultrasound Induced Hydrogen Production): Challenges and Opportunities
Journal article, Peer reviewed
Accepted version
Åpne
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http://hdl.handle.net/11250/2595159Utgivelsesdato
2019Metadata
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Sammendrag
Producing hydrogen using sound waves offers tremendous opportunities, which could lead to a
clean, affordable and reliable energy source. Introducing high-frequency sonic waves to liquid
water could provide an efficient way to produce efficient and clean hydrogen. This particular
review makes a focus on the application of power ultrasound in hydrogen production and discusses
the challenges, opportunities and future directions. This new, ultrasonic based hydrogen
production technology is given the name of “Sono-Hydro-Gen”. It is well known that hydrogen
can be formed from the dissociation of water molecules subjected to ultrasound via the so-called
sonolysis process. Factors affecting the hydrogen production rate and the theory beyond these
effects are described herein. The average hydrogen production-rate reported from the Sono-Hydro-
Gen process is 0.8 μMole per minute at an acoustic intensity of 0.6 W cm-2.
This review also compares the Sono-Hydro-Gen technology with the most commonly used technologies and it is found that this technology would lead to a prosperous and secure hydrogen energy for the future. Recent numerical and experimental investigations on the hydrogen production pathways have been reviewed showing various numerical simulations for different experimental configurations. Finally, performance and efficiency criteria are discussed along with the challenges associated with the Sono-Hydro-Gen process.