A new technology to produce hydrogen from tap water – pv magazine International

A Spanish scientist has developed a system that would be able to produce hydrogen directly on site without resorting to expensive electrolysis. The prototype works with a tank filled with water, ferrosilicon and sodium hydroxide.

According to pv magazine Spain.

The Spanish scientist José Antonio González Ibáñez has developed a system capable of generating and storing hydrogen from tap water, without resorting to electrolysis.

“Until today, electrolysis is the most widespread way to produce hydrogen. However, this process requires significant power consumption which makes it unattractive from an economic point of view,” he told pv-magazine.

The prototype consists of a tank filled with water, ferrosilicon and sodium hydroxide. The production of hydrogen begins with the sending of compressed air by a compressor of 20 W in the lower part of the tank.

“It’s the air that causes the reaction between the different chemical elements and generates hydrogen,” explains the scientist. Then the hydrogen escapes through the upper part of the tank and is channeled to a tank with the same pressure. The water in this second tank collects any impurities and the hydrogen comes out through the top. »

Once the hydrogen has been purified, it passes through a conduit to another tank equipped with closed contacts, a safety valve and an outlet pipe with an electromagnetic valve.

“We are currently working on developing a model with a 220-litre tank capable of operating at a pressure of 1 kg/cm² with a flow rate of 30 liters per minute,” continues José Antonio González Ibáñez. This makes it possible to produce heating, hot water and electricity for a home or a small business. »

The group is also working on the design of a larger model capable of operating at a pressure of 750 kg/cm² and which would be able to supply a thermal power plant or a container ship.

“Hydrogen is produced where it is used, which eliminates the problem of transport. All it takes is tap water, says the scientist. This system can generate energy equivalent to one liter of gasoline (that’s 30 megajoules or 8.333333 kW) for €0.0151515 ($0.0153749). »

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