Perspectives of Hydrogen Generation in Cavitation–Jet Hydrodynamic Reactor

Perspectives of Hydrogen Generation in Cavitation–Jet Hydrodynamic Reactor

The article investigates the potential for producing hydrogen by combining the methods of water splitting under cavitation and the chemical activation of aluminum in a high-speed cavitation–jet flow generated by a specialized hydrodynamic reactor. The process of cavitation and water spraying causes...

Full description

Saved in:
Bibliographic Details
Published in:Applied sciences Vol. 14; no. 20; p. 9415
Main Authors: Mamytbekov, G. K., Danko, I. V., Beksultanov, Zh. I., Nurtazin, Y. R., Rakhimbayev, A.
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-10-2024
Subjects:
Alternative energy
Aluminum
Aluminum hydroxide
Carbon monoxide
Cavitation
cavitation–jet reactor
Chemical reactions
Construction
Costs
Efficiency
Electricity
Electricity distribution
Force and energy
Gas detectors
Gases
Hydrogen
hydrogen generation
Hydrogen production
Kazakhstan
Laval nozzle
Methane
Natural gas
Organic chemicals
Plasma
plasma formation
Plasma physics
Radiation
Recycling (Waste, etc.)
Synthesis gas
Venturi tube
Waste management
Water
Kazakhstan
United States > US
Russia
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The article investigates the potential for producing hydrogen by combining the methods of water splitting under cavitation and the chemical activation of aluminum in a high-speed cavitation–jet flow generated by a specialized hydrodynamic reactor. The process of cavitation and water spraying causes the liquid heating itself until it reaches saturated vapor pressure, resulting in the creation of vapor–gaseous products from the splitting of water molecules. The producing of vapor–gaseous products can be explained through the theory of non-equilibrium low-temperature plasma formation within a high-speed cavitation–jet flow of fluid. Special focus is also given to the interactions occurring at the interface boundary phase of aluminum and liquid under cavitation condition. The primary solid products formed on aluminum surfaces are bayerite, copper oxides (I and II), iron carbide, and a compound of magnesium oxides and aluminum hydroxide. A high hydrogen yield of 60% was achieved when using a 0.1% sodium hydroxide solution as a working liquid compared to demineralized water. Moreover, hydrogen methane was also detected in the volume of the vapor–gas mixture, which could be utilized to address the challenges of decarbonization and the recycling of aluminum-containing solid industrial and domestic waste. This work provides a contribution to the study of the mechanism of hydrogen generation by cavitation–jet processing of water and aqueous alkali solutions, in which conditions are created for double cavitation in the cavitation–jet chamber of the hydrodynamic reactor.
ISSN:2076-3417
2076-3417
DOI:10.3390/app14209415